> Domestic gas boilers are a big slice of the carbon emissions pie. They are apparently responsible for pumping twice as much CO2 into the atmosphere as all of our actual power stations combined.

No, the article says as all of the _gas-fired_ power stations. Gas is the biggest share by power emitter according to [https://www.nationalgrideso.com/electricity-explained/electr...] but you'll need to dig to get into the CO2 side of it.