The Solar Park

Westmill Solar Park is located near to Watchfield, on the Wiltshire/Oxfordshire border, just off the A420. The site consists of 30 acres of over 20,000 polycrystalline PV panels generating 4.8GWhr/year – approximately the equivalent to a year’s electricity consumption of 1,400 homes in Oxfordshire and enough to prevent 2,000 tonnes of carbon dioxide emissions annually. It is, we believe, the UK's first and world's largest cooperatively run, community-owned solar farm. 

Realtime Solar Production


This is an illustrative graph of 'real time' production based on sunlight levels (data coutesy of Power Oasis). Click here to download the predicted output.

Actual Generation

To see all the monthly generation and irradiation graphs and data comparing generation against expected yield follow the links below:

Below are generation and irradiation graphs for the last four quarters so that you can see the seasonal variation in power generation. Note the different scales on the left hand side of the graphs.

Generation Irradiation March 2014.pngGeneration Irradiation Dec 2013.pngGeneration Irradiation Sept 2013.pngGeneration Irradiation June 2013.png 

The Technology

Solar power is one of the most well-established and reliable renewable energy technologies.

Solar power is in operation across the world and installed solar capacity is now above 32 GW globally. Solar Photovoltaic (PV) panels have no moving parts and therefore require little maintenance. They produce no noise, vibration or pollution. Solar PV panels operate even in cloudy conditions and have been installed across the country. The South of England is particularly suited to solar PV due to the relatively high levels of sunlight.

Watch a video of the Solar Park from the air