Although the contribution of renewable energy sources (RES) in the electricity mix has significantly increased, the focus has been on intermittent RETs, whereas the required system flexibility is (mainly) provided by conventional power plants. In a decarbonised power system, this flexibility would have to be provided by RES-electricity (RES-e), increasing significantly the market value of dispatchable RES. Such currently available RETs include (among others) Concentrated Solar Power (CSP) with storage, hydropower, hybrid power systems and biomass. All these technologies can provide dispatchable power, as they have some kind of energy storage, e.g. dam, battery or thermal storage.
The significant challenges that dispatchable RES-e face in high RES penetration scenarios, originate from the fact that the increased electricity system services offered by these RETs (e.g. intraday, balancing, ancillary services etc.), are not expressed in monetary terms and thus are not taken into account in their revenue streams. Therefore, market & regulatory adaptations could drive the market uptake of dispatchable RETs.
The upcoming "Energy Sources, Part B: Economics, Planning, and Policy" special issue will be devoted to the latest developments in the field of dispatchable RES-e in terms of economics, policy & planning and aims to provide valuable insights into the most effective solutions towards high RES penetration scenarios, as well as the role that policy support, market design and geopolitics can play in their further deployment.
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