Nuclear power
Rare5.5%StoryOptional
Start producing electric power by nuclear powerplant.
Set up a working nuclear reactor. You need Nuclear Power research and uranium (mine it with sulfuric acid, enrich it in a Centrifuge into fuel cells). Layout: Reactor with a fuel cell → Heat Exchangers turning water to steam → Steam Turbines making the power. Pops once the turbines are spinning. Way more power-dense than steam or solar.