Lidl, Asda, Amazon and B&Q among chains in talks to sell devices that feed into household sockets and can cut electricity bills by 30% Spanish homes save €10 a month via renewables expansion Bosses of some of Britain’s biggest retailers are discussing plans with the government to start selling plug-in solar panels as part of a drive to encourage more UK homes to generate their own electricity. Executives from brands including Currys, B&Q, Amazon and Lidl met Martin McCluskey, the minister for en