Data centers are remaking IES
- IES is shifting from a broad construction services company into a bigger data center supplier.
- Communications revenue grew 34.7% year over year in Q2 FY26, helped by data center demand.
- Infrastructure Solutions grew 63.6% year over year, with Gulf Island adding $37.5 million of revenue.
- Residential revenue fell 9.5%, and its gross margin dropped to 21.5% as homebuilder pricing pressure hurt profits.
- The main question is whether data center growth can stay strong enough to offset housing weakness and execution risk.
Data centers carry the story
IES Holdings has become much more tied to the data center buildout. In Q2 FY26, Communications grew revenue 34.7% year over year, while Infrastructure Solutions grew 63.6%. Those two segments now make up a larger share of the company, and they are the main reason the story has improved.
The bull case is simple. AI and cloud spending keep driving new data centers, and IES sells the kind of electrical, network, enclosure, and power equipment those sites need. Project execution has also been strong, with gross margin rising in Communications and Commercial & Industrial in Q2 FY26.
The bear case is not small. Residential is still a large piece of the company at 29.5% of Q2 FY26 revenue. Its revenue fell 9.5%, and gross margin fell from 25.1% to 21.5%, which shows weak pricing power with homebuilders.
The next test is durability. Data center-exposed segments are growing at very high rates, but those rates may not last. Gulf Island adds capacity and revenue, but it also brings integration risk and started as a small drag on Infrastructure Solutions margin.
Projects, crews, and fixed bids
IES is a holding company with operating businesses that design, install, and maintain electrical and technology systems. It also makes and services infrastructure products, including custom engineered generator enclosures and power equipment.
The company makes money by winning projects for homes, data centers, factories, commercial buildings, industrial sites, and renewable energy projects. A significant portion of revenue comes from fixed-price contracts, which means IES agrees to do the work for a set price.
Fixed-price work can create good profits when bidding and execution are right. It can hurt margins when labor, copper, steel, or other costs rise faster than expected, or when a project runs late.
IES also buys companies to expand. The Gulf Island acquisition boosted Q2 FY26 Infrastructure Solutions revenue, but acquisitions can be hard to blend into existing operations. Tontine Associates owns about 54% to 55% of the company, so it can control most major decisions.
What IES sells
Communications
This segment builds and services technology infrastructure, mainly for data centers and large corporate sites. It includes network, audio and visual, fire, and alarm systems.
Infrastructure Solutions
This segment makes and services electro-mechanical products for industrial customers. Its custom generator enclosures for data centers are a key growth driver.
Residential
This segment installs electrical, HVAC, plumbing, and solar systems for single-family and multi-family housing. It is still large, but housing affordability and pricing pressure are hurting results.
Commercial & Industrial
This segment provides electrical and mechanical design, construction, and maintenance for commercial buildings, factories, data centers, and wind and solar farms.
Q2 FY26 revenue mix
Segment shares are approximate shares of total revenue for Q2 FY26, the quarter ended March 31, 2026. Data center demand touches Communications, Infrastructure Solutions, and Commercial & Industrial, so end-market exposure is broader than the segment names suggest.
What could break
Data center cycle cools
High impact · Medium oddsCommunications and Infrastructure Solutions are driving the best growth at IES. If hyperscale and AI data center construction slows, the company could lose its main growth engine. The very high recent growth rates, including 34.7% and 63.6% in Q2 FY26, set a high bar.
Residential margins keep falling
Medium impact · High oddsResidential revenue fell 9.5% in Q2 FY26, and gross margin fell to 21.5%. Management cited weaker demand and customer pricing pressure. If homebuilders keep pushing prices down, this segment can keep dragging on profit even if the revenue decline slows.
Fixed-price projects go wrong
High impact · Medium oddsA significant portion of IES revenue comes from fixed-price contracts. If labor, copper, steel, or other costs rise after the bid, IES may have to absorb the difference. Poor scheduling or project mistakes can also turn a good contract into a loss.
Gulf Island integration disappoints
Medium impact · Medium oddsGulf Island added $37.5 million of revenue to Infrastructure Solutions in Q2 FY26. But the acquired business had lower margins, which helped pull segment gross margin down from 33.4% to 32.8%. IES needs to improve operations without losing customers or key staff.
Labor limits growth
Medium impact · Medium oddsIES needs skilled crews to install and service complex electrical and technology systems. Management has said labor availability and capacity could limit growth in data center work. Strong demand does not help if the company cannot staff projects well.
Control sits with Tontine
Medium impact · High oddsTontine Associates owns about 54% to 55% of IES. That gives it effective control over most corporate affairs. Outside shareholders have less say if capital allocation or governance choices do not match their preferences.
In one breath
Is IES Holdings a data center stock?
IES is not a pure data center company, but data centers are now the main growth driver. Communications, Infrastructure Solutions, and Commercial & Industrial all serve that market.
Why is Residential a concern for IES?
Residential is still 29.5% of Q2 FY26 revenue. In that quarter, revenue fell 9.5% and gross margin fell to 21.5%, which points to weak demand and pricing pressure.
What did Gulf Island add to IES?
Gulf Island added revenue and capacity to Infrastructure Solutions. It contributed $37.5 million of revenue in Q2 FY26, but it also brought lower margin work that investors need to watch.
What is the biggest thing to watch next?
Watch whether backlog and margins stay strong in Communications and Infrastructure Solutions. Also watch whether Residential gross margin stabilizes after the drop to 21.5%.