Are solar panels a good investment?
6 February 2014 Last updated at 16:09 GMT
Energy minister, Greg Baker, has claimed that installing solar panels would deliver a better financial return than a pension.
So should those approaching retirement invest their savings in a pension - or in panels?
Leonie Greene from the Solar Trade Association told BBC Radio 5 live's Dominic Laurie: "There's no wear and tear so actually it's an incredibly long-lasting technology."
However consumer expert Martin Lewis warned that although solar panels were guaranteed for 25 years, the companies selling them could have disappeared in that time.