Data Center Power Costs in NC: Will Households Pay More?

North Carolina’s Data Center Grid Dilemma: Why Households Fear They’ll Pay for AI’s Power Hunger

From the road, a giant windowless data center can pass for just another warehouse. Then you hear the numbers. These buildings run around the clock, drawing power like a small city. In WRAL’s investigation, reporter Dan Haggerty says the largest projects, including Microsoft’s proposal in Person County, could use as much electricity as 500,000 homes, roughly “about as much juice as the entire city of Raleigh.”

That scale is why North Carolina’s data center rush has become less about shiny technology and more about a kitchen-table question:

Will residents end up paying for a gigantic electric grid for technology no one asked for?

While companies promise to “pay their own way,” the structure of electric rates shows families can still get stuck with infrastructure costs when utilities expand the system to serve city-sized loads.

The Questionable Part of Your Duke Energy Bill

Only part of an electric bill is tied to the number of kilowatt-hours you use. The rest is bundled into the rate itself, including the costs of power plants, poles and lines, substations, past and future construction projects, and returns for investors. Every customer on the grid shares that infrastructure cost, whether it is a home, a grocery store, or new data center.

In North Carolina, those big infrastructure costs are typically reviewed in utility rate cases at the North Carolina Utilities Commission, which decides what Duke Energy can charge and how costs get spread across different customer classes.

That’s why a surge in demand from a new mega-data center matters even if you never set foot near it. When a data center needs the electricity of a city, utilities may need new infrastructure. The question is: who should pay for it?

“Pay Their Own Way” vs. “Pay for the Grid”: The Driveway-Highway Problem

Microsoft says it will “pay its own way” so its Person County project does not increase electricity prices. WRAL then explains what that often means in practice: the company pays for the power it uses and for the wires and substation connected directly to its facility, not the broader grid expansion needed to serve its project or a wave of similar projects.

Haggerty uses a comparison that sticks: building a house means you pay for the driveway. But if traffic means wider highways, everybody pays for the highway.

Here’s the split that drives the debate. Large customers often pay for the equipment that connects their site to the grid, but wider “network” upgrades can still end up being shared unless regulators require stronger guardrails.

For households, this is the heart of the fear. The data center can be responsible for its direct connection, while ratepayers still share the cost of system upgrades that make the whole network capable of serving massive, steady loads.

Duke Energy’s Forecast and the “Uncharted Territory” Warning

Haggerty points to the North Carolina Energy Policy Task Force report and highlights two striking admissions. First: the report says there is not reliable public data for the total number and size of existing and proposed data centers, a planning problem in itself. Second: Haggerty describes Duke Energy’s 15-year load forecast as ranging from 16% to 60% growth, with the report stating data centers could account for 80% of all projected energy demand.

If those projections land anywhere near the high end, North Carolina is not just adding load. It is reorganizing the grid around one industry.

Why Data Centers Weren’t a Big Fight Before, and Why They Are Now

For years, data centers remained in the background. They were smaller, grew more slowly, and the grid usually had enough slack to absorb them. A region could add a few facilities without needing a new substation right away or a major transmission project soon after.

What changed is the scale and the speed. Cloud computing expanded, then AI accelerated demand even further. New projects can be measured in tens or hundreds of megawatts, and they tend to cluster where land is cheap, incentives are available, and fiber is close. When several land in the same area, the utility is not just serving one building; it is planning for a whole new layer of demand, and the upgrades can take years.

The other shift is awareness. People hear comparisons like “as much electricity as 500,000 homes,” then look at their bill. They also see the staffing numbers and wonder if the job payoff matches the power demand. That mix is why a niche planning topic has become a household issue.

Siemens Expansion Signals More Data Center Growth Ahead

Siemens’ expansion across the Carolinas is a leading indicator that the data center buildout is just getting started.
Siemens is in the news lately about expanding its factory footprint, but it's not building “AI data centers." It’s building out manufacturing facilities that make the electrical gear data centers depend on. In Raleigh, Siemens plans a 131,000-square-foot site assembling integrated power delivery solutions. The company says it will add 100 jobs by the end of 2026.
In South Carolina, Siemens says it will open a 120,000-square-foot facility in Spartanburg for lighting panel production and distribution, and expand busway production in Roebuck by 22,000 square feet. Together, those projects add 150 manufacturing jobs in Spartanburg County.
In plain language: Siemens is building the power-hardware supply chain behind the AI boom, and the business of new AI facilities is booming.

