On March 4, 2026, seven technology companies signed onto a Ratepayer Protection Pledge at the White House. They announced a “guarantee that data centers’ energy needs will not increase household electricity costs for American citizens.” While bold, the pledge does not change state or federal policy directly. Regardless, it serves as a constructive signpost for data center companies, policymakers, ratepayer advocates and other stakeholders that are negotiating and implementing solutions.
While observers have already raised implementation questions, engagement with the issues raised by the pledge is critical because household energy bills could be significantly impacted. Every jurisdiction must thoughtfully analyze these issues because the underlying issues change from region to region and state to state. Affordable electricity is crucial not only for families, but for the entire economy. We should focus on transmission and generation supply costs, which make up the bulk of residential electricity rates in most places. Data centers rarely impact distribution costs because every significant data center connects at the higher-voltage transmission level.
These companies will have a difficult time living up to such a guarantee. Strong evidence suggests that data centers are already increasing household costs in one region of the country, the fully restructured jurisdictions of PJM Interconnection (PJM), which include New Jersey, Pennsylvania, Delaware, Maryland, Ohio, northern Illinois and Washington, D.C.. In those places, the default generation supply rates for residential customers show clear signs of the impact of large load growth. This is because of the recent increases in capacity market prices and costs as shown in the chart below. The PJM internal market monitor highlighted that a significant portion of these increases can be attributed to current and projected data center load growth.
In fully restructured jurisdictions in PJM, these capacity market price increases flow directly into rates for customers on default supply service. Any impacts on residential customers from transmission cost increases in PJM due to data centers would be in addition.
State policies for the procurement of default generation service determine the details and timing of how capacity market price increases flow into retail rates. For example, on June 1, 2025, residential electricity rates for default generation supply in the Chicago area went up to about 10 cents per kWh. That represents a 3 cent per kWh increase from the previous June, which roughly translates to an extra $100-200 per year for most residential customers. As noted by the electric distribution utility ComEd, this was primarily due to the previous year’s capacity market auction run by PJM for 2025/26 – the first major price spike shown in the chart above.
No one should blame residential customer rate impacts in these PJM jurisdictions solely on data centers. In particular, data centers are not responsible for many of the structural factors that have led to the current capacity market dynamics in PJM. Slow permitting timelines and long interconnection queues in PJM have been an issue for years. PJM changed generation accreditation and other capacity market rules in an expedited manner, which has caused disputes, lawsuits and delays in the capacity market auction processes. This uncertainty has inhibited customer and market responses to price increases. The resulting steep supply cost curve in parallel with projected load growth explains the major capacity market price increases.
Wholesale markets and regulatory restructuring generally should not be scapegoats either. Vertical integration of electric utilities poses different kinds of risks to customers going forward in an environment of projected load growth. Much of the country experienced the downsides of vertical integration in the 1980s, when projections of major load growth failed to materialize.
Assigning blame for cost increases is rarely simple, and major new phenomena like data center load growth will inevitably expose weaknesses in current regulatory structures. To be taken seriously, the message of the ratepayer protection pledge requires sorting through these issues. In subsequent posts, we will explore the toolbox of potential solutions– both existing under current law and potential innovations. Utility commissions have held numerous data center proceedings over the last two years, often initiated by specific data center rate proposals from electric utilities. Although the solutions specifically related to data centers raised in these proceedings will be helpful, broader structural change cannot be ignored. Systemic fixes will be necessary to build a 21st century regulatory system.
