Generac's Record Quarter Turns on a $4.5 Billion Backlog

Generac's record third quarter offered investors a useful contrast: the company missed the market's revenue estimate by a narrow margin even as sales, profit, margins and cash flow all improved. Net sales rose 16% from a year earlier to a record $1.29 billion, below the $1.32 billion consensus cited by InvestorsHub/ADVFN. Adjusted earnings per share reached $2.54, above the cited $2.43 estimate.

The difference explains the initial 2% premarket decline. Expectations had risen with Generac's exposure to data-center construction, so a record quarter was not enough to clear every forecast. Yet the operating results show that the business is expanding in both of its main segments rather than relying on a single contract.

Data centers reshape the growth mix

Commercial and Industrial external sales increased 28% to $552 million, while Residential external sales rose 9% to $743 million. The official release said acquisitions, divestitures and foreign exchange contributed a net one percentage point to total sales growth, leaving most of the advance organic.

The strongest forward-looking number was the approximately $4.5 billion backlog for data-center products. That total includes a long-term Amazon supply agreement under which initial generator deliveries are expected to total a combined $2.4 billion in 2027 and 2028. The backlog adds visibility, but it is not current revenue. Generac still has to expand capacity, deliver equipment on schedule and protect margins as those commitments move through production.

Profitability and cash flow improved alongside sales. Adjusted EBITDA rose to $256 million from $193 million, and the adjusted EBITDA margin increased to 19.8% from 17.3%. Gross margin expanded to 39.9% from 38.3%, which the source attributed to favorable pricing and lower tariff costs. Free cash flow increased to $132 million from $96 million.

Reported results also strengthened. Net income attributable to Generac was $109 million, or $1.83 per diluted share, compared with $66 million, or $1.12 per share, in the third quarter of 2025. Those figures are reported measures and should not be confused with the higher adjusted earnings number used in the consensus comparison.

Guidance raises the execution bar

Generac kept its forecast for full-year sales growth in the mid-to-high teens. It also raised the bottom of its adjusted EBITDA margin range to 20.5%, from 20.0%, while leaving the top at 21.0%. That is a modest but meaningful sign that management expects the stronger mix and operating performance to persist through the end of 2026.

The investment case now depends less on proving that data-center demand exists and more on converting a large backlog into revenue and cash without sacrificing margin. Residential growth provides useful diversification, while the Amazon agreement gives the company unusual visibility into 2027 and 2028. At the same time, a large multi-year backlog creates delivery, capacity and customer-concentration risks that a single record quarter cannot resolve.

Generac's revenue miss therefore looks more like an expectations issue than evidence of an operating slowdown. The next test is whether the company can keep residential sales growing while turning its data-center commitments into delivered systems, recognized revenue and durable free cash flow.