SLB, the company that used to be called Schlumberger, agreed on Monday to buy Kelvion, a German firm that makes the equipment that pulls heat out of buildings. The sellers are funds managed by Apollo and funds advised by Triton. The price is $3.4 billion in cash plus about $700 million of debt, or $4.1 billion in all. Close is planned for the first half of 2027 (SLB, 2026).
Kelvion makes heat exchangers and heat-rejection equipment. Data centers are now its largest market. SLB expects that slice to bring in $1.2 billion to $1.3 billion of Kelvion’s $2.3 billion to $2.4 billion in 2026 revenue (SLB, 2026).
I cover power and data centers because the model posts only work if the building stays cool and the grid holds. A lot of companies that used to sell into oilfields, utilities, and industrial plants are now selling into that building.
SLB Already Builds the Box. It Did Not Own the Heat Path.
SLB still does oilfield work. It also sells modular data center halls, offsite construction, engineering, power integration, and digital controls. The company says that data center unit has grown more than 90 percent a year from 2024 through 2026 and should pass 2 gigawatts of delivered capacity by the end of this year (SLB, 2026).
What it did not own was the cooling stack itself. Chief executive Olivier Le Peuch said the deal more than doubles the revenue SLB can take per gigawatt of delivered capacity. Combined data-center revenue on a 2026 pro forma basis is more than $2 billion. The 2028 target is $4.5 billion to $5 billion (SLB, 2026).
An Amazon Web Services modular hall on a show floor. The eight fans on the end wall are the cooling plant. SLB already sells halls like this. The Kelvion deal is a bid to own more of those fans. Photo: Shashi Bellamkonda.Le Peuch called AI “the most significant infrastructure investment cycle in our lifetime” (SLB, 2026).
Power companies, oilfield firms, and industrial suppliers are all trying to sell a finished megawatt, not a single part.
The Next Constraint Is the Neighbor
This purchase assumes the campuses keep getting permitted. That is getting harder.
Northern Virginia is still the data center capital of the world. One market tracker lists 371 facilities and more than 21,000 megawatts of tracked capacity across Loudoun, Prince William, and Fairfax (DC Map, 2026). Loudoun alone has long taken a large share of county property-tax revenue from these buildings.
The welcome has cooled. In July, QTS and Compass dropped the Prince William Digital Gateway after court losses over notice and rezoning next to Manassas National Battlefield Park (Washington Times, 2026). Loudoun supervisors already pulled data centers out of by-right zoning in 2025. Two board members want the grandfathered pipeline cut off as well (Virginia Business, 2026). A July Virginia Commonwealth University poll found 81 percent of registered voters support making data centers offset the load they put on the grid (Virginia Business, 2026).
Residents argue about noise, transmission lines, water, and household power bills. Operators argue about tax base and jobs. Both can be true. The industry still talks like the main problem is a transformer lead time. In NoVA the main problem is a public meeting.
I Watched the First Camouflage Job in NoVA
More than twenty years ago I worked in a building in Northern Virginia. A new building went up next door. No windows. Just a cement facade.
Then they added a layer of glass so it would look like an office building.
That was the early version of data center public relations. Hide the blank wall. Call it an office park. Keep moving.
Glass on concrete is not enough now. Neighbors can hear the cooling plant. They can see the substations. They can read the line item on a Dominion bill. The industry needs better work with communities, not a better fake window.
SLB is buying heat-transfer gear. The bet underneath the price is that someone will still be allowed to pour the slab.
What I Would Watch
Does the 2027 close leave SLB selling cooling into a market that has already chosen other vendors for the next two years of AI halls?
Can SLB attach Kelvion gear to the modular halls it already ships, or do customers keep buying cooling from the specialist they already specified?
Who on the combined team owns the county hearing, the noise wall, and the water story? That work is now part of capacity.
If you are siting new AI capacity, ask the builder who owns community work the same way you ask who owns power and cooling. A vendor that can deliver megawatts on a slide and loses the rezoning is late.
SLB. "SLB to Acquire Kelvion, Expanding its Role Across Data Center Infrastructure." SLB, 31 Aug. 2026, investorcenter.slb.com/news-releases/news-release-details/slb-acquire-kelvion-expanding-its-role-across-data-center/.
Hamilton, Katherine. "SLB to Buy Data Center Cooling Firm Kelvion for $4.1 Billion." The Wall Street Journal, 31 Aug. 2026, www.wsj.com/business/energy-oil/slb-to-buy-data-center-cooling-firm-kelvion-for-4-1-billion-72d2b2b7.
Reuters. "SLB Expands Data Center Business with $4.1 Billion Deal for Kelvion." Reuters, 31 Aug. 2026, www.reuters.com/business/energy/slb-acquire-kelvion-34-billion-2026-08-31/.
DC Map. "Northern Virginia (Data Center Alley) Data Center Market." DC Map, Aug. 2026, dcmap.us/markets/northern-virginia/.
Salai, Sean. "Company Kills Plan for World’s Largest Data Center Hub near Manassas National Battlefield Park." The Washington Times, 3 July 2026, www.washingtontimes.com/news/2026/jul/3/company-kills-plan-worlds-largest-data-center-hub-near-manassas/.
Virginia Business. "Loudoun Supervisors Propose Terminating Grandfather Provisions for Data Centers." Virginia Business, 21 Aug. 2026, virginiabusiness.com/loudoun-supervisors-propose-terminating-data-centers-grandfather-provisions/.
Virginia Business. "Will Public Backlash Kill Virginia's Data Center Boom?" Virginia Business, 30 Aug. 2026, virginiabusiness.com/stafford-county-data-center-boom-public-backlash/.
