Battery storage is moving from a relatively small grid resource to a meaningful force in U.S. electricity markets, and the pace of growth is accelerating.

According to the U.S. Energy Information Administration, utility scale battery capacity has grown at an average annual rate of 70% over the past three years. The United States ended 2025 with 43.6 GW of battery storage and added another 8.3 GW during the first half of 2026, bringing total capacity to nearly 52 GW. Another 54 GW is currently planned through 2028.

The headline is the growth. The more important story for energy buyers is how batteries are beginning to change the shape of electricity demand and pricing.

Batteries Are Becoming an Economic Resource

Battery operators can charge when electricity is inexpensive and discharge when electricity is expensive.

As solar production increases during the middle of the day, wholesale electricity can become extremely inexpensive and occasionally negative. Batteries absorb some of that excess power and then discharge later, when solar output declines and demand remains elevated.

The result is the potential for fewer extreme lows during oversupplied hours and fewer extreme highs during peak periods.

Batteries do not create electricity. They move electricity from one period to another.

That distinction is important because batteries are increasingly functioning more like peaker plants than baseload generation. They are designed to respond during a relatively small number of high demand hours when the grid is under the greatest stress.

And in many cases, they can do that much more economically than building generation that may only be needed during the 20 or so highest demand days of the year.

Texas and California Are Showing What Comes Next

The impact is already becoming visible in markets with significant battery penetration.

California batteries are now supplying thousands of megawatts during critical evening hours when solar generation falls but demand remains high.

Texas is experiencing a similar transformation. ERCOT has seen extraordinary growth in solar generation alongside rapid battery development. Batteries increasingly discharge during the evening ramp, helping the system manage record demand without producing the sustained explosion in wholesale prices that many expected several years ago.

This is an important reminder that electricity demand is only one side of the price equation.

If battery storage can reduce the amount of generation needed specifically to meet a limited number of extreme peak periods, the grid may be able to accommodate significant load growth with less new generation than traditional peak demand forecasts would otherwise suggest.

Storage Is Also Creating Opportunities for Customers

The opportunity is not limited to utilities and wholesale markets.

Commercial and industrial customers can increasingly use batteries to participate in demand response, capacity and other demand reduction programs.

EnerNova and our partners have developed multiple structures depending on the needs of the customer.

Under some structures, a battery can be installed at little or no cost to the customer. The supplier or project partner captures the economic value created through demand response and grid programs, while the customer receives the potential benefit of backup power and improved resiliency.

Under other structures, the customer purchases the battery and retains the economic value generated through these programs. That can include payments for reducing demand during critical grid periods as well as potential savings from lowering peak demand charges.

For the right customer, the economics can be compelling. Instead of simply paying for electricity, the customer can potentially turn its ability to reduce load into a revenue producing asset.

Batteries Complement Firm Generation Rather Than Replace It

Battery growth does not eliminate the need for natural gas, nuclear or other forms of dependable generation.

Most batteries can discharge for only a limited number of hours. They are extremely effective at addressing short periods of peak demand, but they cannot independently support the grid through extended periods of severe weather, low renewable production or sustained system stress.

Their greatest value may instead come from reducing how much additional generation must be built solely to serve the highest demand hours of the year.

Firm generation provides reliability over long periods, while batteries and demand response can help manage the relatively small number of hours when the system is most constrained.

For energy buyers, this means battery storage should increasingly be viewed as both a market fundamental and a potential customer strategy. It can affect wholesale pricing, reduce peak system requirements and, in the right structure, create direct economic and resiliency benefits for the customer.

At EnerNova, our goal is to put clear facts and data in front of our clients so they can make properly informed decisions rather than reacting to fear. We help customers understand not only where electricity demand is going, but how changes in generation, storage and market structure can affect the price they ultimately pay. Increasingly, that also means finding ways for customers to participate in these markets themselves and turn changing grid conditions into an opportunity.