Policy & Socio-Economics

The Philippines is exploring different alternative sources of energy to make the country less dependent on imported fossil fuels and to reduce significantly the country's CO2 emissions. Given the abundance of renewable energy potential in the country green hydrogen from renewables is a promising fuel because it can be utilized as an energy carrier and can provide a source of clean and sustainable energy with no emissions. This paper aims to review the prospects and challenges for the potential use of green hydrogen in several production and utilization pathways in the Philippines. The study identified green hydrogen production routes from available renewable energy sources in the country including geothermal hydropower wind solar biomass and ocean. Opportunities for several utilization pathways include transportation industry utility and energy storage. From the analysis this study proposes a roadmap for a green hydrogen economy in the country by 2050 divided into three phases: green hydrogen as industrial feedstock green hydrogen as fuel cell technology and commercialization of green hydrogen. On the other hand the analysis identified several challenges including technical economic and social aspects as well as the corresponding policy implications for the realization of a green hydrogen economy that can be applied in the Philippines and other developing countries.

Replacing natural gas with hydrogen in an everyday setting – piping hydrogen to homes and businesses through the existing gas network – is a new and untested proposition. At the same time piloting this proposition is an essential ingredient to a well-managed low carbon transition.<br/>The Department of Business Energy and Industrial Strategy (BEIS) has commissioned CAG Consultants to undertake a literature review and conduct a set of four focus groups to inform the development of work to assess issues associated with setting up a hypothetical community hydrogen trial. This report sets out the findings from the research and presents reflections on the implications of the findings for any future community hydrogen heating trials.<br/>The literature review was a short focused review aimed at identifying evidence relevant to members of the public being asked to take part in a hypothetical community trial. Based primarily on Quick Scoping Review principles the review involved the analysis of evidence from 26 items of literature. The four focus groups were held in-person in two city locations Manchester and Birmingham in November 2019. They involved consumers who either owned or rented houses (i.e. not flats) connected to the gas grid. Two of the focus groups involved owner-occupiers one was with private landlords and the other was with a mixture of tenants (private social and student).<br/>This report was produced in October 2019 and published in December 2020. 

The study analyses the role of hydrogen in the National Energy and Climate Plans (NECPs) and identifies and highlights opportunities for hydrogen technologies to contribute to effective and efficient achievement of the 2030 climate and energy targets of the EU and its Member States.<br/>The study focuses on the potential and opportunities of renewable hydrogen produced by electrolysers using renewable electricity and of low-carbon hydrogen produced by steam methane reforming combined with CCS. The opportunities for and impacts of hydrogen deployment are assessed and summarised in individual fiches per Member State.<br/>The study analyses to what extent policy measures and industrial initiatives are already being taken to facilitate large-scale implementation of hydrogen in the current and the next decades. The study concludes by determining the CO2 reduction potential beyond what is foreseen in the NECPs through hydrogen energy technologies estimating the reduction of fossil fuel imports and reliance the prospective cost and the value added and jobs created. National teams working on decarbonisation roadmaps and updates of the NECPs are welcome to consider the opportunities and benefits of hydrogen deployment identified in this study.

Governments around the world are leveraging unprecedented amounts of capital to respond to the pandemic and bailing out struggling industries. Trends in energy-related spending indicate that despite the green push the world’s largest economies have still favoured fossil energy over clean energy.<br/><br/>We evaluate energy-related spending in Canada in 2020 (since the onset of COVID-19) using data from the Energy Policy Tracker. Trends in Canada are then compared to flagship policies in key jurisdictions with recent progressive climate policy announcements including France Germany and the United Kingdom. The brief ends with broad recommendations on how Canada can better align its recovery funding with climate action and fossil fuel subsidy reform.<br/><br/>This brief is one of three International Institute for Sustainable Development (IISD) policy briefs in its Recovery Through Reform series which assesses how efforts to achieve a green recovery from COVID-19 in Canada rely on—and can contribute to—fossil fuel subsidy reform.

Britain stands on the cusp of a world-leading hydrogen revolution and one which we are almost uniquely positioned to take advantage of. With an extensive world-leading gas grid huge amounts of offshore wind resource and liquid energy markets there are few other places as well positioned as the UK to lead the international race to build a hydrogen economy. Published as part of Energy Networks Association’s Gas Goes Green programme Britain’s Hydrogen Network Plan will play a vital role in delivering the UK’s ambitions for hydrogen as set out in the Prime Minister’s Ten Point Plan For A Green Industrial Revolution.<br/>This Plan sets out how Britain’s gas network companies will enable 100% hydrogen to be transported for use in different sectors of the UK economy. It also identifies the wider actions needed to provide hydrogen production and storage showing how transitioning the gas networks to hydrogen will allow hydrogen to play a full role in achieving net zero in the hard to decarbonise sectors such as industry heavy transport and domestic heating saving an estimated 40 million tonnes of CO2 emissions every year. All five of Britain’s gas network companies responsible for owning and operating £24bn of critical national energy infrastructure are committing through this Plan to delivering this work. It forms a key part of their ambition to building the world’s first zero carbon gas grid here in the UK.<br/>Britain’s Hydrogen Network Plan is founded on four tenets that will underpin the role of Britain’s gas network infrastructure in a hydrogen economy. These tenets reflect the breadth and scale of the impact that the transformation of our gas networks will have. They will guide how gas network companies ensure people’s safety in a fast moving and changing energy system. They reflect how the companies will maintain security of supply to our homes and businesses as we move away from the natural gas that has been the bedrock of our energy system for half a century. They will support the public’s ability to choose the right technology so households and businesses can choose the low carbon technologies that are best suited to their needs. And they will deliver jobs and investment so the transition of our gas networks has a lasting and enduring economic impact in communities across the country.<br/>As we look to the future the exciting role that hydrogen has to play in delivering a net zero economy is becoming increasingly clear. We look forward to working closely with the customers we serve the Government and the wider energy industry to turn that ambition into reality.

Shifting the fossil fuel dominated energy system to a sustainable hydrogen economy could mitigate climate change through reduction of greenhouse gas emissions. Because it is estimated that fossil fuels will remain a significant part of our energy system until mid-century bridge technologies which use fossil fuels in an environmentally cleaner way offer an opportunity to reduce the warming impact of continued fossil fuel utilization. Methane cracking is a potential bridge technology during the transition to a sustainable hydrogen economy since it produces hydrogen with zero emissions of carbon dioxide. However methane feedstock obtained from natural gas releases fugitive emissions of methane a potent greenhouse gas that may offset methane cracking benefits. In this work a model exploring the impact of methane cracking implementation in a hydrogen economy is presented and the impact on global emissions of carbon dioxide and methane is explored. The results indicate that the hydrogen economy has the potential to reduce global carbon dioxide equivalent emissions between 0 and 27% when methane leakage from natural gas is relatively low methane cracking is employed to produce hydrogen and a hydrogen fuel cell is applied. This wide range is a result of differences between the scenarios and the CH4 leakage rates used in the scenarios. On the other hand when methane leakage from natural gas is relatively high methane steam reforming is employed to produce hydrogen and an internal combustion engine is applied the hydrogen economy leads to a net increase in global carbon dioxide equivalent emissions between 19 and 27%.

