Journal
ENERGY ECONOMICS
Volume 115, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.eneco.2022.106345
Keywords
Carbon price; Cannibalization effect; Merit-order effect; Renewable energy; Market values
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Support payments for renewable energies are crucial in combating climate change globally, but the cannibalization effect caused by renewable energy feed-in can undermine their market values. This study finds that a meaningful carbon price can significantly counteract this problem and boost the integration of renewable energies in the market.
Support payments for renewable energies (RE) are a key climate-change policy in many jurisdictions globally. However, RE feed-in lowers the wholesale electricity price, thus cannibalizing their own market values. Despite steep cost degression, cannibalization endangers the hopes that RE may eventually survive in the market independently from subsidies. We apply a flexible econometric model to quantify the cannibalization effect together with influential factors that may counteract the problem. Our data are for the German electricity market, which is characterized by a high and increasing share of intermittent RE. We show that wind and solar infeed significantly cannibalize their own market values and that a meaningful carbon price can substantially counteract this problem. Thus, market-based climate policy may significantly boost RE's integration. This is also relevant for other countries' climate agendas. However, once power generation is fully decarbonized, support from carbon pricing will lapse and the design of the energy market will need to be reconsidered.
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