Elon Musk says the fastest way for the U.S. to dramatically increase effective energy output isn’t to build new power plants: it’s to deploy batteries at scale. Musk believes that by buffering existing energy sources, the U.S. could nearly double the amount of usable energy it produces each year without the need for massive new-generation investments. He also noted that China has moved aggressively in this direction, building huge battery systems on an industrial scale alongside electric vehicles and solar power.
Musk’s argument hinges on a distinction that rarely enters the public energy debate: peak power versus average power. Tesla (TSLA) and SpaceX CEO Musk said the U.S. power system can provide about 1.1 terawatts of electricity during peak demand, but average usage is closer to half a terawatt. This means that large amounts of generating capacity exist only to meet short-term demand and remain underutilized most of the time.
In Musk’s view, batteries are the simplest solution to this mismatch. By charging during periods of low demand (usually at night) and discharging during peak hours, energy systems can significantly increase the useful work performed over the course of a year. Remarkably, this improvement does not require doubling power plants, transmission lines or fuel inputs. It’s largely a matter of storing energy smarter.
From this perspective, batteries are not a peripheral technology. They become core infrastructure. Musk describes large-scale storage as the most effective lever for improving the nation’s energy productivity, arguing that the system already has raw capacity and just lacks the buffer needed for continued use.
When asked why this hasn’t been fully implemented yet, Musk said that in some parts of the world it has been. He noted that China is producing massive amounts of battery packs, scaling up electric vehicle manufacturing and deploying solar energy at unprecedented levels. Whether through deliberate strategy or parallel reasoning, Musk hinted that China is building an integrated energy system where power generation and storage go hand in hand, saying: “China seems to be listening to everything I say and basically doing it. Or they’re just doing it independently. They’re definitely making a lot of battery packs, like really massive battery pack production. They’re making a lot of electric cars and a lot of solar.”