This project provides evidence to identify the key innovation needs across the UK’s energy system to inform the prioritisation of public sector investment in low-carbon innovation including any future phases of the Department for Business Energy & Industrial Strategy (BEIS) Energy Innovation1 Programme. The BEIS Energy Innovation Programme aims to accelerate the commercialisation of innovative clean energy technologies and processes into the 2020s and 2030s. The current Programme with a budget of £505 million from 2015-2021 consists of six themes and invests in smart systems industry & CCS (Carbon Capture and Storage) the built environment nuclear renewables and support for energy entrepreneurs and green financing.



Vivid Economics was contracted to lead a consortium with technical expertise in each of the Energy Innovation Needs Assessment (EINA) priority areas. The programme relied on evidence from a programme of workshops with over 180 participants energy system modelling and detailed technical advice. Partners include the Carbon Trust E4tech Imperial College London and Fraser-Nash. The Energy Systems Catapult (ESC) provided analytical evidence using their Energy System Modelling Environment (ESME) to support an early pre-screening of technologies.



Innovations have been prioritised where there is a strong case for UK Government investment. The prioritisation in this report is based on evidence of the potential benefits to the UK via a lower cost energy system and larger export markets. We also consider whether there is a need for UK Government intervention in addition to private and international efforts.

 

A distinctive feature of this project is its focus on innovation that benefits the whole energy system. Internationally there are other efforts attempting to answer the question of where to target resources to maximise benefits from innovation2. In selecting priorities we identify innovations that can unlock value across electricity heat transport sectors and the rest of the economy.

The Paris Agreement has set the goal of carbon neutrality to cope with global climate change. China has pledged to achieve carbon neutrality by 2060 which will strategically change everything in our society. As the main source of carbon emissions the consumption of fossil energy is the most profoundly affected by carbon neutrality. This work presents an analysis of how China can achieve its goal of carbon neutrality based on its status of fossil energy utilization. The significance of transforming fossils from energy to resource utilization in the future is addressed while the development direction and key technologies are discussed.

The establishment of a strong hydrogen economy nationally and locally is a very real opportunity and one that is rapidly becoming within reach.<br/>This report presents a vision for the role that hydrogen could play specifically in South Yorkshire (UK) to help meet carbon reduction targets and contribute to the health and economic prosperity of the region.<br/>It also highlights five themes as levers of growth and explores potential actions and collaborations as well as a list of ambitions for future hydrogen projects. Hydrogen can be used in transport industry and heating. Synergies need exploring for example the by-product of oxygen from hydrogen production can be used by industry. Aggregating opportunities is important in developing a hydrogen economy.<br/>The report concludes with a call to action to build momentum for the South Yorkshire hydrogen economy and accelerate the drive to net zero emissions particularly in the most challenging sectors.<br/>This South Yorkshire specific report supports our global thought piece Establishing a Hydrogen Economy: The future of energy 2035

It’s the first of its kind overview showing the state of play with regards to hydrogen technologies in Europe. On an annual basis there will be an update serving as a basis for your investment or political decisions.<br/><br/>OUR MISSION IS – NO EMISSION!<br/>From day 1 Hydrogen Europe promoted clean hydrogen and clean hydrogen technologies as enablers of a decarbonised energy system. We strongly support the adoption of very ambitious climate targets for 2030 and the objective of carbon neutrality in the EU by 2050. Clean hydrogen can help to realise this transition of our energy system in multiple sectors from energy production storage and distribution to end-uses in transport industry heating and others.<br/><br/>CLEAN HYDROGEN TECHNOLOGIES CAN AND WILL REPLACE<br/>not just fossil-based hydrogen in current (industrial) uses but also other fossil-based energies such as petrol diesel and hydrocarbon fuels in the transport sector coal /coke in the steel sector natural gas in the heating sector and other polluting and emitting fuels and feedstocks. <br/><br/>WE ARE TALKING ABOUT A SYSTEMIC CHANGE.<br/>The use of clean hydrogen needs adaptations in production schemes in the infrastructure and in the deployment of hydrogen by the end users. This cannot – of course –be done in a day. Yet we should not wait for the implementation of the different hydrogen strategies on private municipal regional national or European level until other geographies worldwide race ahead.<br/><br/>

The results of a techno-economic model of distributed wind-hydrogen systems (WHS) located at each existing wind farm on the island of Ireland are presented in this paper. Hydrogen is produced by water electrolysis from wind energy and backed up by grid electricity compressed before temporarily stored then transported to the nearest injection location on the natural gas network. The model employs a novel correlation-based approach to select an optimum electrolyser capacity that generates a minimum levelised cost of hydrogen production (LCOH) for each WHS. Three scenarios of electrolyser operation are studied: (1) curtailed wind (2) available wind and (3) full capacity operations. Additionally two sets of input parameters are used: (1) current and (2) future techno-economic parameters. Additionally two electricity prices are considered: (1) low and (2) high prices. A closest facility algorithm in a geographic information system (GIS) package identifies the shortest routes from each WHS to its nearest injection point. By using current parameters results show that small wind farms are not suitable to run electrolysers under available wind operation. They must be run at full capacity to achieve sufficiently low LCOH. At full capacity the future average LCOH is 6–8 €/kg with total hydrogen production capacity of 49 kilotonnes per year or equivalent to nearly 3% of Irish natural gas consumption. This potential will increase significantly due to the projected expansion of installed wind capacity in Ireland from 5 GW in 2020 to 10 GW in 2030

Following up on our report Uncomfortable Home Truths: why Britain urgently needs a low carbon heat strategy Pipeline to 2050 sets out recommendations for BEIS’ forthcoming Heat and Buildings Strategy. Based on the findings of five roundtables held between January and July 2020 with cross-party parliamentarians policy-makers and experts from industry academia and non-governmental organisations the publication calls for a joined-up approach that simultaneously addresses all aspects of heat decarbonisation.<br/>The report highlights that today there is a patchwork of heat policy initiatives. Although they might incentivise positive development in themselves are nevertheless too dispersed and not enough to drive the level of coordinated action that is needed given the complexity of heat decarbonisation. Setting out propositions to tackle challenges associated with the transition to low carbon heat in the areas of governance funding innovation and public engagement; the publication calls for a Heat and Buildings Strategy that shows a step change in terms of ambition for heat decarbonisation.<br/>The report recommends that the Heat and Buildings Strategy needs to put forward a systematic approach that joins up all policy aspects and principles needed for the transition to low carbon heat. Moreover given the cross-sectoral engagement needed between consumers industry research and various levels of the government it argues that the Strategy has to be constructed in a way that simultaneously catalyses action from all stakeholders that are needed to take part in the process for effective heat decarbonisation.

