FREDERICK COUNTY, Md. — A federal proposal aimed at preventing residential electric customers from absorbing infrastructure costs created by large data centers is moving through Congress as Frederick County weighs the future of an industry that could dramatically increase local electricity demand.
The U.S. House passed the Ratepayer Protection Act, H.R. 9340, by a 417-3 vote on Sept. 16. The legislation would establish a federal standard under which certain large data centers would be expected to cover the full incremental cost of generation, transmission and distribution upgrades required to serve them.
The proposal applies to data center facilities or campuses with peak electric demand of at least 100 megawatts. Under the House-passed text, utilities would also require financial assurances or contributions before undertaking upgrades needed to serve those customers.
For Frederick County residents, the legislation is relevant because the county has become one of Maryland's most closely watched battlegrounds over large-scale data center development.
But the bill would not automatically lower anyone's electric bill, and it is not yet law.
What the federal bill would actually do
Rather than directly setting electricity rates nationwide, the Ratepayer Protection Act would amend the federal Public Utility Regulatory Policies Act and require state utility regulators to consider the new cost-recovery standard.
State regulators would generally have one year after enactment to begin considering the standard and two years to make a determination. The legislation also provides exceptions where a state has already implemented, considered or voted on a comparable policy.
That distinction matters in Maryland, which has already adopted its own rules aimed at protecting residential customers from the costs associated with very large electricity users.
Maryland law states that residential electric customers should not bear the financial risks associated with large-load customers connecting to the state's electric system. The state has also required utilities to develop special rate schedules for large-load customers.
The state's 2026 Utility RELIEF Act went further, lowering the threshold for certain large-load protections and creating a registry for major electricity users. Maryland legislative analysts said the law lowered the mandatory large-load rate threshold from 100 megawatts to 25 megawatts, subject to additional requirements and exemptions.
Because Maryland has already acted, the precise additional effect of the federal legislation would depend on how federal and state regulators determine whether Maryland's existing framework is comparable to the proposed federal standard.
Why electricity costs are part of the Frederick County debate
The Maryland Office of People's Counsel, an independent state agency representing residential utility customers, has repeatedly warned that rapidly growing data center electricity demand can affect costs even in communities where the facilities themselves are located elsewhere.
The agency says data center growth is contributing to higher costs through three major parts of the electric system: generation capacity, transmission infrastructure and wholesale energy prices.
In May, the office challenged regional transmission rules that it said had assigned Maryland customers responsibility for approximately $2 billion in transmission capital costs, much of it associated with infrastructure needed to accommodate data center demand. The agency estimated those costs could increase Maryland customer bills by about $1.6 billion over the following decade. Those figures represent the consumer advocate's analysis and are part of an ongoing regulatory dispute.
The issue extends beyond data centers proposed inside Maryland. Frederick County is part of the PJM Interconnection regional electric grid, which serves a large section of the Mid-Atlantic and Midwest. Infrastructure built to accommodate massive electricity demand elsewhere in the region can therefore influence costs allocated across state lines.
In August, Maryland's Office of People's Counsel urged state regulators to take additional action before PJM committed customers to hundreds of millions of dollars in costs associated with projected data center growth.
Frederick County has paused new projects
The federal debate comes just days after another major development in Frederick County.
On Sept. 14, County Executive Jessica Fitzwater rejected Catellus' application for a Development Rights and Responsibilities Agreement connected to the proposed Frederick Digital Campus in Adamstown. She also extended the county's pause on new data center applications through July 1, 2027.
Frederick County is currently not accepting new applications for data center developments. County officials have said the pause is intended to allow additional study of the industry's effects before more projects move forward.
The county's authority over electricity itself is limited. Frederick County says Maryland law leaves regulation of electric generation and transmission primarily to the General Assembly and the Maryland Public Service Commission. Local officials instead exercise authority over issues including land use, zoning and development requirements.
That makes decisions in Annapolis, at the regional grid level and potentially in Washington especially important to Frederick County residents concerned about the financial effects of data center growth.
The legislation still faces the Senate
The Ratepayer Protection Act has not completed the legislative process.
An attempt to move the measure quickly through the Senate was blocked this week by Sen. Martin Heinrich, D-N.M., who argued that the House proposal does not go far enough because it requires states to consider the standard rather than automatically imposing it. Supporters of the House bill contend that it would create a national framework while preserving the traditional role of state utility regulators.
President Donald Trump said Friday that he was discussing the legislation with Senate Majority Leader John Thune as the administration pushes both expansion of U.S. artificial intelligence infrastructure and measures intended to keep data center costs from being shifted to households.
The Senate would still need to approve legislation before it could reach the president for signature.
What Frederick County residents should watch
For local households, there is no immediate change to electric bills because of the House vote.
The more consequential developments will be whether the Senate advances the federal legislation, how Maryland's Public Service Commission implements the state's existing large-load rules, and how PJM allocates the cost of new generation and transmission infrastructure across its regional grid.
Frederick County's pause on new data center applications also means the local development picture remains unsettled through at least July 2027.
The larger question facing regulators at each level is increasingly the same: as data centers require enormous new amounts of electricity, which customers should ultimately pay for the infrastructure needed to serve them?