Delabole wind farm's tall turbines power more homes
Turbines on the UK's first commercial wind farm in Cornwall are being taken down and replaced with fewer, but bigger ones.
There are currently 10 50m (164ft) turbines at the site which supply power to about 2,700 homes.
The four new turbines will be nearly twice as tall - standing at 99m (325ft) to the tip of the blade.
The total combined capacity of 9.2MW will be enough to supply nearly 8,000 homes with electricity.
Delabole wind farm was built by the Edwards family in 1991 as a greener alternative to plans for a nuclear power station in the area.
Since 2002 it has been owned and operated by Good Energy, which is investing £11.8m to re-power it.
The company's founder, Juliet Davenport, said: "Delabole is a fantastic example of home-grown energy.
"By increasing its capacity we can contribute to Cornwall's renewable energy targets, increase price stability for Good Energy's own electricity supply business and take an essential step towards helping the UK achieve a 100% renewable future."