Power Saving Guide is an independent guide to using less electricity, gas and fuel, written plainly and with nothing to sell you.
It has an embarrassingly long gestation. The idea started in 2004 as a little ebook about saving energy, meant to be sold to people on eBay, and then, as ideas do, it sat in a drawer for twenty years. The advice has only become more relevant since, and the format is better as a free, searchable site than a PDF anyway.
The guiding principle is the one on the home page: spend your effort where the energy actually goes. A great deal of energy advice fixates on trivial savings while the expensive things run unquestioned. Everything here tries to keep the proportions honest, which is why the calculator works in real money rather than vague encouragement.
Figures on the site are worked examples to illustrate the sums; your own tariff, climate and habits decide the real numbers. Corrections and suggestions are welcome.