Hydrogen produced with renewable energy sources – or “green” hydrogen – has emerged as a key element to achieve net-zero emissions from heavy industry and transport. Along with net-zero commitments by growing numbers of governments green hydrogen has started gaining momentum based on low-cost renewable electricity ongoing technological improvements and the benefits of greater power-system flexibility.



Hydrogen-based fuels previously attracted interest mainly as an alternative to shore up oil supply. However green hydrogen as opposed to the “grey” (fossil-based) or “blue” (hybrid) varieties also help to boost renewables in the energy mix and decarbonise energy-intensive industries.



This report from the International Renewable Energy Agency (IRENA) outlines the main barriers that inhibiting green hydrogen uptake and the policies needed to address these. It also offers insights on how to kickstart the green hydrogen sector as a key enabler of the energy transition at the national or regional level.



Key pillars of green hydrogen policy making include:

• National hydrogen strategy. Each country needs to define its level of ambition for hydrogen outline the amount of support required and provide a reference on hydrogen development for private investment and finance.
• Setting policy priorities. Green hydrogen can support a wide range of end-uses. Policy makers should identify and focus on applications that provide the highest value.
• Guarantees of origin. Carbon emissions should be reflected over the whole lifecycle of hydrogen. Origin schemes need to include clear labels for hydrogen and hydrogen products to increase consumer awareness and facilitate claims of incentives.
• Governance system and enabling policies. As green hydrogen becomes mainstream policies should cover its integration into the broader energy system. Civil society and industry must be involved to maximise the benefits.
• Subsequent briefs will explore the entire hydrogen value chain providing sector-by-sector guidance on the design and implementation of green hydrogen policies.

This work investigates the impacts of variation management on the cost-optimal electricity system compositions in four regions with different pre-requisites for wind and solar generation. Five variation management strategies involving electric boilers batteries hydrogen storage low-cost biomass and demand-side management are integrated into a regional investment model that is designed to account for variability. The variation management strategies are considered one at a time as well as combined in four different system contexts. By investigating how the variation management strategies interact with each other as well as with different electricity generation technologies in a large number of cases this work support policy-makers in identifying variation management portfolios relevant to their context. It is found that electric boilers demand-side management and hydrogen storage increase the cost-optimal variable renewable electricity (VRE) investments if the VRE share is sufficiently large to reduce its marginal system value. However low-cost biomass and hydrogen storage are found to increase cost-optimal investments in wind power in systems with a low initial wind power share. In systems with low solar PV share variation management reduce the cost-optimal solar PV investments. In two of the regions investigated a combination of variation management strategies results in a stronger increase in VRE capacity than the sum of the single variation management efforts.

Green hydrogen has been known in the UK since Robert Boyle described flammable air in 1671. This paper describes how green hydrogen has become a new priority for the UK in 2021 beginning to replace fossil hydrogen production exceeding 1 Mte in 2021 when the British Government started to inject significant funding into green hydrogen sources though much less than the USA Germany Japan and China. Recent progress in the UK was initiated in 2008 when the first UK green hydrogen station opened in Birmingham University refuelling 5 hydrogen fuel cell battery electric vehicles (HFCBEVs) for the 50 PhD chemical engineering students that arrived in 2009. Only 10 kg/day were required in contrast to the first large green ITM power station delivering almost 600 kg/day of green hydrogen that opened in the UK in Tyseley in July 2021. The first question asked in this paper is: ‘What do you mean Green?’. Then the Clean Air Zone (CAZ) in Birmingham is described with the key innovations defined. Progress in UK green hydrogen and fuel cell introduction is then recounted. The remarks of Elon Musk about this ‘Fool Cell; Mind bogglingly stupid’ technology are analysed to show that he is incorrect. The immediate deployment of green hydrogen stations around the UK has been planned. Another century may be needed to make green hydrogen dominant across the country yet we will be on the correct path once a profitable supply chain is established in 2022.

The falling cost of making hydrogen from wind and solar power offers a promising route to cutting emissions in some of the most fossil fuel dependent sectors of the economy such as steel heavy-duty vehicles shipping and cement.



Hydrogen Economy Outlook a new and independent global study from research firm BloombergNEF (BNEF) finds that clean hydrogen could be deployed in the decades to come to cut up to 34% of global greenhouse gas emissions from fossil fuels and industry – at a manageable cost. However this will only be possible if policies are put in place to help scale up technology and drive down costs.



The report’s findings suggest that renewable hydrogen could be produced for $0.8 to $1.6/kg in most parts of the world before 2050. This is equivalent to gas priced at $6-12/MMBtu making it competitive with current natural gas prices in Brazil China India Germany and Scandinavia on an energy-equivalent basis. When including the cost of storage and pipeline infrastructure the delivered cost of renewable hydrogen in China India and Western Europe could fall to around $2/kg ($15/MMBtu) in 2030 and $1/kg ($7.4/MMBtu) in 2050.



Kobad Bhavnagri head of industrial decarbonization for BNEF and lead author of the report said: “Hydrogen has potential to become the fuel that powers a clean economy. In the years ahead it will be possible to produce it at low cost using wind and solar power to store it underground for months and then to pipe it on-demand to power everything from ships to steel mills.”



Hydrogen is a clean-burning molecule that can be used as a substitute for coal oil and gas in a large variety of applications. But for its use to have net environmental benefits it must be produced from clean sources rather than from unabated fossil fuel processes – the usual method at present.



Renewable hydrogen can be made by splitting water into hydrogen and oxygen using electricity generated by cheap wind or solar power. The cost of the electrolyzer technology to do this has fallen by 40% in the last five years and can continue to slide if deployment increases. Clean hydrogen can also be made using fossil fuels if the carbon is captured and stored but this is likely to be more expensive the report finds.



Read the full report on the BloombergNEF website here

Policy led decisions aiming at decarbonizing the economy may well exacerbate existing regional economic imbalances. These effects are seldomly recognised in spatially aggregated top-down and techno-economic decarbonization strategies. Here we present a spatial economic framework that quantifies the gross value added associated with low carbon hydrogen investments while accounting for region-specific factors such as the industrial specialization of regions their relative size and their economic interdependencies. In our case study which uses low carbon hydrogen produced via autothermal reforming combined with carbon capture and storage to decarbonize the energy intensive industries in Europe and in the UK we demonstrate that interregional economic interdependencies drive the overall economic benefits of the decarbonization. Policies intended to concurrently transition to net zero and address existing regional imbalances as in the case of the UK Industrial Decarbonization Challenge should take these local factors into account.

