The article examines how the rapid growth of data centers in the United States, combined with severe weather events like Winter Storm Fern, is stressing the electric grid and driving up costs for households and businesses.
It reports on findings from the Union of Concerned Scientists (UCS) about grid vulnerability, aging infrastructure, and the financial burden placed on ratepayers as demand for data center power climbs alongside ongoing storms.
The piece highlights regional dynamics in the PJM Interconnection, where data center demand and aging transmission networks intersect to create a precarious energy landscape.
Data center growth and grid risk: what the numbers show
Public experts are warning that uncontrolled data center expansion is not just a technology story—it is an energy and utilities story.
In the PJM region, home to the world’s largest concentration of data centers, peak electricity demand has risen far faster than new supply can keep up.
Between 2024 and 2025, four major utilities saw a combined peak demand rise by about 4,400 MW, underscoring a widening gap between consumption and new capacity.
Meanwhile, roughly 30,000 MW of U.S. data center capacity is under construction, representing an 80% increase in data center electricity demand over today’s levels.
These trends portend continued pressure on an aging grid that was not built to accommodate such concentrated, high-density loads.
There is a broader aging story behind these numbers.
Much of the U.S. transmission network was built in the 1950s–60s and has exceeded its intended lifespan.
This aging framework makes the system more vulnerable to outages during extreme weather, when demand spikes for heating and cooling converge with data center power needs.
The combination can trigger cascading failures and prolonged outages, especially if siting decisions and approvals for new infrastructure remain opaque or fragmented.
Costs and risk: what’s at stake for ratepayers and the economy
UCS modeling paints a stark economic picture if the current trajectory continues.
By 2050, researchers project nearly $1 trillion in wholesale electricity costs attributable to data centers.
In the short term, the bill is already rising for consumers and businesses; in seven states, ratepayers shouldered more than $4 billion in costs during 2024 alone.
Several interrelated factors feed these costs: transmission constraints, limits on interconnection, and policy gaps that fail to align incentives with reliability and affordability.
In practice, interconnection practices often rely on incremental and sometimes controversial approaches—such as tying new data center buildouts to gas wells or to unapproved nuclear capacity—shifting risk and cost onto ratepayers rather than the data center owners who drive the demand.
The result is a transparency deficit in project approvals and planning that can leave communities exposed to both outages and higher prices when supply cannot meet demand during peak periods.
- Cost implications: UCS projects substantial wholesale electricity costs tied to data centers by mid-century.
- Ratepayer burden: Public dollars and regulated rates already bear significant costs in several states.
- Infrastructure age: The grid’s aging backbone requires modernization and robust planning to avoid future outages.
- Policy misalignment: Current interconnection and siting rules can transfer risk away from data center developers and onto households.
Charting a path forward: what needs to change to protect reliability and affordability
Experts argue that without deliberate policy and regulatory changes, the data center boom will continue to stress the grid and raise prices during extreme weather events. This trend also threatens public health and climate goals.
The proposed remedies focus on stronger regulation and fair cost allocation to data centers. They also emphasize expanded clean energy and battery storage and robust resiliency investments across the transmission network.
Transparency in local approvals is essential. Comprehensive transmission planning is also called out as a key step to shore up reliability and ensure ratepayer protections.
From a practical perspective, this means coordinating land-use decisions with grid needs. Accelerating regional transmission projects is also necessary.
Aligning incentives so that data centers contribute to grid resilience is important. Utilities, policymakers, and industry players must collaborate to modernize the grid.
This includes integrating renewables, storage, and demand-response resources. It also ensures that the costs of growth are allocated fairly.
Here is the source article for this story: Winter storms underscore data center threats to grid reliability, affordability