Techno-economic analysis of electricity storage systems

Economic feasibility of pipe storage and underground reservoir storage options for power-to-gas load balancing

“…The electrolysis plant is run on an efficiency of around 82% and with a cell voltage of 1.8 V, converting the 5 MW of electrical power into 4.1 MW of hydrogen with an hourly volume flow of 1163 Nm 3 /h. In an additional step, the methanation plant could convert the 4.1 MW of hydrogen into 3.2 MW of renewable methane, resulting in a total conversion efficiency of 64% (for further details see [2]). In this case, the resulting hourly volume flow would be 290 Nm 3 /h.…”

“…Besides distributed generation, demand response, and new or upgraded transmission lines, energy storage is expected to foster the balancing of the power system (e.g. [1][2][3][4][5][6]). In this context, power-to-gas (P2G) is a relatively new concept which enables to transform surplus power to hydrogen by electrolysis or even to renewable methane by additional methanation (e.g.…”

Construction of a new levelled cost model for energy storage based on LCOE and learning curve

“…They will play an important role in the construction of new power systems. However, its current cost is relatively high, it cannot make up for investment and operating costs, its self-financing capability is poor, and its business model is unclear, which has a certain negative impact on the application and development of new types of energy storage such as electrochemistry [4][5][6]. Therefore, it is necessary to analyze and predict the technical and economic costs of new types of energy storage such as electrochemistry, so as to study and judge the future cost changes and provide decision-making references for relevant stakeholders of the power system.…”