Ian Rock

For years, “firming” was treated as a simple modeling exercise. Pair a renewable plant with a two-hour battery, shift energy into the evening, and call the product firm. That approach made sense when renewables played a smaller role in grid operations. It no longer reflects how the system behaves today.

Scroll to section In this article News Looking to add loft insulation? Our guide outlines how much you can expect to pay Installing the right amount of loft insulation will stem heat loss, saving on energy bills. But just how much does it cost to insulate a loft? Our expert reveals all. Large numbers of homes in Britain are worryingly under–endowed in the insulation department.

“Indoor rain” is the name surveyors give to dampness that’s generated internally in our homes. In a wet and overcast country like Britain, we focus on keeping rainy weather on the outside, where it belongs. But dampness caused by indoor condensation can be equally damaging to buildings. And roof spaces are particularly vulnerable to condensation problems, because warm, moisture-laden air naturally rises up to the top of the house.