Assets by Government

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GREAT BRITAIN · GENERATION SUPPORT

Which government agreed the support?

Capacity is attributed to the UK government in office when the project’s principal support agreement was awarded or agreed.

Generation type

GW supported

Methodology. This chart measures supported/contracted capacity, not the capacity physically built by a government and not current ownership. CfD rounds use the published allocation result date as the support-award date. Hinkley Point C uses the final CfD signing date; Sizewell C uses Final Investment Decision/RAB support approval. Projects can later be cancelled, terminated or reduce capacity, so auction-result totals should not be read as today’s operational installed capacity.

View underlying data

Agreement	Date	Government	Technology	GW	Mechanism	Source

What does this chart show?

This chart shows electricity generation capacity by the UK government that was in office when the project’s principal support agreement was made. Capacity is measured in gigawatts (GW). Use the generation-type selector to see how supported capacity is distributed between governments.

How we attribute generation to a government

A generating asset is attributed to the UK government in office on the date its principal support agreement was awarded or formally agreed. Depending on the generation project, this may include a Contract for Difference (CfD), nuclear support agreement, Regulated Asset Base arrangement, or another qualifying support mechanism.

This does not mean that the government shown built, owned, financed or commissioned the generating asset. Electricity projects can take many years to develop and may span several governments. Planning permission, construction, commissioning and subsequent ownership can therefore occur under different administrations.

The chart measures generation capacity associated with support agreements in GW, not electricity actually generated (GWh/TWh), government expenditure, subsidy received, project cost or current ownership.

Where a support scheme was established by one government but an individual project’s support agreement was awarded under another, we attribute the capacity to the government in office when the project’s support agreement was made, rather than the government that originally created the scheme.

Percentages represent the share of capacity contained within the dataset and selected generation category. They should not be interpreted as a measure of a government’s overall energy performance or effectiveness.

Data coverage: The dataset is being compiled from official UK government and regulatory records. Some historic support mechanisms do not provide an agreement directly comparable with modern CfDs, so historic projects should only be included where a consistent attribution can be established.