Google's 1-GW demand-response build pushes deeper into PJM as data-centre load climbs

Google's 1-GW demand-response build pushes deeper into PJM as data-centre load climbs Google now holds 1 GW of curtailable capacity and ran an internal siting tool through PJM's reformed queue, as hyperscalers race to lock in flexible power. Google disclosed on Thursday (2026-06-04) that it had reached 1 GW of demand-response capacity under long-term contracts with utilities including Indiana Michigan Power, the Tennessee Valley Authority, Entergy Arkansas, Minnesota Power and DTE Energy, capacity that lets it curtail or shift compute workloads during peak periods. The same disclosure detailed a co-located data centre and generation complex of more than 1 GW in the Texas Panhandle.⁵ That matters because the contracts turn Google's sites into a source of grid flexibility rather than pure load. For an operator staring at unprecedented demand growth, a hyperscaler that can step back during the tightest hours is worth more than one that only consumes.⁵ The disclosure also tied Google more tightly to PJM Interconnection, the largest US grid. The company said an internal siting tool was used in PJM's first reformed queue cycle, which drew 811 projects totalling 220 GW of proposed capacity.⁵ Google has separately signed a hydropower framework with Brookfield to upgrade and relicense two Susquehanna River dams in Pennsylvania, inside PJM's footprint, the first contracts under a broader arrangement contemplating up to 3 GW of hydropower nationally. Across all instruments the company says it has contracted more than 22 GW of clean energy since 2010, including 115 MW of enhanced geothermal in Nevada.⁵ The push reflects how fast data-centre load is rising. Data centres used about 4.6% of total US electricity in 2024, a share government estimates suggest could nearly triple by 2028.¹ Some analysts see nationwide electricity use climbing as much as 20% over the next decade, with data centres a large part of the reason.¹ PJM itself has projected summer peak demand in the Dominion Energy zone, which covers Northern Virginia's Data Center Alley, to grow 5.4% a year over the next decade. Because hyperscale sites run continuously at high load factors, winter peaks rise too, at roughly 4% a year.² The flexibility drive sits awkwardly against the climate targets these firms once set. Google's emissions have jumped nearly 50%; Amazon's rose 33%, Microsoft's more than 23% and Meta's more than 60%.¹ Six years ago Google expected to run entirely on clean power by 2030. As of 2026-05-19 it called that a moonshot.¹ Spot prices show why curtailable load is prized. PJM's Western Hub traded around $61.48/MWh on Sunday (2026-06-07), and the value of demand response concentrates in the hours when prices spike, not the average. Securing that flexibility ahead of the load build matters more than the headline megawatts. The directional read on PJM is not one-sided. Demand response adds firm consumption while also supplying relief at the margin, and EnergyReader's signal tracking on PJM real-time shows bullish and bearish weight roughly balanced rather than tilting one way. The scramble for scale runs through the utilities as well. NextEra Energy agreed on 18 May (2026-05-18) to buy Dominion in an all-stock deal valued at $66.8 billion, the largest power-utility acquisition on record and one framed explicitly around data-centre growth in Dominion's PJM territory.^4,2 Deloitte analysts have argued that scale is becoming increasingly critical for utilities to compete, access capital and execute transactions.³ For now, much of Google's commitment is contractual rather than tested. Demand-response capacity is easy to announce and harder to call on, and curtailing compute conflicts with the business reason the data centres exist.⁵ The test comes the first time PJM is genuinely short this summer and asks data centres to back down while their own compute demand is also peaking. Watch how much of the 220 GW queue actually clears interconnection, and whether Google's 1 GW of curtailable load shows up in the capacity numbers when the grid needs it rather than only in the press release.^5,2