The source likely says “x g of co2 per kWh”, and doesn’t break that into fixed and variable. I suspect the sources would typically underestimate legacy sources

The source likely says “x g of co2 per kWh”, and doesn’t break that into fixed and variable. I suspect the sources would typically underestimate legacy sources (meausiring the co2 from burning gas but not the co2 from maintaining the oil rig)