Data center generator lead times and capacity
11 vendors have dated, sourced news on generator capacity for data centers: factory expansions, multi-year capacity deals and gigawatt-scale orders. Each item is a first-hand statement from Cummins, mtu, Rehlko, Generac, INNIO Jenbacher, Wärtsilä, PROENERGY, APR Energy, Everllence, Doosan and Yanmar.
Counts come from the sourced dataset; the methodology sets the rating rules.
| Capacity and lead-time news | Prime mover | Plants | |||
|---|---|---|---|---|---|
| Doosan Enerbility | Mar 2026: seven additional 380 MW turbine/generator units ordered for a U.S. data center; deliveries scheduled monthly from May 2029. | 380,0001 | Gas turbine | Changwon, South Korea (manufacturing and full-load testing) | 2026-11-11 |
| PROENERGY | Apr 2026: 650 MW order of 13 PE6000 units for Crusoe AI factories | 50,0001 | Gas turbine | — | 2026-11-11 |
| APR Energy | Jan 2026: eight additional turbines expanded owned fleet capacity from 850 MW to over 1.1 GW (fleet total, not a per-unit rating). | 35,0001 | Gas turbine | — | 2026-11-11 |
| Wärtsilä Energy | Oct 2026: 282 MW U.S. data-center order for 15 × 50SG engines, with equipment delivery in 2028 and operation expected in 2029. The 50SG order is separate from the named rating envelope. | 22,9001 | Reciprocating engine | — | 2026-11-11 |
| INNIO Jenbacher | Oct 2026: 620 MW follow-on order brings one data center customer to about 1.72 GW of containerized J624 engines; a separate 450 MW order (Sep 2026) delivers by 2028 | 10,6061 | Reciprocating engine | — | 2026-11-11 |
| Generac Industrial Energy | Jun 2026: acquired a facility in Belvidere, Illinois to expand packaging capacity for large-megawatt generators, citing data center demand | 4,0001 | Reciprocating engine | Oshkosh, Beaver Dam and Sussex, Wisconsin, US; Belvidere, Illinois, US | 2026-11-11 |
| Rehlko (formerly Kohler Energy) | Sep 2026: Changzhou plant expansion doubles annual backup power capacity from 5.5 GW to 11 GW, citing AI infrastructure demand | 4,0001 | Reciprocating engine | Changzhou, China | 2026-11-11 |
| Cummins | May 2026: Cummins announced large-engine capacity and product investments for power generation at its Analyst Day; Q3 2026 Power Systems sales rose 15%, led by data center demand | 3,5004 | Reciprocating engine | — | 2026-11-11 |
| Rolls-Royce Power Systems (mtu) | Dec 2025: five-year framework with AVK secures production capacity for mtu Series 4000 emergency generators for the UK and Ireland data centre market | 3,2501 | Reciprocating engine | — | 2026-11-11 |
| Everllence (formerly MAN Energy Solutions) | Jul 2026: order for 24 × 18V51/60G engines for a 480 MW off-grid U.S. hyperscale data center; phased deliveries starting mid-2026. | — | Reciprocating engine | — | 2026-11-11 |
| Yanmar | Apr 2026: new Kitakyushu emergency-power factory announced, scheduled to operate in 2028; 3,000 kVA-class lineup planned from FY2026 and 4,000 kVA-class from FY2028. | — | Reciprocating engine | Amagasaki, Japan (GY engine production); Kitakyushu, Fukuoka, Japan (planned factory) | 2026-11-11 |
The lines behind each row
All 37 vendorsHow to read the columns
Methodology- Capacity and lead-time news
- The latest dated, sourced statement on factory capacity, expansion investment or lead time for these lines, from the vendor, a filing or trade press. Month and year first.
- Largest unit kW
- Highest published electrical output of one generating unit in the named Lines, in kWe. Standby where available; other duty and frequency bases are disclosed in Rating basis and scope. kVA-only figures assume 0.8 power factor. Mechanical output and multi-unit totals are excluded.
- Prime mover
- What turns the alternator in the named lines: a reciprocating (piston) engine, a gas turbine, or both.
- Plants
- Factories the vendor names for these generator sets, engines or turbines (city and country).