Modern building techniques also play a big part in it. Houses build to modern building standards (see Scandinavia and Central Europe - the UK and Ireland is sti

Modern building techniques also play a big part in it. Houses build to modern building standards (see Scandinavia and Central Europe - the UK and Ireland is still lacking here) uses a hell of a lot less energy for heating than houses built even two decades ago. Last year I was renting a house built in the early 2000s. It was poorly insulated and inside we had the thermostat set to 18c, yet our gas bill for November was €400. Over Christmas I moved into a newer house built in 2018 that was the same size, the thermostat was set to 22c and during February (which was much colder than November) the gas bill was under €200.