Rolls-Royce put few numbers on Power Systems in its trading update of 12 November, but the ones it gave all point the same way. Order intake at the division that builds mtu engines and generator sets rose 62% year on year in the first nine months of 2026. The order backlog stood at GBP 8.6 billion at the end of September, a record, after GBP 8.0 billion at the half-year. Growth is led by power generation and by the governmental business, the company says.
Gas For Prime Power, Diesel For Backup
The line that will be read most closely in the genset trade concerns gas. Orders for gas engines in power generation nearly tripled against the year before, and Rolls-Royce names the cause: demand for prime power from data centers. Orders for diesel backup engines continued to grow strongly as well.
On the diesel side the update mentions one deal that is not signed yet. Rolls-Royce is finalising a significant multi-year contract to supply backup engines to a hyperscaler, with a framework agreement that reaches to 2031. The customer is not named, and neither a number of engines nor a value is given.
Services account for around 40% of the operating profit of Power Systems, according to the update, and the group expects services revenue to grow at a double-digit rate with improving margins.
Mankato And The Engine After The Series 4000
Two points concern what the division will be able to deliver. In July it opened a new logistics and operations centre in Mankato in the United States, and production capacity for mtu Series 4000 generator sets at that site is to more than double. The next-generation engine remains on schedule for a launch in 2028. Rolls-Royce says it will offer 20% higher power density than the current Series 4000, that engine and system testing have gone as planned and that the first customer feedback from demonstrations was very positive.
The targets behind this are steep. Up to 2030 the company aims for annual growth in original-equipment revenue of 25% in power generation and 20% in governmental business, and says the growing backlog and its view of coming projects support those figures.
For the group as a whole, guidance for 2026 is unchanged at GBP 4.7 billion to 4.9 billion of underlying operating profit and GBP 3.8 billion to 4.0 billion of free cash flow. A further share buyback of GBP 1.5 billion is to be completed by the full-year results on 25 February 2027, when chief executive Tufan Erginbilgic intends to revisit the mid-term targets. The update fits what Cummins and Caterpillar reported for the third quarter.
Twenty Percent More From The Same Engine Room
Higher power density is good news for whoever lays out a generator hall or a container: more kilowatts per metre of building. It is less of a gift to everything around the engine. The heat that has to leave through the radiator, the charge air circuit and the exhaust grows with the power and not with the size of the block, so the cooling, the ventilation and the exhaust system of a 2028 set will not fit into the space its predecessor's auxiliaries used. On sites where sets stand in rows, the distance between them is more often decided by cooling air than by the engine itself.
Planners of data center projects with deliveries from 2028 should ask for preliminary heat balance data of the new engine as soon as the manufacturer will release it. And a caution on the headline: the update contains no megawatts and no unit counts, so how many gas engines stand behind "nearly tripled" is something the full-year report in February may or may not tell us.
Sources: Rolls-Royce (trading update), EuropaWire
