Data-center load represented 9% of PJM wholesale costs during 2026; total costs rose 46% to $56.7 billion.

Data-center electricity load accounted for 9% of wholesale costs in the PJM Interconnection so far in 2026, according to the grid operator’s market monitor. PJM operates a regional wholesale electricity market rather than an individual utility or data-center campus.

Total PJM wholesale power costs increased 46% to $56.7 billion over the period covered by the report. The market monitor attributed the overall increase to rising energy and capacity costs.

The 9% figure concerns the share of wholesale costs associated with data-center load, not data centers’ share of installed generation capacity. The source does not translate the percentage into gigawatts of data-center demand or identify individual operators.