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INNIO's 620 MW follow-on order lifts one unnamed US data center developer to about 1.72 GW of Jenbacher gas engines, with the customer and sites still undisclosed.
2 min readAI-assisted
INNIO's image of containerized Jenbacher gas engine units from its release page. The company has not said where the ordered J624 units will be installed.
Image: INNIO
Source · Press image from the INNIO newsroom, used for news reporting.
INNIO has booked a 620 megawatt (MW) follow-on order for containerized Jenbacher J624 gas engines from an unnamed U.S. developer of data center campuses, the company said in a release dated Oct. 22, 2026.
The follow-on 620 MW order takes the customer's cumulative INNIO orders to approximately 1.72 GW, according to INNIO.
Illustration (AI-generated)
The order comes on top of the 1.1 gigawatt (GW) order the same customer placed in July 2026, which takes cumulative orders from the customer to approximately 1.72 GW, according to INNIO. The 620 MW equipment order was booked in September 2026. INNIO, listed on Nasdaq as INIO, described the buyer only as a leading developer and operator of mega-scale data center campuses in the U.S., citing customary confidentiality practices in the data center industry. DatacenterDynamics also reported the order.
All 620 MW will be delivered as containerized Jenbacher J624 solutions, which INNIO says allow standardized installation and faster deployment. Separately, the customer signed a long-term full maintenance agreement for the first 500 MW of the earlier order. The agreement includes all spare parts and labor through a major overhaul, which INNIO describes as giving the gas engine a second operating lifecycle.
Chief executive Olaf Berlien said the containerized units offer fast deployment, high power density and fuel efficiency for AI workloads. Those are the vendor's own claims, and the release gives no efficiency or output figures per engine.
A repeat order of this size shows a large campus developer returning to the same engine supplier within months of its first order, taking its INNIO orders to approximately 1.72 GW. INNIO does not say why this customer chose modular gas engines or whether they will run as primary or bridging power. Voltgrid News reported earlier on Serverfarm's gas-turbine-powered Arkansas campus, another data center developer turning to on-site gas.
The maintenance contract also matters for operators. Covering all spare parts and labor through a major overhaul fixes the service scope for the first 500 MW of the July order, and INNIO says the overhaul gives the engines a second operating lifecycle.
INNIO has not named the customer or the campus sites, so it is not known where the engines will run or whether they will supply the sites directly or feed a grid connection. The release gives no delivery or commissioning dates, no order value and no detail on the natural gas supply the engines would need. It also does not say how much of the 1.72 GW has been delivered.
The next signals to watch are the customer's identity, site permits for gas-fired generation, and any delivery schedule INNIO discloses in later results or order announcements. For comparison, Voltgrid News reported on Dominion's Cumberland gas plant winning local approval.
