Quanta Services (PWR) 2025 10-K: Surging Revenue and a $44B Backlog

Quanta Services (PWR) is one of those giants working in plain sight, responsible for building and maintaining the vast infrastructure that powers our modern world—from the electric grid and pipelines to the data centers that house the cloud. When a company this critical to our economy releases its annual report, it’s worth paying attention. We've dug into their latest 10-K filing for the year ended December 31, 2025, to see how the business is performing.

A Year of Aggressive Growth

Quanta delivered a powerful performance in 2025, with revenues surging 20.3% to $28.5 billion, up from $23.7 billion in 2024. This isn't just organic expansion; a significant portion of this growth was supercharged by strategic acquisitions, including the purchase of Dynamic Systems.

The company's two main divisions both contributed to this impressive top line:

• Electric Segment: This is the core of Quanta's business, handling everything from transmission line construction to smart grid installation. Revenues here climbed 21% to $23.0 billion.
• Underground and Infrastructure Segment: This division, which covers services for natural gas systems, pipelines, and large industrial facilities, saw revenues grow by a healthy 17.5% to $5.5 billion. Notably, this segment's operating margin improved significantly from 5.7% to 7.3%, suggesting better profitability on its projects.

The Path from Revenue to Profit

While revenue growth is strong, the path to the bottom line reveals some of the costs associated with this expansion. Gross profit grew by 21.8% to $4.3 billion, keeping pace with revenue. However, net income attributable to common stock saw a more modest increase of 13.7%, reaching $1.03 billion.

What's putting pressure on the bottom line? The income statement points to two main factors:

1. Amortization of Intangible Assets: This non-cash expense, which reflects the cost of assets like customer relationships and trade names acquired in takeovers, jumped over 30% to nearly $500 million, a direct result of recent acquisitions.
2. Interest Expenses: Higher debt levels, likely to fund acquisitions and operations, caused interest and financing expenses to rise 29% to $261 million.

To visualize how Quanta's $28.5 billion in revenue navigated through various costs to land at just over $1 billion in net income, the following flow diagram breaks down the 2025 results.

A Fortified Future

Perhaps one of the most telling metrics in the report is Quanta's backlog. Backlog represents the total value of contracted work that has yet to be completed, serving as a strong indicator of future revenue. At the end of 2025, Quanta's backlog stood at a massive $44.0 billion, a significant jump from $34.5 billion a year prior.

This robust pipeline is fueled by powerful secular trends, including the modernization of the U.S. electric grid, the transition to renewable energy sources, and the build-out of communications and data center infrastructure. These are multi-year, multi-billion dollar initiatives that Quanta is perfectly positioned to capitalize on.

In conclusion, Quanta's 2025 filing paints a picture of a company in a high-growth phase, aggressively expanding its capabilities through acquisition to meet surging demand. While the costs of this strategy are visible in its expenses, the phenomenal growth in its backlog suggests that the company is building a strong foundation for the years to come. The key challenge ahead will be to seamlessly integrate its new assets and manage costs to ensure that top-line success translates into even stronger shareholder returns.