Ministers have drawn up plans to give households free ‘plug-in batteries’ to cut their energy bills. The Department for Energy Security and Net Zero (DESNZ) have worked up a proposal which would see the Government bulk buy the devices and distribute them to low-income homes, The i Paper can reveal. Plug-in batteries are portable energy storage units that can be plugged into a socket without any household rewiring. They work by drawing electricity through the socket – typically during the off-peak period of a time-of-use tariff – and then discharging back through the same socket to offset demand at times […]