It shows that the introduction of optimised sizing can lead to electricity bill savings of roughly half a cent, with the H2 -Hub scenario contributing only to negligible more savings. As a result, increasing design freedom of energy storage can be desirable for a cheaper electricity system and should be considered while designing technology.
As a result, instead of improving energy storage by minimising the LCOS, one could maximise the system-value and assess the market potential indicator. Why reducing the total system cost should also be in the interest of technology developers will be discussed in Section 4.4.
As a result, increasing design freedom of energy storage can be desirable for a cheaper electricity system and should be considered while designing technology. The optimal storage design depends on location and technology.
In general, energy storage systems can provide value to the energy system by reducing its total system cost; and reducing risk for any investment and operation. This paper discusses total system cost reduction in an idealised model without considering risks.
Consequently, because storage components can be independently scaled, adaptable in operation and do not require co-location, it seems advisable to optimise them separately. The use of energy system models is subject to uncertainty as predicting the future with certainty is impossible.
In brief, with the development of power electronic devices, high-power converters and large-scale energy storage technology are becoming mature, so the application of the latter, based on the centralized configuration, is more advantageous in the grid-connected new energy power generation.