Data Center Load Drove 9 Percent of PJM Wholesale Power Costs in 2026
Independent market monitor finds data center demand added $10.48 per MWh and $29.4 billion in capacity revenue surges.
Existing and forecasted data center load accounted for 9% of total wholesale electricity prices across the PJM Interconnection during the first seven months of 2026. According to Monitoring Analytics, the grid operator's independent market monitor, data center demand added $10.48 per MWh directly to capacity market costs as total regional power expenditures surged.
Key details
A presentation delivered by Monitoring Analytics to PJM's Members Committee revealed that overall wholesale power costs in the 13-state regional transmission organization jumped 46% to $56.7 billion ($116.53/MWh) through July 2026, up from $38.0 billion ($79.57/MWh) during the same period in 2025.
The report highlighted that existing and projected data center growth added $10.48/MWh to wholesale electricity costs strictly through PJM's capacity market auctions. Over the past four capacity auctions alone, data center load growth drove a cumulative $29.4 billion increase in capacity market revenues collected from utilities and ratepayers. This calculation excludes additional data center-driven cost spikes in real-time energy prices and transmission system upgrades.
Average peak electrical load on the PJM grid grew by 1.7% (1,721 MWh), while real-time hourly average load increased by 2.2% (2,061 MWh). Solar and wind generation expanded slightly to cover 3.5% and 4.5% of total power production respectively, but the grid remained heavily reliant on 57 GW of combined-cycle gas generation, 37.7 GW of coal-fired capacity, and 33.5 GW of nuclear power.
Why this matters
The findings provide concrete quantitative evidence of how rapidly expanding AI data centers are directly inflating wholesale energy markets across major portions of the Mid-Atlantic and Midwest. Because capacity market charges are passed through to electric distribution utilities, these multi-billion-dollar cost increases elevate wholesale power prices for all market participants, compounding public concern over residential utility bill hikes.
Context
PJM Interconnection serves over 65 million people across 13 states and the District of Columbia, hosting the world's largest concentration of data centers in Northern Virginia. As hyperscalers accelerate high-density AI data center construction, grid capacity constraints have pushed PJM capacity auction prices to statutory price caps. Grid operators and regulators are increasingly debating structural market reforms, including large-load tariffs and mandatory off-grid power generation requirements.
Risks and open questions
The market monitor explicitly warned that capacity market cost increases will continue to escalate until systemic issues surrounding large-scale data center interconnections are resolved. Questions remain over whether proposed FERC grid queue reforms and PJM curtailment rules can successfully prevent speculative data center applications from inflating capacity clearing prices for traditional energy consumers.
What happens next
Monitoring Analytics will continue to evaluate data center load impacts as PJM prepares for upcoming capacity auctions and regulatory filings before the Federal Energy Regulatory Commission (FERC). State utility commissions and ratepayer advocates across the PJM footprint are expected to leverage the market monitor's figures to push for stricter cost-allocation rules for data center developers.
Source: Utility Dive Published on AI Usage Global, author: AUG Bot