This Insight provides an overview of the recent EU Commission Hydrogen Strategy Energy System Integration Strategy and Industrial Strategy focusing on regulatory issues impacting hydrogen. It looks at the proposed classification and preferences for different sources of hydrogen financial and regulatory support for development of hydrogen supply demand and infrastructure as well as potential regulation of hydrogen markets. Whilst the Hydrogen Strategy underlines the need for hydrogen to decarbonise the economy the Insight concludes that the EU has shown a clear preference for hydrogen based on renewable electricity at the expense of low carbon hydrogen from natural gas even though it recognises the need for low carbon hydrogen. In addition further detail is required on the support mechanisms and regulatory framework if development of new hydrogen value chain is to succeed. Lastly there is little sign that the Commission recognises the change in regulatory approach from the current natural gas framework which will be needed because of the different challenges facing the development of a hydrogen market.

Paper can be downloaded on their website

Australia’s Technology Investment Roadmap is a strategy to accelerate development and commercialisation of low emissions technologies.

Annual low emissions statements are key milestones of the roadmap process. These statements prioritise low emissions technologies with potential to deliver the strongest economic and emissions reduction outcomes for Australia. They focus government investment on new and emerging technologies.

In this Statement

The first Low Emissions Technology Statement presents a vision of a prosperous Australia recognised as a global low emissions technology leader

• priority technologies and economic stretch goals
• Australia’s big technology challenges and opportunities
• Technology Investment Framework
• monitoring transparency and impact evaluation

Evidence-based policy-making has been a much-debated concept. This paper builds on various insights for a novel perspective: policy-driven narrative-based evidence gathering. In a case study of UK priority setting for bioenergy innovation documents and interviews were analysed to identify links between diagnoses of the problem societal visions policy narratives and evidence gathering. This process is illuminated by the theoretical concept of sociotechnical imaginaries—technoscientific projects which the state should promote for a feasible desirable future. Results suggest that evidence has been selectively generated and gathered within a specific future vision whereby bioenergy largely provides an input-substitute within the incumbent centralised infrastructure. Such evidence is attributed to an external expertise thus helping to legitimise the policy framework. Evidence has helped to substantiate policy commitments to expand bioenergy. The dominant narrative has been reinforced by the government’s multi-stakeholder consultation favouring the incumbent industry and by incentive structures for industry co-investment.

Our new independent report finds that hydrogen can play an important role in UK’s ambitious decarbonisation plan and boost its global industrial competitiveness.

Key insights from this new analysis include:

• New independent report from Aurora Energy Research shows that hydrogen can meet up to half of Great Britain’s (GB) final energy demand by 2050 providing an important pathway to reaching UK’s ambitious Net Zero targets.
• The report concludes that both blue hydrogen (produced from natural gas after reforming to remove carbon content) and green hydrogen (produced by using power to electrolyse water) are expected to play an important role providing up to 480TWh of hydrogen or c.45% of GB’s final energy demand by 2050.
• All Net Zero scenarios require substantial growth in low-carbon generation such as renewables and nuclear. Large-scale hydrogen adoption could help to integrate renewables into the power system by reducing the power sector requirement for flexibility during peak winter months and boosting revenues for clean power generators by c. £3bn per year by 2050.
• The rollout of hydrogen could accelerate green growth and enable the development of globally competitive low-carbon industrial clusters while utilising UK’s competitive advantage on carbon capture.
• In facilitating the identification of a cost-effective hydrogen pathway there are some low-regret options for Government to explore including the stimulation of hydrogen demand in key sectors the deployment of CCS in strategic locations and the standardisation of networks. These initiatives could form an important part of the UK Government’s post-COVID stimulus plan.

Read the full report on Aurora Energy Research Website

Hydrogen Europe is the organisation representing the interests of the European hydrogen industry. It fully adheres to the European Union’s target of climate neutrality by 2050 and supports the European Commission’s objectives to develop and integrate more renewable energy sources into the European energy mix.<br/><br/>In December 2015 in Paris a global climate agreement was reached at the UN Climate Change Conference (COP 21). The Paris Agreement is seen as a historic and landmark instrument in climate action. However the agreement is lacking emphasis on international maritime transport and the role that this sector will need to play in contributing to the decarbonisation of the global economy and in striving for a clean planet for all.<br/><br/>Hydrogen hydrogen-based fuels (such as ammonia) and hydrogen technologies offer tremendous potential for the maritime sector<br/>and if properly harnessed can significantly contribute to the decarbonisation and also mitigate the air pollution of the worldwide fleet. Hydrogen Europe will be the catalyst in this process the decarbonisation and also mitigate the air pollution of the worldwide fleet. Hydrogen Europe will be the catalyst in this process.<br/><br/>The pathway towards hydrogen and hydrogenbased fuels for the maritime sector does not come without technological and commercial challenges let alone regulatory barriers.

A new assessment tool for evaluating decarbonization technologies that considers each technology’s sustainability security affordability readiness and impact for a specific country is proposed. This tool is applied to a set of decarbonization technologies for the power transport and industry sectors for the ten Southeast Asian countries that constitute ASEAN. This results in a list of the most promising decarbonization technologies as well as the remaining issues that need more research and development. This study reveals several common themes for ASEAN’s decarbonization. First carbon capture and storage (CCS) is a key technology for large-scale CO2 emission. Second for countries that rely heavily on coal for power generation switching to gas can halve their CO2 emission in the power sector and should be given high priority. Third hydropower and bioenergy both have high potential for the majority of ASEAN countries if their sustainability issues can be resolved satisfactorily. Fourth replacing conventional vehicles by electric vehicles is the overarching theme in the road transport sector but will result in increased demand for electricity. In the medium to long term the use of hydrogen for marine fuel and biofuels for aviation fuel are preferred solutions for the marine and aviation transport sectors. Fifth for the industry sector installing CCS in industrial plants should be given priority but replacing fossil fuels by blue hydrogen for high-temperature heating is the preferred long-term solution.

Deloitte was commissioned by the National Hydrogen Taskforce established by the COAG Energy Council to undertake an Australian and Global Growth Scenario Analysis. Deloitte analysed the current global hydrogen industry its development and growth potential and how Australia can position itself to best capitalise on the newly forming industry.



To conceptualise the possibilities for Australia Deloitte created scenarios to model the realm of possibilities for Australia out to 2050 focusing on identifying the scope and distribution of economic and environmental costs and benefits from Australian hydrogen industry development. This work will aid in analysing the opportunities and challenges to hydrogen industry development in Australia and the actions needed to overcome barriers to industry growth manage risks and best drive industry development.



The full report is available on the Deloitte website at this link

Hydrogen presents an attractive option to decarbonise the present energy system. Hydrogen can extend the usage of the existing gas infrastructure with low-cost energy storability and flexibility. Excess electricity generated by renewables can be converted into hydrogen. In this paper a novel multi-energy systems optimisation model was proposed to maximise investment and operating synergy in the electricity heating and transport sectors considering the integration of a hydrogen system to minimise the overall costs. The model considers two hydrogen production processes: (i) gas-to-gas (G2G) with carbon capture and storage (CCS) and (ii) power-to-gas (P2G). The proposed model was applied in a future Great Britain (GB) system. Through a comparison with the system without hydrogen the results showed that the G2G process could reduce £3.9 bn/year and that the P2G process could bring £2.1 bn/year in cost-savings under a 30 Mt carbon target. The results also demonstrate the system implications of the two hydrogen production processes on the investment and operation of other energy sectors. The G2G process can reduce the total power generation capacity from 71 GW to 53 GW and the P2G process can promote the integration of wind power from 83 GW to 130 GW under a 30 Mt carbon target. The results also demonstrate the changes in the heating strategies driven by the different hydrogen production processes.

