Can solar and wind and batteries provide 24/7/365 electricity?
The article examines whether solar and wind power, combined with battery storage, can reliably supply round-the-clock electricity throughout the year. It analyzes the technical and economic challenges of achieving 24/7/365 renewable energy, including intermittency, storage capacity, and grid stability issues.
Background
- This article challenges the claim that a grid powered entirely by solar, wind, and batteries can meet electricity demand around the clock, every day of the year — without fossil fuels or nuclear backup.
- It focuses on "resource adequacy": the ability of a power system to handle rare but extreme weather events (e.g., a multi-day winter storm with no sun and low wind) when renewable generation drops sharply and demand spikes.
- The author argues that batteries can only store a few hours of electricity at current scale, and that seasonal gaps (weeks of low renewable output) require either enormous overbuilding of renewables and storage, or "dispatchable" sources like gas, coal, or nuclear — which the article implies pro-renewable advocates downplay.
- This is part of a long-running debate in energy policy: whether a 100% renewable grid is technically feasible and economically realistic, or whether it overlooks the "last few percent" of reliability that backup thermal plants provide.