The Impact of AI Data Centers on Electricity Costs: A Complex Debate
As the midterm elections approach, Congress is under pressure to address voter concerns regarding AI data centers and their potential effects on electricity bills. The issue of determining how much residential customers will bear the financial burden is proving to be a challenging one.
This uncertainty is fueling an intense debate in Washington, with lawmakers proposing different measures to safeguard ratepayers amidst the complex economic landscape.
This week, Republican lawmakers are advancing the Ratepayer Protection Act, introduced by Ohio Republican Sen. Jon Husted. The act suggests that state utilities consider imposing increased costs on “large-load” customers.
Husted, facing a tough reelection campaign against Democrat Sherrod Brown, who lost his Senate seat in 2024, has made data center support a central campaign issue. The bill received strong bipartisan support and passed the House in September.
Senate Minority Leader Sen. Chuck Schumer opposes the act, arguing that its protections are voluntary. Instead, he backs the GRID Savings Act, which he claims is more robust, authored by Democrat Sen. Martin Heinrich from New Mexico.
Other legislative proposals related to data centers and AI are also under consideration.
The Financial Burden on Customers
Experts say that the extent to which energy and grid costs affect ratepayers varies significantly. While the specifics depend on utilities and states, residential customers will undoubtedly bear some of the financial burden from AI expansions.
In Maryland, for instance, customers reportedly pay an additional $168 to $216 annually on their electricity bills due to the data center growth, according to one estimate.
“We’re talking tens to hundreds of millions of dollars [of infrastructure] that are being built by these local utilities,” says Connor Waldoch, co-founder and chief strategy officer at Grid Status. “In many cases, it is just ultimately going to end up in customers’ bills.”
Tracking the Costs
Monitoring how data center growth impacts residential bills is not straightforward. Lucy Qiu from the University of Maryland explains that the pass-through costs to residential customers depend on several factors, such as utilities’ power-purchasing agreements and regulatory decisions.
PJM, a regional transmission organization, coordinates electricity grids across 13 states and the District of Columbia. Their Independent Market Monitor estimates that data centers have cost their 67 million ratepayers approximately $29 billion over the past two years.
“Everyone pays those costs,” states Ari Peskoe, director of the Harvard Electricity Law Initiative. “They’re spread across the region to every business and resident that has an electricity meter.”
Who Benefits from the Infrastructure?
As data centers drive up energy demand, it affects how much generating capacity utilities must secure. There are also costs associated with connecting data centers to the grid. Determining the extent to which these costs exclusively benefit data centers is part of the challenge, explains Qiu.
“It really depends on the scale of the upgrade and also how utilities are doing the accounting,” Qiu says.
Confidentiality Concerns
According to Peskoe, finding “a single, clean number” for data center-related costs nationwide is difficult due to non-disclosure agreements (NDAs) that conceal much of the financial data. These NDAs have sparked local controversies as residents criticize the secrecy surrounding data center deals.
A study found that NDAs were signed in 80% of Virginia localities with data centers.
Urgency and Costs
The rapid expansion of the data center industry is another factor. The urgency means that utilities may resort to less efficient power plants, incurring further costs to consumers, according to Qiu.
Waldoch adds that large customers like AI data centers often pay less per kilowatt-hour than residential customers, a situation likely to be unpopular given public concerns about rising electricity bills.
Beyond Immediate Costs
Not all recent price hikes are attributable to data centers, says Qiu. Other factors like fuel costs and infrastructure replacements due to extreme weather also play a role.
The AI boom could expedite necessary grid upgrades, Qiu notes. Additionally, data centers can enhance grid reliability, reducing power outages for nearby residents, she says.