As nations around the world seek to reduce carbon dioxide emissions in order to mitigate climate change risks there has been a resurgence of interest in the use of hydrogen as a zero-emissions energy carrier. Hydrogen can be produced from diverse feedstocks via a range of low-emissions pathways and has broad potential in the process of decarbonization across the energy transport and industrial sectors.<br/>With an abundance of both renewable and fossil fuel energy resources a comparatively low national energy demand and excellent existing regional resource trading links Australia is well positioned to pursue industrial-scale hydrogen production for both domestic and export purposes. In this paper we present an overview of the progress at the government industry and research levels currently undertaken to enable a large-scale hydrogen industry for Australia.

The transition to net-zero emission energy systems creates synergistic opportunities across sectors. For example fuel hydrogen production from water electrolysis generates by-product oxygen that could be used to reduce the cost of carbon capture and storage (CCS) essential in the decarbonization of clinker production in cement making. To assess this opportunity a techno-economic assessment was carried out for the production of clinker using oxy-combustion in a natural gas-fueled plant coupled to CCS. Material and energy flows were assessed in a reference case for clinker production (oxygen from air no CCS) and compared to oxy-combustion clinker production from either an air separation unit (ASU 95% O2) or water electrolysis (100% O2) both coupled to CCS. Compared to the reference air-combusted clinker plant oxy-combustion increases thermal energy demand by 7% and electricity demand by 137% for ASU and 67% for electrolytic oxygen. The levelized cost of oxygen supply ranges from $49/tO2 for an on-site ASU to pipelined electrolytic O2 at $35/tO2 (200 km) or $13/t O2 (20 km). The cost of clinker for the reference plant without CCS increases linearly from $84/t clinker to $193/t clinker at a carbon price of $0/tCO2 to $150/tCO2 respectively. With oxy-combustion and CCS the clinker production cost ranges from $119 to $122/t clinker reflecting a breakeven carbon price of $39 to $53/tCO2 compared to the reference case. The lower cost for the electrolytic supply of by-product oxygen compared to ASU oxygen must be balanced against the reliability of supply the pipeline transport distance and the charges that may be added by the hydrogen producer.

Hydrogen is crucial to Europe’s transformation into a climate-neutral continent by mid-century. This study concludes that the European Union (EU) and UK could see a hydrogen demand of 2300 TWh (2150-2750 TWh) by 2050. This corresponds to 20-25% of EU and UK final energy consumption by 2050. Achieving this future role of hydrogen depends on many factors including market frameworks legislation technology readiness and consumer choice.

The document can be download on their website

In its new report Making the Hydrogen Economy Possible: Accelerating clean hydrogen in an electrified economy the ETC outlines the role of clean hydrogen in achieving a highly electrified net-zero economy. The report sets out how a combination of private-sector collaboration and policy support can drive the initial ramp up of clean hydrogen production and use to reach 50 million tonnes by 2030.<br/>Clean hydrogen will play a complementary role to decarbonise sectors where direct electrification is likely to be technologically very challenging or prohibitively expensive such as in steel production and long-distance shipping. The report highlights how critical rapid ramp-up of production and use in the 2020s is to unlock cost reductions and to make mid-century growth targets achievable.<br/>This report is part of the ETC’s wider Making Mission Possible Series – a series of reports outlining how to scale up clean energy provision within the next 30 years to meet the needs of a net-zero greenhouse gas emissions (GHG) economy by mid-century. The reports in the series analyse and set out specific actions required in the next decade to put this net-zero by 2050 target within reach.

Offshore oil and gas field development consumes quantities of electricity which is usually provided by gas turbines. In order to alleviate the emission reduction pressure and the increasing pressure of energy saving governments of the world have been promoting the reform of oil and gas fields for years. Nowadays environmentally friendly alternatives to provide electricity are hotspots such as the integration of traditional energy and renewable energy. However the determination of system with great environmental and economic benefits is still controversial. This paper proposed a wind– hydrogen–natural gas nexus (WHNGN) system for sustainable offshore oil and gas fields development. Combining the optimization model with the techno-economic evaluation model a comprehensive evaluation framework is established for techno-economic feasibility analysis. In addition to WHNGN system another two systems are designed for comparison including the traditional energy supply (TES) system and wind–natural gas nexus (WNGN) system. An offshore production platforms in Bohai Bay in China is taken as a case and the results indicate that: (i) WNGN and WHNGN systems have significant economic benefits total investment is decreased by 5190 and 5020 million $ respectively and the WHNGN system increases 4174 million $ profit; (ii) WNGN and WHNGN systems have significant environmental benefits annual carbon emission is decreased by 15 and 40.2 million kg respectively; (iii) the system can be ranked by economic benefits as follows: WHNGN >WNGN > TES; and (iV) the WHNGN system is more advantageous in areas with high hydrogen and natural gas sales prices such as China Kazakhstan Turkey India Malaysia and Indonesia.

One of the options to reduce the dependence on fossil fuels is to produce gas with the quality of natural gas but based on renewable energy sources. It can encompass among other biogas generation from various types of biomass and its subsequent upgrading. The main aim of this study is to analyze under a combined technical economic and environmental perspective three of the most representative technologies for the production of biomethane (bio-based natural gas): (i) manure fermentation and its subsequent upgrading by CO₂ removal (ii) manure fermentation and biogas methanation using renewable hydrogen from electrolysis and (iii) biomass gasification in the atmosphere of oxygen and methanation of the resulted gas. Thermodynamic economic and environmental analyses are conducted to thoroughly compare the three cases. For these purposes detailed models in Aspen Plus software were built while environmental analysis was performed using the Life Cycle Assessment methodology. The results show that the highest efficiency (66.80%) and the lowest break-even price of biomethane (19.2 €/GJ) are reached for the technology involving fermentation and CO₂ capture. Concerning environmental assessment the system with the best environmental performance varies depending on the impact category analyzed being the system with biomass gasification and methanation a suitable trade-off solution for biomethane production.

