Combined hydro & heat pump system
We knew we wanted to make the most of the renewable energy potential of the old mill race. We didn't know how. The solution for us was to combine an 11KW archimedes screw hydro system with 30KW of water source heat pumps - we now produce 70k KWhr of electricity per year and 90KWhr of heat, saving over 50 tonnes per annum in CO2 emmissions
This is an ancient Mill Site, shown here with the mill as rebuilt in 1876. The mill was demolished in 1922, the house remodelled in 1928 and the old Granary building renovated most recently.
In order to improve migratory fish passage the Environment Agency specified a fish pass and upgraded stream to link upstream and downstream for the first time in hundreds of years. The river banks have been restored and the water meadow is being reinstated with wild flowers. Read more
20th Feb 2015
Certification just achieved for the Renewable Heat Incentive (RHI) - non domestic scheme...after a close to 9 month process. Reinforces the logic and economics of a combined hydro electric/heat pump scheme Read more
31st May 2012
Frensham Mill and ISO Energy win 'Best Domestic Installation of the Year' at the National Heat Pump Awards. Read more
12th May 2012
Rt Hon Jeremy Hunt, MP for SW Surrey, officially opens the installation at our charity open day.
We hope that this site will be of value to those interested variously; in renewable energy and the particular potential offered by old mill sites, the history of this mill and the work to enhance migratory fish passage and the local environment.