When grid queues stretched past five years, developers turned to on-site generation. Now the same developers are discovering that the equipment itself has a queue. The question for a VP of Data Center Development is no longer whether behind-the-meter (BTM) gas is faster than a transmission interconnection. It is which BTM technology can actually be delivered inside the program schedule.
The lead-time ladder
According to a September 28, 2026 analysis in Pipeline & Gas Journal, large combined-cycle gas plants now carry lead times of up to 6 years, small and medium frame turbines can be delivered within 2 years, and aeroderivative units run about 40 months. The same analysis projects 29.6 GW of BTM gas generation in the United States through 2030, with data centers representing roughly 88 percent of that demand.
The fact worth carrying into a board deck: large combined-cycle gas plants are quoted at up to 6 years from order to delivery, small and medium frame turbines at under 2 years, and aeroderivatives at roughly 40 months, so the equipment class chosen can move a power date by years before any construction begins.
Why BTM demand is outrunning supply
Cleanview's behind-the-meter data center report counts 59 BTM data center projects with about 90 GW of announced capacity, or 25 percent of all planned US data center capacity. Of that, 92 percent (82 GW) was announced since January 2025. Only about 2 GW is operating, roughly 2.2 percent of the total, and Cleanview expects 2.8 to 3.2 GW online by the end of 2026.
That gap between announcement and operation is the story. Ninety GW of ambition sits against a small number of turbine and engine factories. Five states hold 83 percent of proposed BTM capacity, with Texas leading by a wide margin, while Ohio leads under-construction capacity at 736 MW from Meta and EdgeConneX projects.
The cost of choosing speed
Speed has a price. Pipeline & Gas Journal reports that capital cost per unit of electricity can run up to 50 percent higher for smaller turbines than for larger ones. A developer who picks aeroderivatives or reciprocating engines to avoid a 6-year wait is paying for schedule, and should model it that way rather than discovering it in the first year of operation.
Procurement behavior reflects the trade. Crusoe Energy ordered 29 GE Vernova 35 MW aeroderivative turbines, 10 of them for its Abilene, Texas campus, and is procuring about 750 MW of Bergen reciprocating engines, per the same report. That is a deliberate mix: several equipment families, several supplier queues, one load. Cleanview data shows Caterpillar supplying 33 percent of tracked BTM projects (8.8+ GW) and Bloom Energy 14 percent.
Supply is expanding, but not on your timeline
Manufacturers are adding capacity. GE Vernova plans a $160 million investment in Greenville, South Carolina by 2028, adding 650 workers, and Siemens Energy is restarting a Charlotte, North Carolina factory by 2028. Both land after most projects now being sited will have placed their orders. For a load needing power in 2028 or 2029, the relevant supply is what is already in a manufacturer's production slots, not what is being built.
The regulatory clock runs in parallel
Equipment is only one of two clocks. On June 18, 2026, FERC issued six Section 206 show cause orders, one each to PJM, MISO, SPP, CAISO, ISO-NE, and NYISO, requiring each to justify or revise its large-load interconnection rules, as summarized by Duane Morris. Those proceedings will reshape how co-located and BTM generation is treated at the grid edge. A project that locks equipment but not its interconnection posture has solved half the problem. Our comparison of grid interconnection versus BTM covers the permitting side in more depth.
What to do with this
Three adjustments follow for teams judged on time-to-power. First, reserve equipment early and treat the slot as the asset. A turbine position is worth more than a parcel that has no delivery date attached to it. Second, diversify the equipment mix. Phasing aeroderivatives or reciprocating engines first, with larger frames following, converts a single 6-year dependency into staged capacity. Third, ask every developer for the delivery documents, not the announcement: purchase orders, slot confirmations, and the commissioning schedule.
That is how Smartland Energy structures dedicated BTM capacity for data centers and industrial loads, with equipment and permits assembled so power can be online in ~24 months from Notice to Proceed rather than waiting on a 5+ year queue.
The era of treating BTM gas as an unconstrained shortcut is over. It remains the fastest credible path to firm power at scale, but only for buyers who underwrite the equipment queue as carefully as they once underwrote the interconnection queue. Reserve capacity →