Generac's Eight Billion Dollar Amazon Deal Powers Stock Surge

Generac Holdings has signed a long-term Amazon deal to supply backup-power generators for Amazon's data centres, an arrangement that could bring the power equipment maker as much as eight billion dollars in cumulative payments. The agreement was disclosed in a regulatory filing dated September 16, 2026, and Generac's shares moved sharply once the filing became public.

Generac closed the regular session on Wednesday at $175.11, barely changed on the day. After the filing surfaced, the stock surged about 40 percent in after-hours trading. On Thursday it rallied as much as 32 percent before settling with an 18.3 percent gain, the strongest performance in the S&P 500 that day. By Thursday morning the shares were trading near $209, roughly 20 percent above the prior close.

How the deal works

Under the Amazon deal, an Amazon subsidiary received a warrant to buy up to 1.69 million shares of Generac common stock at $200.93 per share. Roughly three hundred eight thousand of those shares vested immediately on signing; the rest vest in tranches as Amazon's aggregate payments for backup generators climb toward the eight-billion-dollar ceiling. The warrant can be exercised through September 16, 2033, according to reporting on the filing.

Initial deliveries under the Amazon deal are expected to total $2.4 billion in 2027 and 2028. The arrangement makes Amazon Generac's second hyperscale data centre customer. On the company's second-quarter earnings call, chief executive Aaron Jagdfeld told analysts the company was "in the final stages of negotiations" with the customer on terms, conditions, volumes, and delivery timelines for 2027 and 2028, and that the agreement would be "at least as big as the first hyperscaler agreement" it had announced. That earlier deal brought in roughly seven hundred million dollars of 2027 orders.

The Amazon deal builds on an order book that was already growing. As of July 29, Generac's data centre product backlog stood at about $1.6 billion, excluding the volumes now covered by the second hyperscaler agreement. In the second quarter of 2026, external net sales in the commercial and industrial segment rose roughly 29 percent from a year earlier to $556 million. To handle the coming demand, the company said in a statement it plans to expand its commercial and industrial workforce from about 2,400 employees to more than 3,000 over the next 12 months.

What Wall Street said

Analysts were quick to reset their outlooks. "This is a massive win for Generac and provides clarity regarding the demand underpinning management's recently announced plan to triple manufacturing capacity for large-format generators by August 2027," William Blair analyst Brian Drab wrote in a note. Drab added that the stock could double over the next 12 to 18 months, and said the Amazon deal gave Generac real visibility at a time when investors were questioning whether data centre spending would hold up.

Cantor Fitzgerald's Manish Somalya said Generac's existing data centre backlog already covered 2027, so the more important question was what came after. "The Amazon deal's delivery schedule provides the first tangible evidence of demand extending into 2028 and is materially larger than the opportunity investors could previously quantify for Hyperscaler 2," Somalya wrote.

Canaccord Genuity analyst George Gianarikas reiterated his buy rating and lifted his price target to $375 from $275. "Generac's residential rebound could collide with an accelerating data centre surge—creating a formidable one-two punch. Watch out," he wrote.

The Amazon deal capped a sharp reversal. Generac's shares closed at $293 on June 30 and slid to $175 by September 16, a drop of about 40 percent, as investors doubted the durability of the data centre story. The filing rebuilt that case in a single evening, during a busy week for markets that also saw the SEC set out new rules on tokenized stocks.

Behind the numbers sits the race to power artificial intelligence. Training and running large AI models demands enormous amounts of electricity, and cloud providers are securing grid connections while also locking in on-site backup generation to keep data centres running without interruption. Governments are scrambling to keep up: Europe's debate over AI regulation intensified this week, and tech chief executives including OpenAI's Sam Altman joined a Trump-Xi state dinner in Washington.

Generac said it would keep investing in manufacturing capacity for large-megawatt generators, including the plan to triple capacity for the largest units by August 2027. What matters now is execution under the Amazon deal: delivering the 2027 and 2028 orders on schedule and seeing Amazon's cumulative payments advance toward the eight-billion-dollar cap. Additional terms of the agreement were covered by TradingKey.