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Storage CHP - Combined Heat and Power Systems for Decentralised Long Term Electricity Storage with Hydrogen
P. Grunow
Combined Heat and Power, Distributed System Operators (DSO), Hydrogen Storage, Residual Power
PV Systems and Storage – Modelling, Design, Operation and Performance
Subtopic: Storage
Event: 37th European Photovoltaic Solar Energy Conference and Exhibition
Session: 5CV.4.30
1657 - 1660
ISBN: 3-936338-73-6
Paper DOI: 10.4229/EUPVSEC20202020-5CV.4.30
0,00 EUR
Document(s): paper, poster


In this simulation study, long term storage devices on the basis of hydrogen are modelled as decentralised combined heat and power systems called here Storage CHP. This conceptual device produces either electricity or hydrogen, whereby the waste heat is used locally. Moreover, hydrogen is stored in the gas grid and converted back to electricity if needed. A grid frequency controlled switch is changing from electricity to hydrogen production for balancing the electricity grid. The proposed device acts as a cellular, scalable and self-adjusting grid component at any node of the grid. Compared to centralized power-to-gas approaches, Storage CHP provide 1. Increased energy efficiency by using waste heat locally for low temperature heat supply in buildings 2. If this service were to be paid for as a grid service, this would be an attractive investment for private owners when renewing their heating system 3. A fast market penetration and accelerated technology development as a result of the high number of potential stake-holders 4. Because of their cellular designs, the costs of fuel and electrolysis cells scale with mass production rather than system size. This device is motivated by its possibly faster market penetration compared to large scale centralised systems and was therefore probed by means of a cost optimization.