Renewables are now the cheapest source of new electricity in most of the world, but cost is only half the story. Their variability means the grid must evolve to match supply and demand across hours, days, and seasons. Storage, flexibility, and interconnection are what turn cheap renewables into reliable power.
Batteries handle short swings; longer gaps need pumped hydro, hydrogen, or demand response. A diverse portfolio beats any single solution.
The transition succeeds not when renewables are cheapest, but when they are dependable at any hour.
Cheap Renewables Need a Smarter Grid to Deliver