In recent years the development of energy prices in Germany has been frequently accompanied by criticism and warnings of socio-economic disruptions. Especially with respect to the electricity sector the debate on increasing energy bills was strongly correlated with the energy system transition. However whereas fossil fuels have rapidly increased in price recently renewable substitutes such as green hydrogen and synthetic fuels also enter the markets at comparatively high prices. On the other hand the present fossil fuel supply is still considered too low-priced by experts because societal greenhouse gas-induced environmental impact costs are not yet compensated. In this study we investigate the development of the price gap between conventional energy carriers and their renewable substitutes until 2050 as well as a suitable benchmark price incorporating the societal costs of specific energy carriers. The calculated benchmark prices for natural gas (6.3 ct kWh−1 ) petrol (9.9 ct kWh−1 ) and grey hydrogen from steam methane reformation (12 ct kWh−1 ) are nearly 300% above the actual prices for industry customers in 2020 but below the price peaks of early 2022. In addition the price gap between conventional fuels and green hydrogen will be completely closed before 2050 for all investigated energy carriers. Furthermore prognosed future price developments can be considered rather moderate compared to historic and especially to the recent price dynamics in real terms. A gradual implementation of green hydrogen and synthetic fuels next to increasing CO2 prices however may temporarily lead to further increasing expenses for energy but can achieve lower price levels comparable to those of 2020 in the long term.

UK homes are primarily heated by fossil fuels and contribute 13% of UK’s carbon footprint (equivalent to all the UK’s 38.4m cars). The report says this is incompatible with UK climate legislation targeting net-zero economy by 2050. New polling finds that consumers are open to cleaner greener ways to heat their homes into the future but that they are “still in the dark about smarter greener heating solutions and lack access to independent advice to help them make better decisions for their homes pockets and the planet”.<br/><br/>The report – Uncomfortable Home Truths: why Britain urgently needs a low carbon heat strategy – says a bold new national roadmap is needed by 2020 which puts consumers and households at the heart of a revolution in green heat innovation. It recommends the creation of an Olympic-style delivery body to catalyse and coordinate regional innovation and local leadership tailored to different parts of the UK and the nation’s diverse housing stock.<br/><br/>This report is the third in the Future Gas Series which has explored the opportunities and challenges associated with using low carbon gas in the energy system and is backed by cross-party parliamentary co-Chairs

The unbridled use of fossil fuels is a serious problem that has become increasingly evident over the years. As such fuels contribute considerably to environmental pollution there is a need to find new sustainable sources of energy with low emissions of greenhouse gases. Climate change poses a substantial challenge for the scientific community. Thus the use of renewable energy through technologies that offer maximum efficiency with minimal pollution and carbon emissions has become a major goal. Technology related to the use of hydrogen as a fuel is one of the most promising solutions for future systems of clean energy. The aim of the present review was to provide an overview of elements related to the potential use of hydrogen as an alternative energy source considering its specific chemical and physical characteristics as well as prospects for an increase in the participation of hydrogen fuel in the world energy matrix.

From an evaluation of the GB housing stock it is clear that a mosaic of low carbon heating technologies will be needed to reach net zero. While heat pumps are an important component of this mix our analysis shows that it is likely to be impractical to heat many GB homes with heat pumps only. A combination of lack of exterior space and/or the thermal properties of the building fabric mean that a heat pump is not capable of meeting the space heating requirement of 8 to 12m homes (or 37% to 54% of the 22.7m homes assessed in this report) or can do so only through the installation of highly disruptive and intrusive measures such as solid wall insulation. Hybrid heat pumps that are designed to optimise efficiency of the system do not have the same requirements of a heat pump and may be a suitable solution for some of these homes. This is likely to mean that decarbonised gas networks are therefore critical to delivery of net zero. 3 to 4m homes1 (or 14% to 18% of homes assessed in our analysis) could be made suitable for heat pump retrofit through energy efficiency measures such as cavity wall insulation. For 7 to 10m homes there are no limiting factors and they require minimal/no upgrade requirements to be made heat pump-ready. Nevertheless given firstly the levels of disruption to the floors and interiors of homes caused by the installation of heat pumps and secondly the cost and disruption associated with the requirement to significantly upgrade the electricity distribution networks to cope with large numbers of heat pumps operating at peak demand times - combined with the availability of a decarbonised gas network which requires a simple like-for-like boiler replacement - is likely to mean that many of these ‘swing’ properties will be better served through a gas based technology such as hydrogen (particularly when consumer choice is factored in) or a hybrid system. A recent trial run in winter 2018-19 by the Energy System Catapult revealed that all participants were reluctant to make expensive investments to improve the energy efficiency of their homes just to enhance the performance of their heat pump. They were more interested in less costly upgrades and tangible benefits such as lower bills or greater comfort. This means that renewable gases including hydrogen as heating fuels are a crucial component of the journey to net zero and the UK’s hydrogen ambitions should be reflective of this. The analysis presented in this paper focuses on the external fabric of the buildings further analysis should be undertaken to consider the internal system changes that would be required for heat pumps and hydrogen boilers for example BEIS Domestic Heat Distribution Systems: Gathering Report from February 2021 which considers the suitability of radiators for the low carbon transition.

This statutory report provides a comprehensive overview of the UK Government’s progress to date in reducing emissions. It is accompanied by a new Monitoring Framework which details the CCC’s updated approach to tracking real-world progress through a host of new indicators.<br/>This is a pivotal point in the UK’s journey to Net Zero. The UK is one of the few countries with emissions targets in line with the long-term temperature goal of the Paris Agreement. Policy ambition has moved substantially with the publication of the UK’s Net Zero Strategy. Now is the time to deliver the promised action.

In this paper we report the effect of adding Zr + V or Zr + V + Mn to TiFe alloy on microstructure and hydrogen storage properties. The addition of only V was not enough to produce a minimum amount of secondary phase and therefore the first hydrogenation at room temperature under a hydrogen pressure of 20 bars was impossible. When 2 wt.% Zr + 2 wt.% V or 2 wt.% Zr + 2 wt.% V + 2 wt.% Mn is added to TiFe the alloy shows a finely distributed Ti₂Fe-like secondary phase. These alloys presented a fast first hydrogenation and a high capacity. The rate-limiting step was found to be 3D growth diffusion controlled with decreasing interface velocity. This is consistent with the hypothesis that the fast reaction is likely to be the presence of Ti₂Fe-like secondary phases that act as a gateway for hydrogen.

