WESCO International (WCC)
Distributes electrical and infrastructure products with logistics and supply-chain services.
Something off on this page? Send us feedback.
Wesco is the middleman for the physical guts of buildings, factories and power grids — it buys wire, breakers, cameras and cable from thousands of manufacturers and gets them to the crews doing the installing, with planning and site services attached. That plumbing business is steady and low-margin. What is reshaping it is data centers, now growing far faster than anything else Wesco sells and pulling work through all three of its arms.
Item facts: FY2025 · year ended Dec 31, 2025, from filings, earnings calls and company pages.
Judgment weights, not filed revenue
The band summarizes business focus and direction. ~ marks estimates.
7 in detail · 11 more below
Wesco Data Center Solutions
Everything a data center needs except the computers — power equipment, cooling, cabling and the crews who plan and install it. $4.3B of sales in 2025, up about half in a year. Watch whether grid hookups and construction labour arrive fast enough to keep the jobs moving.
Competes with Data center solutions (Graybar) · Direct sales of racks, power and cooling (Vertiv) · Data center facility services (CBRE)
In plain English
Picture an AI data center as a warehouse packed with computers that has to be fed an enormous amount of electricity, kept cold, and wired together. Wesco does not make the computers. It supplies the equipment wrapped around them — the power gear, the cooling systems, the miles of cable — and sells the design, installation and site management that goes with it.
Operators pay for the hardware and, increasingly, for the service work around it, which earns a better margin than selling boxes. This is not a separate division: the work is booked across all three of Wesco's arms, which is why management adds it up and reports it separately every quarter.
Ascent
The crew that keeps a finished data center running: maintenance, on-site staffing and liquid-cooling care. Bought in December 2024 carrying about $115M of annual sales growing around 30%; Wesco has not broken out its revenue since.
Competes with Data center facility management (CBRE) · Data center services (JLL)
In plain English
Offices need janitors; data centers need something far more demanding — people on site around the clock who keep the power and cooling running and the equipment alive. That is Ascent, a St. Louis business with more than 330 employees across the United States and Canada that Wesco bought at the end of 2024.
It is paid under contracts to run other companies' facilities, which is steadier than selling equipment, because the money keeps arriving long after the building is finished. For Wesco it closes a loop: supply the gear while the site is being built, then get paid to look after it.
Newark Engineering Group
Singapore engineers who design, install and maintain data center cooling. Bought on July 1, 2026 for an undisclosed price, so none of it shows in the first-half figures; it is also Wesco's base in Southeast Asia.
Competes with Thermal management systems (Vertiv) · Data center cooling (Munters)
In plain English
Pack enough AI chips into one rack — Wesco's own technical write-ups talk about thirty to a hundred kilowatts going into a single rack — and blowing air across them stops working. You have to bring liquid right up to the machines, the way a car engine relies on coolant rather than a fan alone.
Newark Engineering designs those cooling systems, installs them and is paid to keep them healthy afterwards. That is skilled engineering work rather than catalogue supply, so it sells for more than parts alone. It also hands Wesco people on the ground in Southeast Asia to sell the rest of the catalogue from.
Electrical & Electronic Solutions
The wire, breakers, lighting, safety kit and factory automation that contractors and plants buy by the truckload. The slowest grower of the three arms; the parts pulling it along are supply programs for manufacturers and electrical gear for data centers.
Competes with North American electrical distribution (Sonepar) · Construction and industrial electrical supply (Graybar) · North American electrical distribution (Rexel)
In plain English
Every new plant, warehouse and hospital floor swallows an unglamorous mountain of electrical stuff: cable, conduit, breaker panels, light fittings, sensors, gloves and hard hats. Nobody building anything wants to chase forty different manufacturers for it, so they order from one distributor that already stocks it and can put it on the site the morning it is needed.
Wesco earns the gap between what it pays suppliers and what it charges, plus rebates suppliers pay it for buying in volume. Thin margin, enormous volume — and the trade-off is that this arm grows roughly as fast as construction and factory spending, no faster.
Communications & Security Solutions
Cabling, wireless, cameras, door access and meeting-room audio-video, plus the crews who design and deploy them. Fastest-growing arm, and by mid-2026 roughly half of what it sells was going into data centers — its profit margin reached a record 10.2% in that quarter.
