British households are making more green energy upgrades than ever before after installing a record number of solar panels and heat pumps in the first half of the year, according to the industry’s official standards body. The industry figures show there were more green energy installations in June than in previous years. On average, more than 17,000 households installed solar panels every month this year, while the number of homes installing heat pumps reached 3,000 a month for the first time, according to the data.