E.g. many wind turbines instead of one huge power plant.
This means that adaption over time can happen much faster and can potentially happen during the implementations of larger long term projects (e.g. huge off shore wind farms).
It also means prototyping cost tends to be cheaper and it can be easier adopted by smaller groups instead of needing larger consensus.
While I used wind turbines as an example it's also true for many other aspects like Geo-termal power, solar energy, solar powered water heating, etc.
Even some classically "huge" projects like dams have smaller (micro) versions by now which as far as I can tell advance much faster in technology (often technology about micro-dams having less negative effects on the small-river they are build into, wrt. to fish but also sediment movement).
Add to this that research on many of the renewable energies is ongoing since quite a long time and that increasingly more people and countries realize the importance it's not too surprising I think.