This study aimed to identify the impact of achieving the 1.5 ◦C target on the petroleum supply chain in Japan and discuss the feasibility and challenges of decarbonization. First a national material flow was established for the petroleum supply chain in Japan including processes for crude petroleum refining petroleum product manufacturing plastic resin and product manufacturing and by-product manufacturing. In particular by-product manufacturing processes such as hydrogen gaseous carbon dioxide and sulfur were selected because they are utilized in other industries. Next the outlook for the production of plastic resin hydrogen dry ice produced from carbon dioxide gas and sulfur until 2050 was estimated for reducing petroleum consumption required to achieve the 1.5 ◦C target. As a result national petroleum treatment is expected to reduce from 177048.00 thousand kl in 2019 to 126643.00 thousand kl in 2030 if the reduction in petroleum consumption is established. Along with this decrease plastic resin production is expected to decrease from 10500.00 thousand ton in 2019 to 7511.00 thousand ton by 2030. Conversely the plastic market is expected to grow steadily and the estimated plastic resin production in 2030 is expected to be 20079.00 thousand ton. This result indicates that there is a large output gap between plastic supply and demand. To mitigate this gap strongly promoting the recycling of waste plastics and making the price competitiveness of biomass plastics equal to that of petroleum-derived plastics are necessary

This paper aims to review existing energy-sector and hydrogen-energy-related legal policy and strategy documents in the ECOWAS region. To achieve this aim current renewable-energyrelated laws acts of parliament executive orders presidential decrees administrative orders and memoranda were analyzed. The study shows that ECOWAS countries have strived to design consistent legal instruments regarding renewable energy in developing comprehensive legislation and bylaws to consolidate it and to encourage investments in renewable energy. Despite all these countries having a legislative basis for regulating renewable energy there are still weaknesses that revolve around the law and policy regarding its possible application in green hydrogen production and use. The central conclusion of this review paper is that ECOWAS member states presently have no official hydrogen policies nor bylaws in place. The hydrogen rise presents a challenge and opportunity for members to play an important role in the fast-growing global hydrogen market. Therefore these countries need to reform their regulatory frameworks and align their policies by introducing green hydrogen production in order to accomplish their green economy transition for the future and to boost the continent’s sustainable development.

As environmental awareness among the public gradually improves it is predicted that the trend of green consumption will make green products enter the mainstream market. Hydrogen-electric motorcycles with eco-friendly and energy-efficient characteristics have great advantages for development. However as a type of innovative product hydrogen-electric motorcycles require further examination with regard to consumer acceptance and external variables of the products. In this study consumer behavioral intention (BI) for the use of hydrogen-electric motorcycles and its influencing factors are discussed using innovation resistance as the basis and environmental concern as the adjusting variable. Consumers’ willingness-to-pay (WTP) for hydrogen-electric motorcycles is estimated using the contingent valuation method (CVM). The results found that (1) perception barriers viz. usage barrier value barrier risk barrier tradition barrier and price barrier are statistically significant whereas image barrier is not; (2) a high degree of environmental concern will reduce the consumers’ innovation resistance to the hydrogen-electric motorcycles; (3) up to 94.79% of the respondents of the designed questionnaire suggested that the promotion of hydrogen-electric motorcycles requires a subsidy of 21.9% of the total price from the government. The mean WTP of consumers for the purchase of hydrogen-electric motorcycles is 10–15% higher than that of traditional motorcycles.

In this study we investigated the cost-effectiveness of four alternatives: Liquified Natural Gas (LNG) methanol green hydrogen and green ammonia for the case of top 20 most frequently calling ships to Irish ports in 2019 through the Net Present Value (NPV) methodology incorporating the benefits incurred through saved external carbon tax and conventional fuel costs. LNG had the highest NPV (€6166 million) followed by methanol (€1705 million) and green hydrogen (€319 million). Green ammonia utilisation (as a hydrogen carrier) looks inviable due to higher operational costs resulting from its excessive consumption (i.e. losses) during the cracking and purifying processes and its lower net calorific value. Green hydrogen remains the best option to meet future decarbonisation targets although a further reduction in its current fuel price (by 60%) or a significant increment in the proposed carbon tax rate (by 275%) will be required to improve its cost-competitiveness over LNG and methanol.

Countries are under increasing pressure to reduce greenhouse gas emissions as an act upon the Paris Agreement. The essential emission reductions can be achieved by environmentally friendly solutions in particular the introduction of low carbon or carbon-free fuels. This study presents a comparative life cycle assessment of various energy carriers namely; liquefied natural gas methanol dimethyl ether liquid hydrogen and liquid ammonia that are produced from natural gas or renewables to investigate greenhouse gas emissions generated from the complete life cycle of energy carriers accounting for the leaks as well as boil-off gas occurring during storage and transportation. The entire fuel life cycle is considered consisting of production storage transportation via an ocean tanker to different distances and finally utilization in an internal combustion engine of a road vehicle. The results show that using natural gas as a feedstock total greenhouse gas emissions during production ocean transportation (over 20000 nmi) by a heavy fuel oil-fueled ocean tanker and utilization in an internal combustion engine are 73.96 95.73 93.76 50.83 and 100.54 g CO2 eq. MJ1 for liquified natural gas methanol dimethyl ether liquid hydrogen and liquid ammonia respectively. Liquid hydrogen produced from solar electrolysis is the cleanest energy carrier (42.50 g CO2 eq. MJ1 fuel). Moreover when liquid ammonia is produced via photovoltaic-based electrolysis (60.76 g CO2 eq. MJ1 fuel) it becomes cleaner than liquified natural gas. Although producing methanol and dimethyl ether from biomass results in a large reduction in total greenhouse gas emissions compared to conventional methanol and dimethyl ether production with a value of 73.96 g CO2 eq. per MJ liquified natural gas still represents a cleaner option than methanol and dimethyl ether considering the full life cycle.

A 10-minute tour of hydrogen industry technology and terminology for those who are new to the sector or who would simply like a quick review of the basics behind this burgeoning energy source.

Podcast can be found on their website

The clean hydrogen in the prioritized value chain platform could provide energy incentives and reduce environmental impacts. In the current study strengths weaknesses opportunities and threats (SWOT) analysis has been successfully applied to the clean hydrogen value chain in different sectors to determine Japan’s clean hydrogen value chain’s strengths weaknesses opportunities and threats as a case study. Japan was chosen as a case study since we believe that it is the only pioneer country in that chain with a national strategy investments and current projects which make it unique in this way. The analyses include evaluations of clean energy development power supply chains regional energy planning and renewable energy development including the internal and external elements that may influence the growth of the hydrogen economy in Japan. The ability of Japan to produce and use large quantities of clean hydrogen at a price that is competitive with fossil fuels is critical to the country’s future success. The implementation of an efficient carbon tax and carbon pricing is also necessary for cost parity. There will be an increasing demand for global policy coordination and inter-industry cooperation. The results obtained from this research will be a suitable model for other countries to be aware of the strengths weaknesses opportunities and threats in this field in order to make proper decisions according to their infrastructures potentials economies and socio-political states in that field.

