Engine manufacturers positioned to benefit from surging datacenter power-generation demand.

As AI data center developers seek secure and reliable power to meet immediate project timelines, they are increasingly turning to reciprocating internal combustion engines as grid connections and large gas turbine deliveries continue to stretch years into the future. Many operators are installing on-site natural gas generation as temporary or semi-permanent solutions to bridge the gap.

Though large gas turbines remain the preferred option for hyperscale projects due to their superior efficiency at scale, supply constraints and protracted lead times have pushed buyers toward smaller, more readily available alternatives. Reciprocating engines—similar in core design to those deployed in heavy-duty transportation and industrial applications—are now being clustered to provide the necessary power capacity for data centers.

This shift has benefited manufacturers such as Caterpillar, Innio, and Rolls-Royce, which have seen rising orders tied to AI infrastructure demand. For many of these companies, data center customers now comprise a substantial portion of their backlog, reflecting the critical importance of computing expansion to their business outlook.

The trade-off is significant: reciprocating engines are generally less efficient and produce higher emissions compared with large turbines or grid electricity, and they require more frequent maintenance. However, their relatively short delivery times and flexible deployment options make them attractive in a market where speed to operation often outweighs long-term efficiency considerations.