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The Economics of Variable Renewable Energy and Electricity Storage

Aufsätze referiert extern - Web of Science

Javier López Prol, Wolf-Peter Schill

In: Annual Review of Resource Economics 13 (2021), S. 443-467


The transformation of the electricity sector is a central element of the transition to a decarbonized economy. Conventional generators powered by fossil fuels have to be replaced by variable renewable energy (VRE) sources in combination with electricity storage and other options for providing temporal flexibility. We discuss the market dynamics of increasing VRE penetration and its integration in the electricity system. We describe the merit-order effect (the decline of wholesale electricity prices as VRE penetration increases) and the cannibalization effect (the decline of VRE value as its penetration increases). We further review the role of electricity storage and other flexibility options for integrating variable renewables and how storage can contribute to mitigating the two mentioned effects. We also use a stylized open-source model to provide some graphical intuition on these issues. While relatively high shares of VRE are achievable with moderate amounts of electricity storage, the role of long-duration storage increases as the VRE share approaches 100%.

Wolf-Peter Schill

Head of the research area „Transformation of the Energy Economy“ in the Energy, Transportation, Environment Department

JEL-Classification: C63;Q42;Q58
Keywords: energy transition, decarbonization, variable renewable energy sources, electricity storage, merit-order effect, cannibalization effect