Rightmove warns almost £25bn needed to insulate 2.9m UK homes by 2030 Energy There are 2.9 million houses that will require £23.4bn in improvements to meet the government’s energy performance certificate (EPC) standards by 2030, according to Rightmove. New analysis from the property portal found that an average of £8,074 will have to be spent on rental homes to upgrade them to a C rating by EPC standards. [...]