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Generac Stock Jumps 33% on $8B Amazon Data Center Deal
Why is Generac stock up today?
Generac (GNRC) stock rose 33% to $233 on Thursday after the generator maker signed an $8 billion backup-power supply agreement with Amazon for data centers, its biggest contract ever.
Key numbers
| GNRC 1-Day Move | +33%best single-day gain on record |
|---|---|
| Initial Deal Value | $2.4Bcommitted deliveries in 2027–28 |
| Total Deal Potential | $8Bmaximum aggregate through 2033 |
| Amazon Warrant | 1.69M shares~3% of GNRC shares at $200.93 exercise price |
| Market Cap Gained | +$3.5Bfrom ~$10.3B to ~$13.8B intraday |
| GNRC TTM Revenue | $4.44B+0.6% YoY |
What happened
Generac (GNRC) stock rose 33% to $233 on Thursday after the generator maker signed an $8 billion backup-power supply agreement with Amazon for data centers, its biggest contract ever. Generac will deliver $2.4 billion worth of backup generators to Amazon data centers in 2027 and 2028, with total purchases potentially reaching $8 billion by 2033. As part of the deal, Generac issued Amazon a warrant to buy up to 1.69 million shares at $200.93 each — about 3% of shares outstanding — with vesting tied to cumulative purchase milestones through 2033. The session was Generac's best single-day gain on record, lifting its market value from roughly $10.3 billion to about $13.8 billion in one trading day.
Why it matters
Generac has long been known as a consumer brand — the company that sells backup generators for homes after hurricanes knock out power. This deal flips that picture: the $8 billion Amazon commitment transforms Generac into a critical supplier to AI infrastructure, in the same category as chip makers and power-grid builders. AI data centers need reliable backup power at a scale that ordinary cloud computing never required, and Generac's new status as Amazon's primary generator supplier puts it at the centre of a spending wave that is just beginning.
Who this affects
- MarketbullishMedium impact
- Rival generator stocks gained on strengthened AI power-demand thesis.
- CompanybullishHigh impact
- Generac market value surged $3.5 billion on record trading volume.
- CompetitorsbearishMedium impact
- Caterpillar and Cummins face pressure to win comparable hyperscale contracts.
- IndustrybullishHigh impact
- Generator makers repositioned as essential AI infrastructure providers.
Generac vs Caterpillar, Cummins, Eaton
| GeneracGNRC:NYSE | $13.8B | +33% | +71% | 20x |
|---|---|---|---|---|
| CaterpillarCAT:NYSE | $393B | — | +53% | 28x |
| CumminsCMI:NYSE | $87B | — | +30% | — |
| EatonETN:NYSE | $152B | — | — | — |
As of 2026-09-17
How we got here
Generac acquires Allmand, expanding mobile power equipment for C&I markets.
Generac acquires Enercon, adding generator enclosure and switchgear capacity.
Generac and Amazon sign $8B backup-power supply agreement and warrant deal.
GNRC closes +33%, its best single-session gain on record.
What to watch
- Q3 2026 earnings: first results with expanded data-center backlog context.Q4 2026
- Additional hyperscale deals: Generac near vendor approval with other cloud providers.Q4 2026
- Amazon warrant vesting: tied to $2.4B in 2027–28 generator delivery milestones.2027-01-01
Educational content only. Not investment advice.
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