Finding
Gas turbines are now as scarce as transformers
Data centers turned natural gas from a bridge fuel into the fastest firm power a developer can buy - if it can get a turbine. GE Vernova closed mid-2026 with 116 GW of gas backlog and reservations and is selling 2031 delivery slots; Siemens Energy held 69 GW and Mitsubishi Power 35 GW. Wood Mackenzie counts about 110 GW of orders against 60-70 GW of yearly factory output and projects prices up 195% from 2019 to 2027.
More than 60% of Siemens Energy's recent US turbine orders are tied to data centers. Gas capacity in US interconnection queues rose 86% in 2025 to 253 GW (LBNL), while solar, storage and wind in the queues fell. Developers who cannot wait are turning to aeroderivative turbines, reciprocating engines and fuel cells on site, behind the meter, to skip both the turbine line and the grid queue.
Gas also sits under much of the rest of electrification: combined heat and power at campuses and plants, backup at depots and fabs, and the peakers that cover evenings when solar fades. Its limit for the next five years is equipment, not fuel.
Inside the turbine
The bottleneck is the blade casting
The slowest part of a large gas turbine is its hot section: single-crystal nickel-superalloy blades and vanes that only three or four foundries worldwide can cast at large-frame size. Their order books reportedly run to 2029-2030, and the casting queue alone can stretch a 24-month turbine delivery to 36-42 months.
That is why SpaceX is building its own gas turbine blade and vane foundry at its Bastrop, Texas complex, on about 830 acres beside its Starlink factory. Elon Musk confirmed the project in August 2026, called casting "the limiting factor" for turbine production, and said it could bring turbines online up to 18 months sooner. The first customer is SpaceX itself, for the gas-fired power behind its and xAI's data centers; permits were pending as of September 2026.
Equipment
Gas generation by type
| Type | Size | Examples | Notes |
|---|---|---|---|
| Large-frame combined cycle | 300-600+ MW per unit | GE 7HA, Siemens SGT-9000HL, Mitsubishi M501JAC | Backlogged to 2030-31 |
| Simple-cycle and aeroderivative | 30-100 MW | GE LM2500/LM6000, Siemens SGT-800, PW Power Systems | Faster delivery; used behind the meter at data centers |
| Reciprocating engines | 1-20 MW each | Wärtsilä, Caterpillar, Jenbacher | Modular; fast start; campus and depot backup |
| Fuel cells | MW-scale blocks | Bloom Energy | On-site power for data centers; no combustion |
| Combined heat and power | 1-100 MW | Turbines or engines with heat recovery | 70-80% total efficiency at factories and campuses |
Record
Dataset Record
- Scope
- Natural gas generation equipment and its role in firm power for electrified loads
- Sources
- GE Vernova, Siemens Energy and Mitsubishi quarterly results (2026); Wood Mackenzie gas turbine price report; LBNL Queued Up 2026
- Updated
- October 2026
- Status
- Mockup · claims pending verification