Battery Storage and Data Centers Are Reshaping the Utility Grid
The electric utility industry is entering a period of extraordinary infrastructure growth.
Two trends in particular are converging at a remarkable pace: the rapid expansion of utility-scale battery energy storage and the massive increase in electrical demand created by data centers and artificial intelligence.
Individually, either trend would be significant.
Together, they are beginning to reshape how utilities think about generation, transmission, substations, distribution, reliability, and long-term system planning.
Battery Storage Is Moving to Utility Scale
Battery energy storage systems, commonly referred to as BESS, have moved well beyond the emerging-technology stage.
By mid-2026, approximately 52 GW of utility-scale battery storage capacity was operating in the United States.
Even more significant is the rate of growth.
U.S. utility-scale battery capacity has increased at an average rate of approximately 70% per year over the past three years.
At the end of 2025, the United States had approximately 43.6 GW of operating utility battery capacity. Another 8.3 GW was added during the first six months of 2026 alone.
And the pipeline remains substantial.
Approximately 54 GW of additional battery capacity is currently planned over the next several years, potentially more than doubling today's installed U.S. battery fleet.
Globally, the trend is just as dramatic. More than 100 GW of new battery storage capacity was deployed during 2025, with utility-scale systems representing the majority of those additions.
Why Utilities Are Adding Storage
Battery storage gives utilities another tool for addressing a grid that is becoming increasingly complex.
Depending on the application, battery systems can help support:
Peak demand management
Grid stabilization and frequency response
Renewable energy integration
Energy shifting
Capacity requirements
Transmission and distribution constraints
Resiliency and emergency response
Infrastructure planning and system flexibility
The result is a new category of large-scale electrical infrastructure being deployed alongside traditional generation, transmission, and distribution assets.
And these projects require much more than batteries.
They require interconnections, substations, transformers, conductors, connectors, grounding systems, protection equipment, monitoring, controls, and the supporting infrastructure necessary to safely connect these facilities to the grid.
At the Same Time, Data Centers Are Creating Massive New Loads
While utilities are rapidly deploying storage, another transformation is taking place on the demand side of the meter.
Data centers are becoming some of the largest concentrated electrical loads utilities are being asked to serve.
Current projections suggest U.S. data-center electricity consumption could approach 650 terawatt-hours annually by 2030 under a reference growth scenario.
That would represent nearly 12% of total U.S. electricity consumption.
The potential range is even broader, with some projections placing data-center demand between approximately 9.5% and 15% of total U.S. electricity consumption by the end of the decade.
Artificial intelligence is helping accelerate that growth.
Electricity demand from AI-focused computing infrastructure is expected to grow significantly faster than overall electricity consumption, placing additional pressure on utilities to develop generation and grid infrastructure quickly enough to keep pace.
Data centers could account for nearly half of U.S. electricity-demand growth through 2030.
That is an extraordinary shift in load growth occurring over a relatively short period of time.
Batteries and Data Centers Are Beginning to Converge
The connection between these two trends is becoming increasingly important.
Data centers require extremely high levels of power quality, resiliency, and reliability. Battery-based uninterruptible power systems have long been part of that equation, but the scale of these systems is increasing rapidly.
Approximately 45 GW of battery-based UPS capacity was added globally during 2025, an increase of roughly 30%, with data centers responsible for much of that demand.
The role of batteries may also expand beyond traditional backup power.
Energy storage can potentially become part of a broader power architecture involving onsite generation, microgrids, load management, utility interconnections and grid-support strategies.
For utilities, this means the line between a large electric customer and a potential grid resource may continue to evolve.
The Opportunity Goes Far Beyond the Battery
The headlines may focus on batteries and artificial intelligence, but underneath those technologies is an enormous amount of traditional electric infrastructure.
More battery facilities and larger data centers mean more demand for:
Substation infrastructure
Transmission and distribution capacity
Conductors and connections
Transformers
Grounding systems
Protection and control equipment
Monitoring and communications
Switching equipment
System hardening
Grid reliability solutions
The electrical grid remains the foundation connecting all of it.
Preparing for the Next Era of Power Demand
For utilities, the challenge will not simply be producing more electricity.
It will be safely and reliably delivering enormous amounts of power to highly concentrated new loads while simultaneously integrating new generation and energy-storage resources.
That requires investment throughout the grid.
At Pacific Power Reps, we work alongside utilities, engineers, distributors and industry partners to help identify solutions for the evolving needs of the electric power system.
Battery storage and data centers may represent two of today's fastest-growing areas of the energy industry, but their impact extends much further.
They are accelerating a much larger transformation of America's electric grid.
And that transformation is only beginning.
Data sources: U.S. Energy Information Administration, Lawrence Berkeley National Laboratory, International Energy Agency
