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Designing an incentive-compatible efficient Renewable Electricity Support Scheme

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  • Newbery, D.

Abstract

Most existing renewables support schemes distort location and dispatch decisions. Many impose unnecessary risk on developers, increasing support costs. Efficient policy sets the right carbon price, supports capacity not output, and ensures efficient dispatch and location. The EU bans priority dispatch and requires market-based bidding, but does not address the underlying problem that payment is conditional on generation, amplifying incentives to locate in wind/sunny sites. This article identifies the various distortions and proposes an auctioned contract to address location and dispatch distortions: a financial Premium Contract for Difference (PCfD) with hourly contracted volume proportional to local renewable output/MW, with a life specified in MWh/MW, reflecting regional differences in correlation with wholesale prices. This yardstick PCfD delivers efficient dispatch, assures but limits the total subsidy while not over-rewarding windy/sunny sites. The revenue assurance allows high debt: equity, dramatically lowering the subsidy cost.

Suggested Citation

  • Newbery, D., 2021. "Designing an incentive-compatible efficient Renewable Electricity Support Scheme," Cambridge Working Papers in Economics 2128, Faculty of Economics, University of Cambridge.
    • Handle: RePEc:cam:camdae:2128
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    References listed on IDEAS

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    More about this item

    Keywords

    renewables support schemes; distortions; auctions; yardstick contracts;
    All these keywords.

    JEL classification:

    • D44 - Microeconomics - - Market Structure, Pricing, and Design - - - Auctions
    • D62 - Microeconomics - - Welfare Economics - - - Externalities
    • D86 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Economics of Contract Law
    • H23 - Public Economics - - Taxation, Subsidies, and Revenue - - - Externalities; Redistributive Effects; Environmental Taxes and Subsidies
    • H25 - Public Economics - - Taxation, Subsidies, and Revenue - - - Business Taxes and Subsidies
    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities
    • Q28 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Government Policy
    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources
    • Q48 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Government Policy

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