On-site and behind-the-meter generation plant

Why the concentration exists

On-site and behind-the-meter generation means electricity produced by equipment physically installed at or adjacent to a data center campus, with no export through the public grid interconnection that a typical utility customer would use. Operators turn to this option because grid connection wait times have lengthened dramatically, with major US hubs now stretching 7 to 10 years. Interconnection queues of that length force developers to fund their own turbines, fuel cells, or storage rather than wait for a transformer. Behind-the-meter designs also bypass utility-side upfront charges, because multi-million dollar capacity deposits per MW and load-study fees are no longer payable when the project never enters the utility queue.[2][3]

The technology set used on-site is wider than gas turbines alone. Active behind-the-meter technologies include natural gas turbines and combustion engines, fuel cells, solar with battery energy storage systems, and co-located or campus-adjacent power plants. The choice between them is driven by lead time and fuel availability, and operators now routinely compare options across that matrix. The decision is constrained by permitting, gas pipeline access, and air emissions thresholds, which is why developers need gas pipeline maps, emissions thresholds, and equipment lead times alongside utility filings before committing.[3][7]

What the evidence shows

Who supplies it

Large-frame gas turbine original equipment makers dominate the heavy end of the behind-the-meter market. GE Vernova and Mitsubishi Power are described as chief competitors in the large-frame gas turbine market, with GE Vernova's 9HA marketed as an H-class industry leader and the heart of the world's most efficient combined-cycle power plant. Siemens Energy sells heavy-duty power plants up to 2,000 MW and offers OEM EPC procurement from components through turnkey plants. GE Vernova also sells mobile and aeroderivative units for smaller sites, including the TM2500 for emergency power with over 300 units installed and the LM2500XPRESS and LM6000VELOX for fast behind-the-meter deployment.[1][6][5][15]

The broader US supply base is fragmented beyond the three large-frame OEMs. A 2025 directory of US power generation equipment manufacturers lists 43 firms, ranging from specialized synchronous generator fabricators to providers of complete combined cycle power plants. Below the top tier, developers such as Unison Energy build combined heat and power microgrids that achieve 60 to 80 percent efficiency, and Williams is building onsite natural gas generation for Meta's Ohio campus under a July 2025 regulatory approval. Behind-the-meter OEMs overall, including fuel cell and aeroderivative vendors, are estimated by Jefferies to be 65 percent booked for 2028 and roughly 33 percent booked for 2029, well below the large-frame OEMs but rising fast.[4][18][23][14]

What it depends on, and what depends on it

On-site and behind-the-meter generation sits between fuel supply and the data center load it serves. The dominant fuel is natural gas, with EIR estimating that a 1 GW data center consumes approximately 140 million cubic feet per day, less than 1 percent of Appalachia's daily production. The output side feeds hyperscale and AI campuses that Bloom Energy's 2026 survey expects to scale toward gigawatt-size AI factories, with about one in five campuses expected to exceed 1 GW by 2030. Inside that envelope, behind-the-meter systems are expected to provide a quarter to a third of incremental data center electricity demand through 2030, with up to 25 GW of behind-the-meter generation expected to be deployed over the five years from 2025.[22][17][21][3]

Behind-the-meter assets are also beginning to act back on the grid. Virtual power plants aggregating on-site generation can offset expensive peaker plants, and Fluence installed a 2.75 MW battery energy storage system at Google's St. Ghislain data center in Belgium in 2022 as one of the earliest behind-the-meter storage examples. The US had only 30 to 60 GW of virtual power plant capacity as of 2023, but the Department of Energy estimates the country will need between 80 and 160 GW of additional capacity by 2030, much of it sourced from behind-the-meter distributed energy resources. That dual role, as both private primary supply and aggregated grid resource, is now structurally embedded in the segment.[8][13][12]

Where it sits in the stack

What would break it

The clearest stress point is OEM capacity, where bookings are running ahead of supply. Jefferies expects at least 19 GW of total available gas equipment capacity by 2028, increasing to 49 GW by 2029 and 76 GW by 2030. The same outlook has large-frame turbine OEMs over 90 percent booked for 2028 and over 70 percent booked for 2029, with behind-the-meter OEMs at 65 percent and roughly 33 percent for the same years. Gas turbine lead times are now reported to stretch past 2029, prompting cancellations of major US gas projects even as GE Vernova's turbine bookings jumped 66 percent year-over-year.[14][24]

Manufacturers are not expanding capacity in response. GE Vernova announced a $50 million investment and approximately 200 new manufacturing assembly employees at its Schenectady facility for onshore wind turbines, not for gas turbines, and analysts note that OEMs are not adding capacity because of uncertainty in long-term demand. RAND estimates currently planned nameplate resource additions will reach 149 GW of behind-the-meter generation capacity by 2030, adding about 49 GW of net available capacity to reduce grid peak loads. If planned additions actually land, that total would absorb a large share of the OEM book described above, leaving little buffer for late orders.[16][11][24]

Policy and regulatory changes can disrupt the economics of self-generation. Texas passed Senate Bill 6 in June 2025, which requires data centers to cover transmission and distribution grid costs, disclose backup power supply, and prepare for curtailment. Oklahoma state lawmakers passed a bill in 2025 to let companies build their own power, and Dominion Power told customers in Virginia that it could not meet data center power demand, delaying projects by years. In Europe, Ireland data centers use around 10 percent of available electricity and Singapore data centers use 7 percent while 94 percent of the country's grid runs on fossil fuels, which limits how far on-site fossil generation can grow without violating decarbonization commitments.[18][23][9]

What to watch

Surveys point to a rapid shift in primary-power reliance. Bloom Energy's 2026 data center survey found that more than one-third of data centers are expected to use 100 percent on-site power by 2030, and a separate Bloom survey found 27 percent of data centers expected to rely entirely on onsite generation for primary power by 2030, up from 1 percent a year earlier. A March 2026 Bloom survey indicates that time-to-power now runs roughly 1.5 to 2 years longer than previously expected. Cleanview's early 2026 report identifies 46 planned US data centers, about 30 percent of planned US capacity, intending to generate their own power.[17][10][19][20]

Related nodes

On the plate

Sources

1. gevernova.com
2. bricks-bytes.com · 2026-04-17T17:10:18
3. datacenterhawk.com
4. kokoquest.com
5. siemens-energy.com
6. power-eng.com · 2026-05-28T16:18:34
7. build.inc · 2026-05-06T00:00:00
8. enelnorthamerica.com
9. datacenterdynamics.com · September 15, 2023
10. powermag.com
11. rand.org · 2030
12. powermag.com · 2023
13. powermag.com · 2022
14. utilitydive.com · Feb. 24, 2026
15. gevernova.com
16. ge.com · May 23, 2023
17. greengasturbines.com · 2026
18. unisonenergy.com · June 2025
19. datacenterknowledge.com · April 15, 2026
20. milkeninstitute.org · 2024
21. goldmansachs.com · 2025-11-25
22. enverus.com
23. techinvestments.io · July 2025
24. credaily.com · March 27, 2025