In June 2021 the United States (US) Department of Energy (DOE) hosted the first-ever Hydrogen Shot Summit which lasted for two days. More than 3000 stockholders around the world were convened at the summit to discuss how low-cost clean hydrogen production would be a huge step towards solving climate change. Hydrogen is a dynamic fuel that can be used across all industrial sectors to lower the carbon intensity. By 2030 the summit hopes to have developed a means to reduce the current cost of clean hydrogen by 80%; i.e. to USD 1 per kilogram. Because of the importance of clean hydrogen towards carbon neutrality the overall DOE budget for Fiscal Year 2021 is USD 35.4 billion and the total budget for DOE hydrogen activities in Fiscal Year 2021 is USD 285 million representing 0.81% of the total DOE budget for 2021. The DOE hydrogen budget of 2021 is estimated to increase to USD 400 million in Fiscal Year 2022. The global hydrogen market is growing and the US is playing an active role in ensuring its growth. Depending on the electricity source used the electrolysis of hydrogen can have no greenhouse gas emissions. When assessing the advantages and economic viability of hydrogen production by electrolysis it is important to take into account the source of the necessary electricity as well as emissions resulting from electricity generation. In this study to evaluate the levelized cost of nuclear hydrogen production the International Atomic Energy Agency Hydrogen Economic Evaluation Program is used to model four types of LWRs: Exelon’s Nine Mile Point Nuclear Power Plant (NPP) in New York; Palo Verde NPP in Arizona; Davis-Besse NPP in Ohio; and Prairie Island NPP in Minnesota. Each of these LWRs has a different method of hydrogen production. The results show that the total cost of hydrogen production for Exelon’s Nine Mile Point NPP Palo Verde NPP Davis-Besse NPP and Prairie Island NPP was 4.85 ± 0.66 4.77 ± 1.36 3.09 ± 1.19 and 0.69 ± 0.03 USD/kg respectively. These findings show that among the nuclear reactors the cost of nuclear hydrogen production using Exelon’s Nine Mile Point NPP reactor is the highest whereas the cost of nuclear hydrogen production using the Prairie Island NPP reactor is the lowest.

The transition of residential communities to renewable energy sources is one of the first steps for the decarbonization of the energy sector the reduction of CO2 emissions and the mitigation of global climate change. This study provides information for the development of a microgrid supplied by wind and solar energy which meets the hourly energy demand of a community of 10000 houses in the North Texas region; hydrogen is used as the energy storage medium. The results are presented for two cases: (a) when the renewable energy sources supply only the electricity demand of the community and (b) when these sources provide the electricity as well as the heating needs (for space heating and hot water) of the community. The results show that such a community can be decarbonized with combinations of wind and solar installations. The energy storage requirements are between 2.7 m3 per household and 2.2 m3 per household. There is significant dissipation in the storage–regeneration processes—close to 30% of the current annual electricity demand. The entire decarbonization (electricity and heat) of this community will result in approximately 87500 tons of CO2 emissions avoidance.

This study is aimed at a succinct review of practical impacts of grid integration of renewable energy systems on effectiveness of power networks as well as often employed state-of-the-art solution strategies. The renewable energy resources focused on include solar energy wind energy biomass energy and geothermal energy as well as renewable hydrogen/fuel cells which although not classified purely as renewable resources are a famous energy carrier vital for future energy sustainability. Although several world energy outlooks have suggested that the renewable resources available worldwide are sufficient to satisfy global energy needs in multiples of thousands the different challenges often associated with practical exploitation have made this assertion an illusion to date. Thus more research efforts are required to synthesize the nature of these challenges as well as viable solution strategies hence the need for this review study. First brief overviews are provided for each of the studied renewable energy sources. Next challenges and solution strategies associated with each of them at generation phase are discussed with reference to power grid integration. Thereafter challenges and common solution strategies at the grid/electrical interface are discussed for each of the renewable resources. Finally expert opinions are provided comprising a number of aphorisms deducible from the review study which reveal knowledge gaps in the field and potential roadmap for future research. In particular these opinions include the essential roles that renewable hydrogen will play in future energy systems; the need for multi-sectoral coupling specifically by promoting electric vehicle usage and integration with renewable-based power grids; the need for cheaper energy storage devices attainable possibly by using abandoned electric vehicle batteries for electrical storage and by further development of advanced thermal energy storage systems (overviews of state-of-the-art thermal and electrochemical energy storage are also provided); amongst others.

Existing studies of financing efficiency concentrate on capital structure and a single external environment or internal management characteristic. Few of the studies include the internal and external financing environments at the same time for hydrogen energy industry financing efficiency. This paper used the data envelopment analysis (DEA) model and the Malmquist index to measure the financing efficiency of 70 hydrogen energy listed enterprises in China from 2014 to 2020 from both static and dynamic perspectives. Then a tobit model was constructed to explore the influence of external environment and internal factors on the financing efficiency. The contributions of this paper are studying the internal and external financing environments and integrating financing cost efficiency and capital allocation efficiency into the financing efficiency of hydrogen energy enterprises. The results show that firstly the financing efficiency of China’s hydrogen energy listed enterprises showed an upward trend during the years 2014–2020. Secondly China’s hydrogen energy enterprises mainly gather in the eastern coastal areas and their financing efficiency is more than that in western areas. Thirdly the regional economic development level enterprise scale financing structure capital utilization efficiency and profitability have significant effects on the financing efficiency. These results can promote the achievement of “carbon neutrality” in China.

To accelerate clean energy transition China has explored the potential of hydrogen as an energy carrier since 2001. Until 2020 49 national hydrogen policies were enacted. This paper explores the relevance of these policies to the development of the hydrogen industry and energy transition in China. We examine the reasons impacts and challenges of Chinese national hydrogen policies through the conceptual framework of Thomas Dye’s policy analysis method and the European Training Foundation’s policy analysis guide. This research provides an ex‐post analysis for previous policies and an ex‐ante analysis for future options. We argue that the energy supply revolution and energy technology revolution highlight the importance of hydrogen development in China. Particularly the pressure of the automobile industry transition leads to experimentation concerning the application of hydrogen in the transportation sector. This paper also reveals that hydro‐ gen policy development coincides with an increase in resource input and has positive spill over effects. Furthermore we note that two challenges have impeded progress: a lack of regulations for the industry threshold and holistic planning. To address these challenges the Chinese government can design a national hydrogen roadmap and work closely with other countries through the Belt and Road Initiative.

In recent years the need to reduce environmental impacts and increase flexibility in the energy sector has led to increased penetration of renewable energy sources and the shift from concentrated to decentralized generation. A fuel cell is an instrument that produces electricity by chemical reaction. Fuel cells are a promising technology for ultimate energy conversion and energy generation. We see that this system is integrated where we find that the wind and photovoltaic energy system is complementary between them because not all days are sunny windy or night so we see that this system has higher reliability to provide continuous generation. At low load hours PV and electrolysis units produce extra power. After being compressed hydrogen is stored in tanks. The purpose of this study is to separate the Bahr AL-Najaf Area from the main power grid and make it an independent network by itself. The PEM fuel cells were analyzed and designed and it were found that one layer is equal to 570.96 Watt at 0.61 volts and 1.04 A/Cm2 . The number of layers in one stack is designed to be equal to 13 layers so that the total power of one stack is equal to 7422.48 Watt. That is the number of stacks required to generate the required energy from the fuel cells is equal to 203 stk. This study provided an analysis of the hybrid system to cover the electricity demand in the Bahr AL-Najaf region of 1.5 MW the attained hybrid power system TNPC cost was about 9573208 USD whereas the capital cost and energy cost (COE) were about 7750000 USD and 0.169 USD/kWh respectively for one year.