As electric vehicle demand cools and billions of dollars in battery investments sit underutilized, U.S. automakers are accelerating a pivot into energy storage—an adjacent but fundamentally different business where Tesla already holds a commanding lead. Ford and General Motors are repurposing EV battery factories to serve utilities, businesses, and homeowners, betting that rising electricity demand and grid constraints can offset slower EV adoption and reshape their long-term growth strategies.

Why Energy Storage Is Gaining Momentum

After years of relatively flat electricity consumption, U.S. demand is rising again, driven by data centers, cloud computing, and broader electrification of appliances and industrial processes. According to the U.S. Energy Information Administration, power usage is climbing just as renewable energy sources expand, intensifying the need for large-scale battery storage to manage intermittency. Batteries can store electricity when generation exceeds demand and release it when grids are stressed, turning volatility into revenue.

For automakers facing a slower EV transition than once projected, energy storage offers a way to monetize existing battery expertise and capital rather than idle it.

Ford and GM Reconfigure Costly Battery Bets

Ford Motor said in December it will convert a Kentucky battery factory—built with partner SK On—to produce batteries for energy storage, committing an additional $2 billion on top of nearly $6 billion already invested. Ford is also dedicating space at its Marshall, Michigan plant to residential storage cells, even as it continues producing batteries for an upcoming midsize electric truck. The strategy reflects a recalibration after EV sales fell sharply in late 2025 and internal forecasts were revised down.

General Motors has taken a parallel path. Its GM Energy division launched a residential storage product, the PowerBank, in late 2024 and partnered with Redwood Materials to deploy both new and repurposed EV batteries for grid applications. GM reported that GM Energy sales quintupled last year, with roughly 30% month-over-month revenue growth—early evidence that demand exists beyond vehicles.

Tesla’s Head Start and Profit Advantage

While legacy automakers are newcomers, Tesla has been building its energy division since 2015, when it introduced the Powerwall and Powerpack. As EV sales growth slowed, Tesla’s energy business emerged as a bright spot, now representing about 20% of total revenue with margins roughly double those of its automotive segment. Years of scale, integration, and operational learning give Tesla a significant edge as competitors enter the market.

Demand Is Rising—but Risks Remain

Energy storage demand is supported by regulation and economics. Utilities in several states must consider storage investments, and California has set explicit targets. Commercial demand—particularly from data centers—is expected to surge, with Department of Energy research cited by GM pointing to a potential threefold increase in electricity demand by 2028 versus 2023 levels.

Still, experts warn the market is young and prone to overshoot. A rapid influx of automakers could create a supply glut if demand lags expectations, echoing challenges seen in EV markets. Residential systems also remain costly, limiting adoption despite their appeal for backup power and grid arbitrage.

A Different Business, Not Just a New Product

Despite shared battery chemistry, energy storage differs materially from car manufacturing. Stationary batteries prioritize cost, longevity, and scale—not weight or compactness—and are sold to utilities, businesses, and homeowners rather than car buyers. That shift requires new sales channels, regulatory expertise, and workforce skills. Federal tax credits and incentives favor domestic manufacturing and reduced reliance on China, providing an additional tailwind for U.S.-based storage production.

Whether Ford and GM can close the gap with Tesla remains uncertain. What is clear is that the future of automaking is expanding beyond vehicles—toward managing electrons, grids, and energy resilience at scale.