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1. Where Does the Money Go? An Analysis of Revenues in the GB Power Sector During the Energy Crisis

Author:
Serguey Maximov, Paul Drummond, Phil McNally, and Michael Grubb
Publication Date:
05-2023
Content Type:
Working Paper
Institution:
Institute for New Economic Thinking (INET)
Abstract:
The gas crisis has fed through to a huge impact on wholesale electricity prices in Britain. We use hourly price and generation data to estimate the impact on associated revenues to different types of generators. Given the extent of forward contracting, we complement simple results based on the day-ahead prices (“Case 1”) with a more realistic case based on a representative, technology-specific assumptions on forward contracts (“Case 2”). We estimate that revenues to GB generators rose by almost £30bn, from about £20.5bn/yr (pre- Covid) to £49.5bn in 2022. About 70% of this accrued to gas generators (from about £6bn/yr to £19bn) and renewable generators with Renewable Obligation Certification (from £7.7bn to £15.5bn). There are various indications that the increase in revenues to gas plants significantly exceeded the rise in their input costs, and no reason to think the generating cost of these renewables significantly increased. Nuclear, and some other biomass and renewables also benefited. We find that the Electricity Generation Levy, introduced in Jan 2023, would have had limited impact on these numbers if it had existed in 2022 and is likely to have less impact in 2023. Finally, we discuss reasons and potential implications of the findings.
Topic:
Economics, Environment, Money, Energy Crisis, and Revenue
Political Geography:
Britain and Europe

2. Navigating the Crises in European Energy

Author:
Michael Grubb
Publication Date:
09-2022
Content Type:
Working Paper
Institution:
Institute for New Economic Thinking (INET)
Abstract:
The energy crisis engulfing Europe is a crisis of both gas and electricity markets, with huge cost impacts on consumers across all European countries. In Britain, half of typical household energy expenditure arises from electricity. This paper examines how the cost of gas-powered generation feeds through to electricity bills, on the principle of marginal cost pricing, setting the price for most of the time though it accounts for only about 40% of GB generation. Combined with the steep decline in wind and solar costs over the past decade, this has resulted in an unprecedented degree of ‘cost inversion’ in the electricity system. We offer estimates of the increase of revenues across the wholesale market, and outline five principles for reform for addressing the combined challenges of energy costs and accelerating low-carbon transition.
Topic:
Climate Change, Energy Policy, Environment, Green Technology, and Energy Crisis
Political Geography:
Global Focus

3. Separating electricity from gas prices through Green Power Pools: Design options and evolution

Author:
Michael Grubb and Drummond Pike
Publication Date:
11-2022
Content Type:
Working Paper
Institution:
Institute for New Economic Thinking (INET)
Abstract:
This paper develops a detailed proposal for an efficient way to channel the value of large-scale renewables, which have become much cheaper than gas-driven wholesale electricity prices, to consumers at ‘cost-plus’ prices. This would reduce the fiscal pressure on governments for market- wide subsidies and offer more stable support for consumers most in need. We detail how this ‘green power pool’ approach could interact with the wholesale market to ensure firm power, also bringing transparency to the cost of balancing the variable renewables output, and maintaining incentives for efficient supply and demand responses. We illustrate the approach with reference to the cost and volume trajectories of UK renewables backed by government CfDs, targeted initially to particular consumer groups, as a first step in a wider transition towards direct consumer access to cheap renewables.
Topic:
Climate Change, Energy Policy, Green Technology, Renewable Energy, and Energy Crisis
Political Geography:
United Kingdom and Europe