Which companies make backup generation for AI data centers?

This catalog lists 10 companies on Backup generation: gensets, fuel systems, HVO, 9 of them with listed equity: Caterpillar, Cummins, Everllence, Generac, Mitsubishi Heavy Industries, Perkins, Rolls-Royce, Volvo Group (Penta), Wärtsilä, Rehlko (Kohler Energy).

How reliable are these backup generation: gensets, fuel systems, HVO supplier placements?

The 10 placements on this part break down as 4 disclosed, 6 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.

7.13

Who makes backup generation for AI data centers

Diesel or gas-fired backup generators, their fuel storage and delivery systems, and renewable diesel (HVO) as a lower-emission fuel alternative, providing power when utility and UPS ride-through are not enough.

Generators take over once a UPS's ride-through window (7.10, 7.11) runs out, providing power for as long as fuel supply allows, and are sized and paralleled (7.14) to match a facility's full backed-up load. Day tanks and larger fuel storage and delivery systems keep enough fuel on site and moving to the engines to sustain an extended outage, and aftertreatment systems reduce the emissions from running large diesel or gas engines, which matters for permitting in many jurisdictions. Hydrotreated vegetable oil (HVO), a renewable diesel substitute, is increasingly specified as a way to reduce a generator fleet's emissions profile without changing the engines themselves, though it depends on a separate renewable-fuel supply chain reaching the site reliably. Because a large campus's genset fleet can rival the output of a mid-size power plant, and because the same large-bore engine manufacturing base also serves marine, rail, and industrial customers, a wave of concentrated data center orders can lengthen lead times across all of those markets at once. Rental fleets provide a way to bridge capacity gaps or cover maintenance windows without owning excess generator capacity outright. For investors, watch order backlogs at large-engine manufacturers, permitting timelines for emissions in the jurisdictions campuses are sited in, and how much HVO supply is being contracted ahead of need.

AI delta: AI campus generator orders are large enough, and concentrated enough in time, that they compete for the same large-engine manufacturing capacity that marine, rail, and industrial customers use, lengthening lead times across all of those markets.

Appears at:Enterprise / small colo Large colo / hyperscale building AI campus GW-class campus· cooling:any — Present at every scale, from a single genset at enterprise up to large paralleled fleets at ai_campus and gw_class sites.

Companies on this part (10)

Show:

Company	Role	Ownership	Ticker	Price	1d	Confidence	Note
Caterpillar	manufacturer	public	CAT	687 USD	-2.3%	inferred
Cummins	manufacturer	public	CMI	517 USD	+0.5%	inferred
Everllence · unit of VW	manufacturer	subsidiary	VOW3.DE*			inferred
Generac	manufacturer	public	GNRC	187 USD	-1.1%	disclosed	· source
Mitsubishi Heavy Industries	manufacturer	public	7011.T	3614 JPY	-1.7%	disclosed	· source
Perkins · unit of Caterpillar	manufacturer	subsidiary	CAT*			inferred
Rolls-Royce	manufacturer	public	RR.L	1164 GBp	-8.3%	disclosed	Power Systems/MTU · source
Volvo Group (Penta)	manufacturer	public	VOLV-B.ST	308 SEK	-1.1%	inferred	Penta
Wärtsilä	manufacturer	public	WRT1V.HE	27.23 EUR	-0.1%	inferred
Rehlko (Kohler Energy)	manufacturer	private				disclosed	· source

Day tanks and fuel systems 7.13a

Company	Role	Ownership	Ticker	Price	1d	Confidence	Note
Preferred Utilities	manufacturer	private				inferred
Pryco	manufacturer	private				disclosed	· source

Aftertreatment 7.13b

Company	Role	Ownership	Ticker	Price	1d	Confidence	Note
Johnson Matthey	manufacturer	public	JMAT.L	2434 GBp	+0.9%	inferred
Miratech	manufacturer	private				disclosed	· source

HVO 7.13c

Company	Role	Ownership	Ticker	Price	1d	Confidence	Note
Diamond Green Diesel · unit of Valero	manufacturer	subsidiary	VLO*			inferred
Neste	manufacturer	public	NESTE.HE	31.28 EUR	+1.1%	disclosed	· source

Rental fleets 7.13d

Company	Role	Ownership	Ticker	Price	1d	Confidence	Note
Herc	service	public	HRI	128 USD	-4.1%	inferred
Sunbelt Rentals Holdings	service	public	SUNB	78.52 USD	-0.4%	disclosed	· source
United Rentals	service	public	URI	1099 USD	-0.9%	inferred
Aggreko	service	private				disclosed	· source

Who competes here

The same table read the other way: every company above competes for backup generation: gensets, fuel systems, HVO sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.

Nearby parts

Children: Day tanks and fuel systems, Aftertreatment, HVO, Rental fleets
Previous in layer: Power smoothing / supercapacitors
Next in layer: Paralleling switchgear & generator controls
Layer: Layer 7 — Electrical: power distribution (grid to rack)

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Backup Generator in The Data Centre Industry

Data Center Physical Infrastructure - Free Class — fundamentals of backup genset systems and fuel types

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Questions about backup generation: gensets, fuel systems, HVO

What is backup generation: gensets, fuel systems, HVO?: Diesel or gas-fired backup generators, their fuel storage and delivery systems, and renewable diesel (HVO) as a lower-emission fuel alternative, providing power when utility and UPS ride-through are not enough.
Which companies make backup generation for AI data centers?: This catalog lists 10 companies on Backup generation: gensets, fuel systems, HVO, 9 of them with listed equity: Caterpillar, Cummins, Everllence, Generac, Mitsubishi Heavy Industries, Perkins, Rolls-Royce, Volvo Group (Penta), Wärtsilä, Rehlko (Kohler Energy).
How does AI change demand for backup generation: gensets, fuel systems, HVO?: AI campus generator orders are large enough, and concentrated enough in time, that they compete for the same large-engine manufacturing capacity that marine, rail, and industrial customers use, lengthening lead times across all of those markets.
How reliable are these backup generation: gensets, fuel systems, HVO supplier placements?: The 10 placements on this part break down as 4 disclosed, 6 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.

Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON