“Oversimplifying monstrously, clean energy technology requires big CapEx outlays today for low or next-to-no OpEx for decades.“
“This is why finance is so important to clean energy—it’s the way we teleport those future OpEx savings through time and space to cover those higher upfront costs.“
So argues this interesting article, exploring clean energy.
This chart summarises the idea nicely (excludes things like biomass which are an exception).