The Italian legislator has acted to guarantee a long-term supply system of new storage capacity by introducing a mechanism based on competitive, transparent and non-discriminatory auctions. The system recognises the right to an annual remuneration, in exchange for the provision of the awarded capacity as part of the national energy market.
The optimal deployed storage capacity when considering new electricity storage options is ≈250GWh and ≈40GW, corresponding to an average storage duration of ≈6 h. This research could be extended by applying it to a power sector model or considering a soft coupling with operational dispatching models.
Specifically, energy storage was found to be deployed in the analyzed electric system when assuming an investment cost reduction of 50 % to the 2013 cost levels in, while estimated the optimal storage capacity to be between 80 and 350 GWh for the European Union by 2050.
This study presented an innovative methodology for integrating short-term energy storage technologies into capacity-expansion-oriented ESOMs. The approach allows enhancing the time scale refinement of integrated ESOMs, incorporating higher granularity in time slice structure, renewable CFs, and specific demand distribution.
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