Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, what the average capital cost per megawatt of capacity is for UK offshore wind farms that (a) were commissioned in the last five years, (b) are due to be commissioned in the next five years and (c) was assumed in his Department's 2020 Cost of Electricity Generation report.

The Department’s 2020 Cost of Electricity Generation Report[1] presents forecasts from 2025 to 2040. In response to point (c), the capital costs assumed in the report are £1.95million per megawatt capacity, in 2018 prices, for a UK offshore wind farm commissioning in 2025. The above can also be taken as the Department’s assumption for (b), wind farms that are due to be commissioned in the next five years.

The Department does not hold historic project data on (a), capital costs for UK offshore wind farms commissioned in the past five years.

[1] https://www.gov.uk/government/publications/beis-electricity-generation-costs-2020