You live and work in buildings whose construction needed a lot of energy, for example, and the construction business uses a lot of fossil fuel. But I agree. Be

You live and work in buildings whose construction needed a lot of energy, for example, and the construction business uses a lot of fossil fuel. But I agree. Belgium is richer than Burundi, but not because construction in Belgium uses cement mixers driven by petrol engines while those in Burundi use electric power. It's richer because it has structures such as your university (buildings and institutions) that educates people to a level quite different from Burundi. The dirty or clean power used to build is a detail. Like, in a way, your cycling. Compared to a car, your cycling cuts the relevant emissions drastically with ~zero impact on your actual quality of life. Belgium didn't turn poor like Burundi when it stopped burning coal, it kept the good parts (like that university) and just used less dirty power sources. It didn't even grow poorer.