Generac Shares Soar as Amazon Secures Equity Stake in $8 Billion Generator Deal

Generac Holdings Inc. shares surged as much as 45% in extended trading Wednesday after the Wisconsin-based generator maker disclosed that Amazon.com Inc. had taken a warrant-linked equity stake in the company as part of a long-term agreement to supply backup power generators for Amazon's data centers worth up to $8 billion over time.

The arrangement, detailed in a filing with the Securities and Exchange Commission, pairs a commercial supply contract with an unusual equity sweetener: rather than paying cash for a stake outright, Amazon received warrants that vest as it buys more generators from Generac, tying the retailer's data-center build-out directly to the power-equipment maker's fortunes.

The numbers

Under the agreement, Generac issued Amazon a warrant covering up to 1,693,745 shares of common stock, exercisable at $200.93 each, a stake equal to roughly 3% of Generac's outstanding shares. Of that total, 307,954 shares vested immediately upon signing; the remainder vest in tranches tied to the aggregate gross payments Amazon makes for backup generators delivered to its data centers, up to the $8 billion ceiling. At full vesting the warrant would be worth roughly $340 million at the strike price. The warrant expires in 2033 and can be exercised for cash or on a cashless basis, with registration rights attached to the underlying shares. Initial generator deliveries under the companion supply agreement are expected to total $2.4 billion across 2027 and 2028.

The deal formalizes something investors had been anticipating for months: hyperscale cloud operators racing to build artificial-intelligence data centers need not just chips and cooling but reliable on-site power, and diesel and gas generators remain the industry's default backstop against grid outages. Generac, long known for home standby generators, had already booked roughly $1.35 billion of data-center backlog for 2027 as of its most recent quarterly disclosure, and the company is now targeting about $4 billion of identified data-center volume through 2028, before Wednesday's agreement is added in. Amazon is described in filings and analyst notes as Generac's second major hyperscale customer, a sign the company's push beyond residential and light-commercial markets is broadening rather than resting on a single relationship.

The structure echoes a deal Oracle struck with fuel-cell maker Bloom Energy in April, in which the software giant also took warrants tied to a power-supply agreement rather than paying only in cash. Together, the two deals point to a pattern: cash-rich technology companies are increasingly using equity stakes to lock in scarce power-equipment capacity and align suppliers' incentives with their own data-center timelines, rather than relying solely on purchase orders that carry no ownership upside for either side.

Wall Street's reaction

Sell-side analysts moved quickly to defend or raise price targets. Cantor Fitzgerald reiterated an Overweight rating and a $333 price target on Generac, while Needham kept its Buy rating and a $282 target. Wells Fargo, which also rates the stock Overweight with a $280 target, told clients it views Generac as largely insulated from a recent Trump administration executive order targeting foreign-sourced grid equipment, since the bulk of the company's generator engines are not affected in the way some rivals' supply chains are. The stock finished Wednesday's regular session up more than 30% before extending its advance in after-hours dealing, lifting Generac's market capitalization to roughly $10 billion.

The warrant's staged vesting means Amazon's ultimate stake, and Generac's ultimate revenue from the deal, will depend on how much backup-generator capacity Amazon actually orders in the coming years rather than being guaranteed today. The first deliveries are not due until 2027, giving both companies two years to work through engineering, permitting and manufacturing capacity before the bulk of the $8 billion ceiling could be reached.

A separate account of Wednesday's filing, reported from Generac's Wisconsin headquarters, noted the stock's swing ranked among its widest single-day moves this year and that Amazon is only the company's second major hyperscale customer to date.

For Generac, the immediate task is converting Wednesday's headline into repeatable hyperscaler business beyond Amazon. For Amazon, the equity stake gives it a financial interest in Generac's execution at a moment when backup power, not just chips, has become a binding constraint on how quickly new AI data centers can come online.