Competes with Data communications distribution (Graybar) · ADI Global Distribution (Resideo) · Physical security distribution (ScanSource)
In plain English
If the electrical side is a building's muscles, this is its nervous system: the cable carrying data between floors, the wireless gear, the cameras, the badge readers on the doors, the screens and speakers in meeting rooms. Wesco sells all of it, much of it through Anixter, the network and security franchise at the heart of this arm.
Installers and building owners pay for the parts, then pay again for design, staging and deployment help. That service work carries a fatter margin than the hardware, and as data center projects — which need plenty of both — have piled in, the margins here have climbed with them.
Utility & Broadband Solutions
Transformers, poles, wire and fibre for power companies and internet providers, plus field services. Sales fell 17.7% over two years as utilities worked off stockpiles and city-owned power bid hard on price; both utility and broadband grew again in mid-2026.
Competes with Utility distribution (Border States) · Irby utility distribution (Sonepar) · Utility and broadband supply (Kriz-Davis)
In plain English
The stuff on the poles and under the street. Power companies, member-owned rural co-ops and city-owned utilities buy transformers, switches, connectors and mile after mile of wire; broadband operators buy the fibre and racks that carry internet service. Wesco stocks it, stages it in yards near the work, and sends crews to test cables, pre-wire meters and help install.
These buyers spend from budgets approved years ahead, so orders arrive in waves — and this wave broke badly. Utilities that had over-ordered stopped buying, and city-owned power bought hard on price, squeezing what Wesco could keep. Both sides started ordering again in 2026.
Grid Services
High-voltage design, materials management and installation support for power infrastructure. A multi-year award from an unnamed operator of giant data centers lifted this arm's order book 80% — the company's total order book, up about 60%, is a record.
Competes with Utility services (Graybar) · Irby utility services (Sonepar)
In plain English
Getting electricity to a new data center is less about parts than about sequencing. Transformers and switchgear are ordered years ahead of the day they are needed, and someone has to hold them, schedule them, and get everything energised in the right order. That coordination, plus the high-voltage design work behind it, is what Wesco sells here.
In mid-2026 a large data center operator signed up for several years of it — the first time this part of the company won data center power work. Wesco has not said who the customer is or what the deal is worth, only that it ships over years and earns better margins than this arm's average.
Wesco Data Center SolutionsEverything a data center needs except the computers — power equipment, cooling, cabling and the crews who plan and install it. $4.3B of sales in 2025, up about half in a year. Watch whether grid hookups and construction labour arrive fast enough to keep the jobs moving.Everything a data center needs except the computers — power equipment, cooling, cabling and the crews who plan and install it. $4.3B of sales in 2025, up about half in a year. Watch whether grid hookups and construction labour arrive fast enough to keep the jobs moving.
In plain English
Picture an AI data center as a warehouse packed with computers that has to be fed an enormous amount of electricity, kept cold, and wired together. Wesco does not make the computers. It supplies the equipment wrapped around them — the power gear, the cooling systems, the miles of cable — and sells the design, installation and site management that goes with it.
Operators pay for the hardware and, increasingly, for the service work around it, which earns a better margin than selling boxes. This is not a separate division: the work is booked across all three of Wesco's arms, which is why management adds it up and reports it separately every quarter.
Competes with Data center solutions (Graybar) · Direct sales of racks, power and cooling (Vertiv) · Data center facility services (CBRE)
AscentThe crew that keeps a finished data center running: maintenance, on-site staffing and liquid-cooling care. Bought in December 2024 carrying about $115M of annual sales growing around 30%; Wesco has not broken out its revenue since.The crew that keeps a finished data center running: maintenance, on-site staffing and liquid-cooling care. Bought in December 2024 carrying about $115M of annual sales growing around 30%; Wesco has not broken out its revenue since.
In plain English
Offices need janitors; data centers need something far more demanding — people on site around the clock who keep the power and cooling running and the equipment alive. That is Ascent, a St. Louis business with more than 330 employees across the United States and Canada that Wesco bought at the end of 2024.
It is paid under contracts to run other companies' facilities, which is steadier than selling equipment, because the money keeps arriving long after the building is finished. For Wesco it closes a loop: supply the gear while the site is being built, then get paid to look after it.
