Generac Traded 3% of Itself for Amazon's Data Center Orders

Amazon didn't want to shop the generator market, so it bought its way into the supplier instead. Generac Holdings signed a long-term agreement on September 16 to supply backup power generators for Amazon's data centers. Attached to the same deal: a warrant for up to 1,693,745 Generac shares, roughly 3% of the company and about $340 million if fully exercised.

If you've never priced one, Generac builds the machines that keep the lights on when the grid fails. Homeowners buy standby units through dealers, while utilities, hospitals and businesses buy bigger versions. Lately the hungriest buyers are data center operators, who need building-sized gensets to cover the seconds between a blackout and a working backup.

Power is the binding constraint on the AI buildout, and Generac sells the fire extinguisher for the boom's server rooms. You can't energize a gigawatt campus on a promise, and those campuses need generation the instant the grid stumbles. Amazon would rather own a slice of the line than haggle over unit prices.

The warrant works like a loyalty card that pays out only if the customer keeps ordering. It vests as Amazon pays. Roughly 308,000 shares vested immediately, and the rest unlock against aggregate gross payments, net of certain offsets, up to a total of $8 billion. Initial deliveries are expected to total $2.4 billion across 2027 and 2028.

This isn't a cold start. Generac already had a global supply agreement with a hyperscale operator committing nearly $700 million of 2027 volume, and signed a second global agreement in late June. Data center product backlog stood at roughly $1.6 billion in late July, excluding a second hyperscale customer's committed volumes.

The rest of the business is mixed. Quarterly net sales rose 11% to about $1.2 billion, with commercial and industrial sales up 29% to $556 million while residential slipped roughly 2%. Net income was $143 million versus $74 million a year earlier, and adjusted EBITDA margin leapt to 24.8% from 17.7%. That jump leaned on a $71 million pre-tax tariff refund that also lifted guidance.

Capacity is being built rather than promised. Generac closed the Enercon acquisition to bring generator enclosures and switchgear in-house, and bought a Belvidere, Illinois facility to expand large-megawatt generator packaging. Both moves say management expects volumes that don't exist yet.

So what re-rates this equity? The mix: Generac still earns its multiple from residential standby units. After a 41% drawdown from its June peak, the stock gapped up more than 30% at the open on the news. If data center gensets scale into the $2.4 billion of expected deliveries, the revenue base changes shape and margin walks up with it.

The competition frames the prize. Caterpillar and Cummins build the incumbent large gensets, while Vertiv and Eaton sell the adjacent layer of switchgear and UPS gear rather than generators. Generac trades below the multiple the data center power complex commands, and that gap is the bull case.

Here's how a short seller reads the same facts. Generac is handing roughly 3% of itself to its own customer, and the structure is vendor financing with a friendlier name. Amazon's payments count net of certain offsets, so penalties, warranty claims or chargebacks shrink what vests. The $8 billion is a cap on a promise, and the backlog behind it is about $1.6 billion.

Then look underneath. Residential sales were shrinking last quarter, capacity generates no revenue until Belvidere and Enercon run, and Caterpillar and Cummins have sold large gensets into data centers for decades. They carry deeper balance sheets, and Amazon now holds a permanent seat at Generac's pricing table through 2033.

Name the falsifier, because it's clean. If data center revenue doesn't show up in 2027 results, or the backlog stops converting, this was a warrant exercise and not an earnings ramp. Watch the data center backlog line in the next print, and whether it keeps climbing.

Which way to lean? The market underpaid for this business for three months, and grid scarcity doesn't get solved by a press release. Generac sells the machine that covers the gap between what the grid delivers and what a model demands, and the AI buildout has no plan B.

Amazon bought the generators and wrote itself a warrant to make sure they arrive. Everyone else building AI buys the same machines without getting equity back, and that part is still priced like a housing stock.

Disclosure: The Signal holds no position in GNRC. Positions may change. This is not financial advice.