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Wind Energy Statistics Explained
Statistics about offshore and onshore wind in the UK, powered by our EnergyPulse platform.

Projects
The number of operational wind energy projects.

Onshore Capacity (MW)
The total installed capacity of all onshore wind farms.

Energy produced (MWh/year)
Calculated by multiplying the installed capacity in MW by the number of hours in a year (8760) and then multiplying this by DESNZ's longterm average load factor for (onshore + offshore) wind (30.82%) expressed as a fraction of 1 (e.g. 0.3082).
Source for capacity factors is Digest of United Kingdom Energy Statistics (DUKES) published annually by DESNZ (Department for Energy Security and Net Zero).

CO2 Reductions (per year) in Tonnes
RenewableUK uses DESNZ’s “all nonrenewable fuels” emissions statistic of 437 tonnes of carbon dioxide per GWh of electricity supplied in the Digest of UK Energy Statistics (July 2024) Table 5.14 ("Estimated carbon dioxide emissions from electricity supplied”).
Carbon reduction is calculated by multiplying the total amount of electricity generated by wind per year by the number of tonnes of carbon which fossil fuels would have produced to generate the same amount of electricity.
E.G. UKWED stated (August 2024) “Energy produced (MWh/year): 81,801,845MWh”  therefore 81,801.845GWh x 437 tonnes = 35,747,406 tonnes of carbon emissions saved.

Turbines
The number of operational wind turbines.

Offshore Capacity (MW)
The total installed capacity of all offshore wind farms.

Homes Powered Equivalent
Calculated using the most recent statistics from DESNZ showing that annual GB average domestic household consumption is 3,239kWh (as of January 2024, updated annually).
RenewableUK calculates homes powered as: number of megawatts installed, multiplied by DESNZ's "all wind" (onshore + offshore) load factor expressed as a fraction of 1, multiplied by number of hours in a year, divided by average annual domestic electricity consumption expressed in MWh.
As an example, using statistics available in January 2024: 30,298.865 MW installed capacity x 0.3082 “all wind” load factor x 8,760 hours / 3.239MWh annual consumption = 25,255,279 homes powered equivalent. 
Load factors
The load factor is the actual output of a turbine benchmarked against its theoretical minimum output in a year.
The load factor is calculated by RenewableUK as a rolling average of the past five years using data (on an Unchanged Configuration Basis) from the Digest of UK Energy Statistics published by the Department for Energy Security and Net Zero, using stats 20192023 (released in July 2024):
 onshore wind: 26.34%
 offshore wind: 40.58%
 DESNZ "all wind" (onshore + offshore): 30.82%
It’s worth noting that load factors have been increasing over time due to technological innovation. DESNZ states in its CfD (Standard Terms) Regulations document that the load factor for new build projects (for delivery years 20262029) is 62.3% for offshore wind, 44.8% for onshore wind (>5MW) and 44.8% for remote island wind – see Table J: Assumed Load Factor pages 6 and 7).
Where do we source our data?
We update data as soon as we receive new information and we make every attempt to make sure it’s accurate. Please note that we only hold information on projects of 100kW and larger. Data on estimated CO_{2} reductions (per year) is in tonnes. Energy Produced (MWh/year) is modelled using government data, which is subject to change on an annual basis. These fluctuations are due to changes in average home energy use as well as the volume of wind capacity in operation and the average wind power load factors experienced in the previous year.