GNRC
Generac
Summary
What they do:
North America's largest backup power generator manufacturer — making the diesel and natural gas generators that keep data centers running when the grid goes down, plus residential standby generators and battery storage systems.
Why they matter:
Every data center requires backup power for continuity — Generac is pivoting aggressively into the large megawatt-class generator market targeting hyperscaler and colocation data centers, with a $400M data center backlog and an estimated 5,000-machine industry shortage for 2026.
Recent performance:
FY2025 revenue $4.0B (-2% YoY on residential weakness), Q4 missed estimates. But C&I/data center momentum is accelerating — data center backlog $400M, C&I guided +30% for 2026. Stock at ~$212, market cap ~$12.5B.
Our Verdict
Legacy residential backup power company transforming into a data center backup generator play — the $400M data center backlog and 30% C&I growth guide signal a structural shift, but residential weakness and premium valuation mean timing the entry matters.
Structural trends
Structural
71
/ 100
Moat
5/10
Backup power
AI Exp.AI Exposure
Embedded~15% AI
Play Type
EmergingAI Growth
~30%+
Rel. Value
58
ATTRACTIVEPriceLIVE
$211.87
+3.27%
Live via Yahoo Finance · refreshes every 5 min
Market Cap
$12.4B
P/E Ratio
78.8
P/S Ratio
3.0x
52W High
$241.09
52W Low
$104.90
52W Chg
102.0%
Beta
1.79
Every data center, from a 5MW colocation facility to a 500MW hyperscaler campus, requires diesel or natural gas generators on-site that can take over the full electrical load within seconds of a grid failure. These are not small portable units — they are multi-megawatt generator sets, each the size of a shipping container, sitting in rows outside every data center facility. When the grid goes down, these generators start automatically and keep servers running until grid power returns. Failure is not an option — a data center without backup power is a building full of expensive paperweights.
Generac is the largest backup power company in North America, with 45%+ residential market share built over decades of selling home standby generators. The company operates through two segments: Residential Products (~55% of revenue) makes the standby generators homeowners install for storm resilience, plus portable generators and battery storage. Commercial & Industrial Products (~45% of revenue) makes large-format generators for businesses, hospitals, telecom towers, and increasingly, data centers.
The data center pivot is the story. Generac entered the large megawatt generator market in 2025 with a purpose-built product line targeting data centers and other critical-power applications. The initial response has been "very strong" per management — the global data center backlog reached $400M by Q4 2025, with the majority expected to ship in 2026. Management estimates a structural deficit of approximately 5,000 backup generator units for 2026 alone — demand from data center buildout is outstripping the industry's manufacturing capacity. Generac is expanding production capacity to address this gap, including the Allmand acquisition which adds mobile power generation capability.
The company is headquartered in Waukesha, Wisconsin, with manufacturing facilities across the US, Mexico, and internationally. FY2025 revenue was approximately $4.0B, down slightly year-over-year due to residential weakness (fewer major storm events in 2025 vs. 2024). The company guides mid-teens revenue growth for 2026, driven primarily by the data center C&I ramp.
Supply Chain Dependencies
Upstream Suppliers
Downstream Customers
The Catch
GNRC is still 55% residential, and residential backup power is weather-dependent — a quiet storm year kills demand. The data center pivot is real but early: Generac is the #3 player behind CAT and CMI, and data center operators prioritize proven reliability in mission-critical backup power. The $400M backlog could be a one-time project cycle rather than the start of a durable franchise. If residential stays weak and the data center pivot stalls simultaneously, the stock has 30%+ downside from current levels because the multiple assumes growth that isn't visible in the trailing numbers.
If They Win
If Generac captures 15-20% of the data center backup power market and residential recovers with normal storm patterns, the company transforms from a weather-dependent residential generator company into the third pillar of data center power infrastructure alongside Caterpillar and Cummins. Revenue compounds to $6B+ by 2028, C&I becomes the majority of the business, and the EBITDA margin profile shifts from 16-17% (residential-weighted) to 20%+ (C&I-weighted). The 5,000-unit industry shortage provides multi-year backlog visibility. At that scale, the current $12.5B market cap looks modest — data center power infrastructure companies trade at 20-25x EBITDA, implying $20B+ enterprise value on $1.2B EBITDA.
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Not financial advice. All scores generated via AI algorithms using public data.