Direct Answer
Quanta Services reports revenue across 2 business segments in its fiscal 2025 Form 10-K. Electric Power is the largest, with $23.0 billion of revenue (81% of the total), followed by Underground and Infrastructure at $5.5 billion (19%). 93% of revenue came from the United States.
How Does Quanta Services Make Money?
Electric Power supplies 81% of revenue, so Quanta Services's results move mostly with that one business; the others matter more for diversification than for the headline number. Between fiscal 2024 and 2025, Electric Power grew fastest (+21.0%) and Underground and Infrastructure slowest (+17.5%), so the revenue mix tilts toward Electric Power while that gap lasts.
| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| Electric Power | $23.0 billion | $19.0 billion | 80.8% | 21.0% |
| Underground and Infrastructure | $5.5 billion | $4.7 billion | 19.2% | 17.5% |
Where Does Quanta Services's Revenue Come From?
Regions follow the definitions in the filing; most companies assign revenue by customer location.
| Region | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
|---|---|---|---|---|
| United States | $26.5 billion | $21.6 billion | 93.0% | 22.6% |
| Canada | $1.0 billion | $1.0 billion | 3.6% | -0.6% |
| Australia | $780 million | $667 million | 2.7% | 16.9% |
| Other countries | $198 million | $374 million | 0.7% | -46.9% |
What the Segment Figures Do Not Show
The rows above add up to 100% of Quanta Services's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.
Where These Numbers Come From
Every figure on this page is a value Quanta Services reported in the segment note and revenue disclosures of its Form 10-K filed February 19, 2026 (accession 0001050915-26-000006), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.
Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.
Frequently Asked Questions
What are Quanta Services's business segments?
In its fiscal 2025 Form 10-K, Quanta Services reports revenue for Electric Power and Underground and Infrastructure.
Which part of Quanta Services brings in the most revenue?
Electric Power, with $23.0 billion of revenue in fiscal 2025, or 81% of the total.
How much of Quanta Services's revenue comes from outside the United States?
7% in fiscal 2025, by the geographic breakdown Quanta Services reports in its Form 10-K. Companies assign revenue to regions differently (customer location, shipping address or selling entity), so check the filing's definition before comparing companies.