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First month I can measure the real changes I’ve made at home, namely a new boiler, secondary glazing inside the house, switching off anything that used to be on standby, and turning the thermostat down a bit. The first photo is November 2021’s usage, the second is last month’s usage. I’ve used 40% less electricity and 60% less gas, and based on current prices I’ve saved £253 last month alone - phew!