Competes with Data center facility management (CBRE) · Data center services (JLL)
Newark Engineering GroupSingapore engineers who design, install and maintain data center cooling. Bought on July 1, 2026 for an undisclosed price, so none of it shows in the first-half figures; it is also Wesco's base in Southeast Asia.Singapore engineers who design, install and maintain data center cooling. Bought on July 1, 2026 for an undisclosed price, so none of it shows in the first-half figures; it is also Wesco's base in Southeast Asia.
In plain English
Pack enough AI chips into one rack — Wesco's own technical write-ups talk about thirty to a hundred kilowatts going into a single rack — and blowing air across them stops working. You have to bring liquid right up to the machines, the way a car engine relies on coolant rather than a fan alone.
Newark Engineering designs those cooling systems, installs them and is paid to keep them healthy afterwards. That is skilled engineering work rather than catalogue supply, so it sells for more than parts alone. It also hands Wesco people on the ground in Southeast Asia to sell the rest of the catalogue from.
Competes with Thermal management systems (Vertiv) · Data center cooling (Munters)
Electrical & Electronic SolutionsThe wire, breakers, lighting, safety kit and factory automation that contractors and plants buy by the truckload. The slowest grower of the three arms; the parts pulling it along are supply programs for manufacturers and electrical gear for data centers.The wire, breakers, lighting, safety kit and factory automation that contractors and plants buy by the truckload. The slowest grower of the three arms; the parts pulling it along are supply programs for manufacturers and electrical gear for data centers.
In plain English
Every new plant, warehouse and hospital floor swallows an unglamorous mountain of electrical stuff: cable, conduit, breaker panels, light fittings, sensors, gloves and hard hats. Nobody building anything wants to chase forty different manufacturers for it, so they order from one distributor that already stocks it and can put it on the site the morning it is needed.
Wesco earns the gap between what it pays suppliers and what it charges, plus rebates suppliers pay it for buying in volume. Thin margin, enormous volume — and the trade-off is that this arm grows roughly as fast as construction and factory spending, no faster.
Competes with North American electrical distribution (Sonepar) · Construction and industrial electrical supply (Graybar) · North American electrical distribution (Rexel)
Communications & Security SolutionsCabling, wireless, cameras, door access and meeting-room audio-video, plus the crews who design and deploy them. Fastest-growing arm, and by mid-2026 roughly half of what it sells was going into data centers — its profit margin reached a record 10.2% in that quarter.Cabling, wireless, cameras, door access and meeting-room audio-video, plus the crews who design and deploy them. Fastest-growing arm, and by mid-2026 roughly half of what it sells was going into data centers — its profit margin reached a record 10.2% in that quarter.
In plain English
If the electrical side is a building's muscles, this is its nervous system: the cable carrying data between floors, the wireless gear, the cameras, the badge readers on the doors, the screens and speakers in meeting rooms. Wesco sells all of it, much of it through Anixter, the network and security franchise at the heart of this arm.
Installers and building owners pay for the parts, then pay again for design, staging and deployment help. That service work carries a fatter margin than the hardware, and as data center projects — which need plenty of both — have piled in, the margins here have climbed with them.
Competes with Data communications distribution (Graybar) · ADI Global Distribution (Resideo) · Physical security distribution (ScanSource)
Utility & Broadband SolutionsTransformers, poles, wire and fibre for power companies and internet providers, plus field services. Sales fell 17.7% over two years as utilities worked off stockpiles and city-owned power bid hard on price; both utility and broadband grew again in mid-2026.Transformers, poles, wire and fibre for power companies and internet providers, plus field services. Sales fell 17.7% over two years as utilities worked off stockpiles and city-owned power bid hard on price; both utility and broadband grew again in mid-2026.
In plain English
The stuff on the poles and under the street. Power companies, member-owned rural co-ops and city-owned utilities buy transformers, switches, connectors and mile after mile of wire; broadband operators buy the fibre and racks that carry internet service. Wesco stocks it, stages it in yards near the work, and sends crews to test cables, pre-wire meters and help install.
These buyers spend from budgets approved years ahead, so orders arrive in waves — and this wave broke badly. Utilities that had over-ordered stopped buying, and city-owned power bought hard on price, squeezing what Wesco could keep. Both sides started ordering again in 2026.
