June 11, 2026 –The four biggest technology companies on earth — Amazon, Alphabet, Meta, and Microsoft — have committed a combined $725 billion to capital expenditure in 2026, a 77 percent surge from last year’s already record-breaking $410 billion.
Most of that money builds data centres, and data centres need foundations, steel, power infrastructure, mechanical systems, and electrical contractors.
Two listed construction companies are capturing that wave more directly than any other: Quanta Services and Comfort Systems USA.
Their first-quarter 2026 results were not merely strong — they were the kind of numbers that redefine a sector’s investment narrative.
The Demand Engine: Why Tech Capex Is a Construction Story
For most of the past decade, AI investment meant buying chips and paying software engineers. That calculus has changed.
The compute infrastructure required to train and run large language models at scale demands physical buildings — massive, power-hungry, thermally complex structures that must be built, wired, cooled, and connected to the electricity grid.
The data centre is the new factory floor of the AI economy, and it requires the same heavy lifting as any industrial construction project.
Amazon alone has guided $200 billion in capital expenditure for 2026, the bulk directed at digital infrastructure.
Alphabet has committed $175 to $185 billion, more than doubling its 2025 outlay, with CEO Sundar Pichai acknowledging the company remains compute-constrained in the near term.
Meta raised its full-year capex guidance to $125 to $145 billion, citing higher component and data centre costs.
Microsoft, tracking toward $190 billion for its fiscal year, attributed $25 billion of that figure to rising memory chip and component prices — and still expects to remain capacity-constrained through at least the end of 2026.
The implication for construction is direct: hyperscalers cannot build data centres fast enough. That backlog of unmet demand is flowing straight into the order books of the infrastructure contractors capable of executing at this scale.
| MARKET CONTEXT
Morgan Stanley estimates nearly $3 trillion in AI-related infrastructure investment will flow through the global economy by 2028 — with more than 80% of that spending still ahead. AI-related investment now looks more like industrial build-out than speculative tech spending, contributing an estimated 25% of US GDP growth in 2026. |
Quanta Services (NYSE: PWR): The Grid Play
Quanta Services is the largest electrical infrastructure contractor in North America, and its Q1 2026 results validated years of strategic positioning around grid modernisation and energy transition.
The company reported revenue of $7.87 billion for the first quarter — a 26.3 percent increase year-over-year that beat the $7.0 billion consensus by a significant margin. Adjusted diluted EPS of $2.68 surpassed analyst expectations of $2.04 by 31.4 percent and rose 50.6 percent from $1.78 in Q1 2025.
The standout metric was backlog. Quanta ended the quarter with a record $48.5 billion in total backlog, up from $44.0 billion at year-end 2025, representing a book-to-bill ratio of approximately 1.6x.
CEO Duke Austin, speaking on the April 30 earnings call, was explicit about the drivers: backlog growth was broad-based across transmission, distribution, power and load work — not concentrated in a single large award.
Data centres, 765 kV transmission lines, and gas generation are all expanding as opportunity sets.
Full-year 2026 guidance was raised to revenues of $34.7 to $35.2 billion and adjusted EPS of $13.55 to $14.25. Adjusted EBITDA guidance was set at $3.49 to $3.65 billion.
Shares surged more than 17 percent on the day following the results release. Oppenheimer subsequently upgraded the stock to Outperform with an $800 price target, citing Quanta’s positioning in critical infrastructure sectors.
The AI connection at Quanta is structural rather than incidental. Surging AI-related power demand requires grid hardening, new transmission corridors, and renewable integration — precisely the work Quanta executes at scale.
Data centres in the US are adding load to regional grids faster than utility planning cycles can accommodate, creating a multi-year pipeline of transmission and distribution projects.
Quanta’s fungible craft labour force and vertical supply chain give it execution flexibility that smaller competitors cannot match.
Comfort Systems USA (NYSE: FIX): The Inside Play
If Quanta Services is winning the war for power delivery to data centres, Comfort Systems USA is winning the war for what happens inside them.
The mechanical, electrical, and HVAC contractor reported what CEO Brian Lane called a ‘fantastic quarter’ — and the numbers supported the characterisation without qualification.
