A big solar panel and Accumulator that generates more energy for a big cost, but smaller space.
Mods introducing new content into the game.
Changes to power production and distribution.
Since the current sprites are just bigger versions of the original sprites, could they use HD sprites like in https://mods.factorio.com/mod/factoriohd_modpack?
Try this one here out; https://mods.factorio.com/mod/big-energy-solar-wind-and-accumulator