Competes with Utility distribution (Border States) · Irby utility distribution (Sonepar) · Utility and broadband supply (Kriz-Davis)
Grid ServicesHigh-voltage design, materials management and installation support for power infrastructure. A multi-year award from an unnamed operator of giant data centers lifted this arm's order book 80% — the company's total order book, up about 60%, is a record.High-voltage design, materials management and installation support for power infrastructure. A multi-year award from an unnamed operator of giant data centers lifted this arm's order book 80% — the company's total order book, up about 60%, is a record.
In plain English
Getting electricity to a new data center is less about parts than about sequencing. Transformers and switchgear are ordered years ahead of the day they are needed, and someone has to hold them, schedule them, and get everything energised in the right order. That coordination, plus the high-voltage design work behind it, is what Wesco sells here.
In mid-2026 a large data center operator signed up for several years of it — the first time this part of the company won data center power work. Wesco has not said who the customer is or what the deal is worth, only that it ships over years and earns better margins than this arm's average.
Competes with Utility services (Graybar) · Irby utility services (Sonepar)
Named in filings, launches and programs
- AnixterBrandThe network-infrastructure and security name inside the communications arm — the platform Rahi, Ascent and Newark were layered onto.
- Rahi SystemsBrandGlobal data center integrator bought in late 2022 for $217M; the seed the whole data center business grew out of.
- OneWesco cross-selling programCustomer programThe internal push to sell all three arms to the same customer; management named it a driver of mid-2026's better-than-expected quarter.
- Broadband supplyProduct lineFibre and connectivity for internet and wireless providers; growing in the mid-teens in mid-2026 on project wins and share gains.
- Utility supplyProduct lineSupply to investor-owned, municipal and co-op power companies; back to mid-single-digit growth after two years of falling sales.
- OEM supply programsProduct lineRunning the parts supply for manufacturers' own production lines; grew strong double digits on chip, electrification and data center customers.
- Data center electrical supplyProduct line · RampingThe power side of data centers sold through the electrical arm — up more than 70% in mid-2026, about 8% of that arm's sales.
- Installation and deployment servicesServiceDesign, staging and on-site deployment sold alongside the cabling and security hardware; the higher-margin side of the communications arm.
- Utility field servicesServiceCable testing, pre-wired meters, meter installation, storm response and storage-yard management, billed alongside the hardware utilities buy.
- Acre Security distribution agreementCustomer programExclusive U.S. distribution of Acre's cloud-based door-access systems, signed February 2026.
- Edge Zero distribution agreementCustomer programU.S. distribution of Edge Zero's low-voltage monitoring kit, which shows utilities what is happening out on their lines.
AnixterBrand
The network-infrastructure and security name inside the communications arm — the platform Rahi, Ascent and Newark were layered onto.
Rahi SystemsBrand
Global data center integrator bought in late 2022 for $217M; the seed the whole data center business grew out of.
OneWesco cross-selling programCustomer program
The internal push to sell all three arms to the same customer; management named it a driver of mid-2026's better-than-expected quarter.
Broadband supplyProduct line
Fibre and connectivity for internet and wireless providers; growing in the mid-teens in mid-2026 on project wins and share gains.
Utility supplyProduct line
Supply to investor-owned, municipal and co-op power companies; back to mid-single-digit growth after two years of falling sales.
OEM supply programsProduct line
Running the parts supply for manufacturers' own production lines; grew strong double digits on chip, electrification and data center customers.
Data center electrical supplyProduct line · Ramping
The power side of data centers sold through the electrical arm — up more than 70% in mid-2026, about 8% of that arm's sales.
Installation and deployment servicesService
Design, staging and on-site deployment sold alongside the cabling and security hardware; the higher-margin side of the communications arm.
Utility field servicesService
Cable testing, pre-wired meters, meter installation, storm response and storage-yard management, billed alongside the hardware utilities buy.
Acre Security distribution agreementCustomer program
Exclusive U.S. distribution of Acre's cloud-based door-access systems, signed February 2026.
Edge Zero distribution agreementCustomer program
U.S. distribution of Edge Zero's low-voltage monitoring kit, which shows utilities what is happening out on their lines.