EDF Energy is offering its customers solar panels for free , complete with energy storage kits , if they agree to buy the subsidised power generated from that solar energy for 20 years . In return, EDF gets to keep the feed-in tariff paid by the government, which is worth about £150 a year. The French energy company wants to trial 100 homes in its pilot project , in conjunction with solar - cell supplier Lightsource . Assuming the customers have the correct angle and direction of roof , it is expected that homeowners will be able to pay off the costs for the project in 20 years through feed - in tariffs and reduced energy costs .
EDF Energy is offering its customers solar panels for free , complete with energy storage kits , if they agree to buy the subsidised power generated from that solar energy for 20 years . The French energy company wants to trial 100 homes in its pilot project , in conjunction with solar - cell supplier Lightsource . Assuming the customers have the correct angle and direction of roof , it is expected that homeowners will be able to pay off the costs for the project in 20 years through feed - in tariffs and reduced energy costs .