“Can’t I Just Buy Efficient Appliances?” Why Households Can’t Conserve Their Way Out of Rising Rates

One of the most frustrating parts for homeowners is that conserving electricity does not fully insulate them from systemwide grid spending. You can cut kilowatt-hours, but you still pay the embedded infrastructure costs bundled into the rate.

That is why there is no realistic “appliance fix” that offsets a broad rate increase tied to grid expansion. Even families who upgrade HVAC, improve insulation, or replace appliances still pay for transmission, substations, and grid modernization that are recovered through rates.

What Other Regions Show: How Data Center Growth Can Show Up in Family Bills

Residents of North Carolina are not the only ones wrestling with rising utility costs.

In Virginia, the State Corporation Commission approved Dominion Energy rate increases that add about $11.24 per month in 2026 for a typical residential customer, with another $2.36 per month in 2027. The increases were not labeled “because of data centers,” but the cost-allocation fight has been sharpened by Northern Virginia’s data center-driven load growth.

In Georgia, analysts and PSC staff have warned that utility expansion tied to rapid load growth, including data centers, could translate into residential bill increases on the order of $20 or more per month if buildout plans proceed.

In Arizona, Tucson Electric Power has sought a 14% rate increase, with residents and reporters raising questions about how new data centers could add pressure to upgrade costs that flow into customer bills.

Even in Ireland, regulators tightened rules as data centers’ electricity demand surged. RTÉ reported that in 2024 about 50% of metered electricity consumption in the Dublin and Meath region was attributable to data centers, intensifying concerns about constraints and who bears the costs of reliability.

The Risks: A Bigger-Than-Needed Grid if Demand Drops

Haggerty also points to a less obvious risk. Utilities could spend billions expanding the grid for data centers, then demand could soften if companies improve chips, cooling systems, and software, or if a wave of projects gets shelved. In that scenario, households could be left helping pay for infrastructure sized for a peak that never fully arrives.

Duke Energy says it has safeguards, including long-term contracts, deposits, and minimum power agreements designed to protect customers if large users scale back.

The argument now is not whether AI is coming. It is how North Carolina builds the backbone for it without leaving families holding the bag.

What North Carolina Is Watching Next: More Data Centers, More Local Pushback, More Cost Questions

Haggerty’s report lists examples of communities pushing back, including a project in Apex that withdrew after opposition, disputes in Edgecombe County, and a moratorium in Chatham County. Meanwhile, Microsoft’s Person County plans advanced after the company bought 1,300 acres and opened permits, WRAL reports.

In Southeastern North Carolina, Brunswick County is seeing the same anxiety and trying to get ahead of it, but the approach is uneven. The county’s baseline rules, adopted in 2023, allow data centers by-right in certain industrial zones, which means no public hearing if the project meets the ordinance requirements. But inside Brunswick, towns are starting to add tighter guardrails aimed directly at power demand. In Leland, the planning board has recommended rules that would require data centers to meet at least 60% of their energy needs through on-site renewables or renewable power purchase agreements, plus ongoing reporting to verify compliance.

That mix of resistance and momentum is exactly why Siemens’ Raleigh factory matters as a marker. Even as counties debate whether they want data centers, the supply chain is already moving in, built around one central assumption: North Carolina will need far more electrical infrastructure than it has today.

For households, the best preparation is not a new appliance. It is watching what comes next in utility filings and local debates. When Duke makes its case for new spending, residents can ask a few basic questions: Are large users locked into long-term contracts? Are they posting deposits or guarantees that protect customers if projects stall? And are grid upgrades being assigned to the projects that trigger them, or rolled into rates for everyone?

For households, the question remains simple and stubborn: if the grid has to grow to serve city-sized customers, how much of the bill ends up in your mailbox?