Revenue for Q1 2026 surged 56.5 percent year-over-year to $2.87 billion, with same-store organic revenue growth of 51 percent — a figure that signals genuine demand acceleration rather than acquisition-driven volume.
Net income rose to $370.4 million, up from $169.3 million a year earlier. Adjusted EPS of $10.51 cleared the $6.78 analyst consensus by $3.73, a 55 percent earnings beat.
Gross profit margins hit a record 26.3 percent, up from 22.0 percent in Q1 2025, reflecting the premium pricing the company commands on complex, technically demanding projects.
Backlog reached $12.45 billion as of March 31, 2026 — nearly double the $6.89 billion recorded a year earlier. The company entered Q2 2026 with backlog $5 billion higher than it was at the same point in 2025, providing revenue visibility that extends well into 2027.
Management guided full-year same-store revenue growth in the mid-to-high 20 percent range despite the increasingly difficult year-on-year comparisons that lie ahead.
The primary driver is unambiguous: data centre and technology sector demand for Comfort Systems’ core services — complex HVAC installation, mechanical systems integration, and electrical contracting — has created what management described as a super-cycle in industrial construction.
Operating cash flow swung to a $388.8 million inflow in Q1 2026 from an $88.0 million outflow in the same quarter a year earlier, illustrating how rapidly the business model has scaled.
The key risk to monitor is concentration. Comfort Systems’ extraordinary growth is heavily weighted toward technology customers, meaning a material slowdown in hyperscaler construction programmes would bite harder here than at a more diversified peer.
The stock also trades at a premium — approximately 43x 2026 estimated EPS as of late April — which leaves limited margin for error if growth expectations soften.
One analyst recently downgraded to Hold specifically on valuation grounds, even while acknowledging the strength of the underlying business.
Q1 2026 Performance Snapshot
| Metric | Quanta (PWR) | Comfort Systems (FIX) | Combined |
| Q1 2026 Revenue | $7.87B | $2.87B | $10.74B |
| Revenue Growth YoY | +26.3% | +56.5% | — |
| Q1 Backlog | $48.5B | $12.45B | $60.95B |
| Adj. EPS | $2.68 | $10.51 | — |
| EPS Growth YoY | +50.6% | +121% | — |
| FY2026 Revenue Guide | $34.7–$35.2B | Mid-High 20% SS | — |
Source: Company earnings releases, Q1 2026. Same-store (SS) = organic, excluding acquisitions.
What Investors Should Watch
Both companies have provided clear signals about where they expect growth to come from over the balance of 2026 and into 2027.
For Quanta, the focus is on whether its Midwest expansion — including programmatic spending with NiSource as air permits progress — translates into additional backlog additions in the second half of the year.
The company has set a target to more than double earnings by 2030, a commitment that implies sustained double-digit revenue growth and margin expansion.
For Comfort Systems, the key variable is labour. With a workforce now exceeding 23,000, the company’s ability to take on additional volume is constrained by skilled trades availability rather than by demand.
Management has responded with disciplined project selection — a strategic decision to prioritise margin over revenue — which explains both the record gross margins and the deliberate positioning away from lower-complexity work.
Any easing in the labour market for mechanical and electrical trades would be directly margin-accretive.
Four macro risks apply to both names and should be factored into any position sizing decision: interest rate sensitivity (higher rates weigh on infrastructure project economics), tariff headwinds on imported materials, political or regulatory pushback against large data centre developments in specific US states, and the possibility that hyperscaler capex plans are revised downward if AI revenue growth disappoints. The latter appears unlikely in 2026, given that hyperscaler executives have consistently communicated that the constraint on AI infrastructure is supply, not demand.
Bottom Line
The data centre construction wave is not a speculative AI trade — it is a consequence of physical infrastructure that must be built, wired, and kept cool.
Quanta Services and Comfort Systems USA are among the clearest listed proxies for that thesis.
Their Q1 2026 results confirm that backlog conversion is real, margin expansion is happening, and demand visibility extends well into the next fiscal year.
For construction sector investors tracking AI’s industrial tail, these are the names the numbers point to.
As always, investors should conduct their own due diligence and consult a qualified financial adviser before making allocation decisions. Construction stocks carry exposure to interest rate cycles, materials costs, and project execution risk alongside the structural tailwinds described above.
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