The cash will be available from midday on Monday 16 March, with up to £5,600 available to households to help with the cost of a range of energy efficiency measures including solid wall insulation, double glazing, cavity wall and floor insulation.
More than 25,000 households have already received cash vouchers from the Green Deal Home Improvement Fund since it launched in June 2014.
Energy secretary Ed Davey said: “We’re helping families keep warmer for less – driving bills down by encouraging more competition between energy suppliers and making over one million homes more energy efficient.
“Households up and down the country are reaping the benefits of a warmer home thanks to the Green Deal Home Improvement Fund. And now, with more money available, thousands more can benefit.”