Generac Shares Surge After Amazon Signs Backup-Generator Deal Worth Up to $8 Billion

Generac Holdings disclosed in a Sept. 16 securities filing that it signed a long-term supply agreement with Amazon to provide backup power generators for Amazon's data centers, and the stock reaction was immediate.

Shares jumped in after-hours trading Wednesday. Yahoo Finance reported an 18% pop right after the announcement. Yellow.com, citing the same filing, put the after-hours move closer to 40%. By Thursday's close, Bloomberg's Closing Bell coverage pegged Generac's gain at 18%, meaning the stock gave back a chunk of its initial after-hours spike as investors digested the details overnight.

What the Deal Actually Is

Fox News's video coverage headlined the story as a "$2.4B deal." Bloomberg and Yahoo Finance both framed it as an "$8 billion" agreement. Both numbers are accurate. They're just describing different parts of the same contract.

According to Yahoo Finance and Yellow.com, Generac's initial deliveries under the deal are expected to total $2.4 billion across 2027 and 2028. That is the firm, near-term commitment. The $8 billion figure is the total ceiling on payments Amazon could make to Generac over the life of the full arrangement, which stretches out for years beyond the initial delivery window. Neither company has disclosed how the $2.4 billion splits between the two years or what margins the work carries, per Yellow.com.

Amazon Took Equity, Not Just a Purchase Order

As part of the transaction, Generac issued a warrant to Amazon.com NV Investment Holdings LLC, a wholly-owned Amazon subsidiary, covering up to 1,693,745 shares of Generac stock at an exercise price of $200.93, according to Yahoo Finance. That strike price sits roughly 15% above Generac's $175.11 close the day the deal was announced, per Yellow.com. Amazon's position only pays off if Generac keeps climbing.

Of those shares, 307,954 vested immediately. The rest vest in tranches as Amazon's actual payments to Generac accumulate toward the $8 billion ceiling. Yellow.com estimated the full warrant stake would be worth about $340 million, or nearly 3% of Generac's outstanding shares, against a pre-deal market value of roughly $10.3 billion.

Amazon has used this playbook before. Yellow.com noted the company took warrants for as much as $4 billion of Qualcomm stock last week tied to a custom AI chip deal. Amazon's cloud unit separately signed a $38 billion contract with OpenAI in November and opened an $11 billion data center campus for Anthropic the following month.

Wall Street's Read

Cantor Fitzgerald kept its Overweight rating and $333 price target on Generac, calling the pact the most important data center news in the company's history and saying it eases concerns about Generac's 2028 order book, according to Yellow.com. Barclays reiterated an Equalweight rating and $278 target, flagging that the warrant covers about 2.6% of Generac's fully diluted shares. Consensus on the stock sits at Moderate Buy, with 12 buy ratings and five holds.

The deal follows a strong second quarter for Generac, which beat profit forecasts with adjusted earnings of $2.91 a share against a $2.00 estimate, according to Yellow.com. The company's data center backlog stood at $1.6 billion at the end of that quarter, including roughly $1 billion booked in the prior 90 days. Data center revenue topped $100 million in the quarter, and Generac has guided to nearly $450 million in that segment for the full year.

The Political Backdrop

Amazon's spending is part of a broader capital expenditure surge. The company raised its 2026 capex guidance to about $220 billion in July, per Yellow.com. But the data center buildout fueling deals like this one is running into resistance at the state level.

The Daily Signal, citing The Wall Street Journal, reported that more than 10 states have paused or canceled data center tax exemptions as AI-driven construction costs rose and local opposition grew. Ohio's sales tax exemption for data center equipment cost the state more than $1.5 billion in 2025, over 10 times its original estimate, prompting Republican Gov. Mike DeWine to pause new applications in May. New Jersey eliminated $250 million in remaining data center tax credits in August, just two years after making $500 million available. Virginia projected roughly $1.94 billion in lost sales tax revenue from its exemption in fiscal 2025.

Community concerns center on data centers' demands on electricity grids and water supplies, and whether taxpayers should be subsidizing an AI buildout led by some of the most valuable companies on earth. State lawmakers are now grappling with these fiscal and infrastructure questions in real time.

President Trump has pushed back on that skepticism, telling communities that hosting data centers pays off. "If you want to get rich as a state or as a town and if you want to pay lower taxes, if you want to create tremendous wealth, if you want your house to be more valuable and everything else, you're going to want a data center," he said, according to the Daily Signal. Amazon has pointed to its own numbers to back that argument, saying it invested $19.7 billion in Ohio AI and cloud infrastructure and supported more than 6,400 jobs there.

What's still unresolved is how the Generac-Amazon math nets out for the towns hosting the generators themselves, and whether state tax rollbacks slow the pace of deals like this one going forward. Generac's next quarterly filing will show whether the $2.4 billion in near-term deliveries is showing up in revenue on schedule, or whether the bulk of the $8 billion ceiling remains a longer-term bet.