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Journal Article

The Impact of Carbon Prices on Renewable Energy Support

Authors

Abrell,  Jan
External Organizations;

/persons/resource/mirjam.kosch

Kosch,  Mirjam
Potsdam Institute for Climate Impact Research;

External Ressource

https://doi.org/10.7910/DVN/V9ZLIT
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Citation

Abrell, J., Kosch, M. (2022): The Impact of Carbon Prices on Renewable Energy Support. - Journal of the Association of Environmental and Resource Economists, 9, 3, 531-563.
https://doi.org/10.1086/717417


Cite as: https://publications.pik-potsdam.de/pubman/item/item_27836
Abstract
We examine how optimal renewable energy (RE) support policies need to be adjusted to account for carbon prices. We show theoretically and empirically that changing carbon prices requires adjusting RE subsidies due to two motives. First, RE premiums need to be reduced to reflect the carbon value embedded in the market price. Second, once a coal to gas switch occurs, RE premiums and feed-in tariffs need to be adjusted to account for changes in the marginal external benefit of RE. We use empirical estimations and numerical simulation models to quantify these effects for the United Kingdom. We show that the second effect is empirically small, whereas the first effect requires to completely phase-out RE premiums with increasing carbon prices. Finally, a fuel switch increases solar-induced abatement, whereas wind-induced abatement is rather invariant to a fuel switch. Yet, the differentiation of optimal subsidies between wind and solar power is modest.