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Linking renewables and fossil fuels with carbon capture via energy storage for a sustainable energy future

Dawid P. Hanak, Vasilije Manovic

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3, Pages 453-459 doi: 10.1007/s11705-019-1892-2

Abstract: Renewable energy sources and low-carbon power generation systems with carbon capture and storage (CCS) are expected to be key contributors towards the decarbonisation of the energy sector and to ensure sustainable energy supply in the future. However, the variable nature of wind and solar power generation systems may affect the operation of the electricity system grid. Deployment of energy storage is expected to increase grid stability and renewable energy utilisation. The power sector of the future, therefore, needs to seek a synergy between renewable energy sources and low-carbon fossil fuel power generation. This can be achieved via wide deployment of CCS linked with energy storage. Interestingly, recent progress in both the CCS and energy storage fields reveals that technologies such as calcium looping are technically viable and promising options in both cases. Novel integrated systems can be achieved by integrating these applications into CCS with inherent energy storage capacity, as well as linking other CCS technologies with renewable energy sources via energy storage technologies, which will maximise the profit from electricity production, mitigate efficiency and economic penalties related to CCS, and improve renewable energy utilisation.

Keywords： carbon capture energy storage renewable energy sources decarbonisation fossil fuels

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Lessons from market reform for renewable integration in the European Union

Furong LI

Frontiers in Energy 2018, Volume 12, Issue 4, Pages 623-629 doi: 10.1007/s11708-018-0575-x

Abstract:

The European Union (EU) has the most advanced, mature, and liberal energy markets that gave rise to the most dramatic drop in wholesale energy prices, whose fallen, however, has not been translated into a reduction in retail energy prices. Instead, energy prices in Europe rose above inflation year-in-year-out, and are considerably higher compared with major economic partners. This paper highlights the key limitations in the EU market designs and network access toward renewable integration, and the wide range of reforms that the EU is currently undertaken across the Member States to achieve two goals: to make the market fit for renewable, and to set a practical example of how a competitive economy can be built on a sustainable and affordable energy system. This paper concludes with key recommendations to developing nations, particularly in addressing heavy renewable curtailment.

Keywords： wholesale energy market retail energy market market for renewables

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A Grid as Smart as the Internet Article

Yanli Liu, Yixin Yu, Ning Gao, Felix Wu

Engineering 2020, Volume 6, Issue 7, Pages 778-788 doi: 10.1016/j.eng.2019.11.015

Abstract: A grid as smart as the internet is needed to harness the full potential of renewables, accommodate technology

Keywords： Distributed intelligence Electric grid Internet Renewables

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A Review of Technical Advances, Barriers, and Solutions in the Power to Hydrogen (P2H) Roadmap Review

Guoping Hu, Chao Chen, Hiep Thuan Lu, Yue Wu, Congmin Liu, Lefu Tao, Yuhan Men, Guangli He, Kevin Gang Li

Engineering 2020, Volume 6, Issue 12, Pages 1364-1380 doi: 10.1016/j.eng.2020.04.016

Abstract:

Power to hydrogen (P2H) provides a promising solution to the geographic mismatch between sources of renewable energy and the market, due to its technological maturity, flexibility, and the availability of technical and economic data from a range of active demonstration projects. In this review, we aim to provide an overview of the status of P2H, analyze its technical barriers and solutions, and propose potential opportunities for future research and industrial demonstrations. We specifically focus on the transport of hydrogen via natural gas pipeline networks and end-user purification. Strong evidence shows that an addition of about 10% hydrogen into natural gas pipelines has negligible effects on the pipelines and utilization appliances, and may therefore extend the asset value of the pipelines after natural gas is depleted. To obtain pure hydrogen from hydrogen-enriched natural gas (HENG) mixtures, end-user separation is inevitable, and can be achieved through membranes, adsorption, and other promising separation technologies. However, novel materials with high selectivity and capacity will be the key to the development of industrial processes, and an integrated membrane-adsorption process may be considered in order to produce high-purity hydrogen from HENG. It is also worth investigating the feasibility of electrochemical separation (hydrogen pumping) at a large scale and its energy analysis. Cryogenics may only be feasible when liquefied natural gas (LNG) is one of the major products. A range of other technological and operational barriers and opportunities, such as water availability, byproduct (oxygen) utilization, and environmental impacts, are also discussed. This review will advance readers’ understanding of P2H and foster the development of the hydrogen economy.

Keywords： Power to hydrogen Renewables Hydrogen Energy