Power generators (often sold as generator sets or “gensets”) are used for backup electricity during outages, temporary power at worksites, and continuous/prime power in remote or critical operations.
Below are current, data-backed statistics on generator markets and the grid-reliability trends that drive demand.
Key Power Generator Statistics
- Global generator sets market: US$34.17B (2024) and projected to reach US$57.93B by 2030.
- Global standby generator sets market: US$26.0B (2024) and projected to reach US$48.4B by 2034.
- U.S. generator sales market: US$6.43B (2024) and projected to reach US$10.26B by 2032.
- U.S. outage duration: customers experienced 11 hours of electricity interruptions on average in 2024.
- Storm-driven outages: major events accounted for about 80% of total outage hours in 2024.
- State extremes: South Carolina customers experienced nearly 53 hours of service interruptions in 2024.
- Industry signal (Generac): residential segment sales fell 23% (Q4) while commercial & industrial sales rose 10%, with growing data-center momentum.
Global Generator Sets Market Size
On a global basis, the generator sets market is tracked across low-, medium-, and high-power gensets used for standby and prime power. Market estimates show strong growth through 2030.
Bar chart: Global generator sets market (selected years)
| Year | Bar | Value (US$B) | ||
|---|---|---|---|---|
| 2024 |
| 34.17 | ||
| 2025 |
| 37.05 | ||
| 2030 (forecast) |
| 57.93 |
Max = US$57.93B. Widths: 2024 58.98%, 2025 63.96%, 2030 (forecast) 100.00%.
U.S. Generator Sales Market
In the U.S., generator demand spans residential backup, commercial standby systems, and industrial/prime power units. Market estimates project steady growth through 2032.
Bar chart: U.S. generator sales market (selected years)
| Year | Bar | Value (US$B) | ||
|---|---|---|---|---|
| 2024 |
| 6.43 | ||
| 2025 |
| 6.75 | ||
| 2032 (forecast) |
| 10.26 |
Max = US$10.26B. Widths: 2024 62.67%, 2025 65.79%, 2032 (forecast) 100.00%.
Power Outages: A Primary Driver of Backup Generator Demand
Grid interruptions are a major reason households and businesses invest in standby and portable generators. U.S. reliability data shows 2024 had unusually high interruption hours, largely driven by major storm events.
Bar chart: U.S. average annual outage hours per customer
| Period | Bar | Value (hours) | ||
|---|---|---|---|---|
| 2014–2023 average (approx.) |
| 6 | ||
| 2024 |
| 11 |
Max = 11 hours. Widths: 2014–2023 average (approx.) 54.55%, 2024 100.00%.
What changed in 2024? Major weather events accounted for most of the additional outage time. Reliability reporting highlights that interruptions attributed to major events averaged nearly nine hours in 2024, versus nearly four hours per year across 2014–2023, while “routine” (non-major-event) interruptions typically average around two hours per year.
Standby vs. Portable Generators: Where Growth Concentrates
Standby generator sets (automatic backup systems tied into a building’s electrical system) tend to grow with grid instability, critical infrastructure expansion, and digital uptime requirements. Market tracking for standby generator sets shows a large installed-demand base and a long runway for growth through the next decade.
- Global standby generator sets market: US$26.0B (2024) and projected to reach US$48.4B (2034).
- U.S. standby generator sets market: US$6.6B (2024) and projected to reach US$12.9B (2034).
Commercial & Industrial Demand: Data Centers Are a Notable Tailwind
Beyond storm-driven residential demand, commercial and industrial buyers (including data centers) often purchase larger, higher-margin systems. Recent company reporting and coverage indicate that data-center generator demand is strengthening even as residential demand can soften when outage activity is lower year-over-year.
- In a recent quarter, Generac’s residential segment sales were reported down 23% to $571.87M, while its commercial & industrial segment posted a 10% increase in sales.
- Management commentary highlighted rising orders tied to hyperscale data-center customers and expectations for mid-teens net sales growth in 2026.
Fuel Mix and Technology Trends
Fuel availability, runtime requirements, emissions rules, and operating costs shape purchasing decisions:
- Diesel is commonly used for fast-start, high-load performance in many commercial/industrial standby applications.
- Natural gas standby systems are often favored where pipeline gas is available and buyers prioritize cleaner combustion and convenience (no on-site refueling).
- Hybrid, bi-fuel, and inverter designs are increasingly marketed for improved efficiency, noise reduction, and cleaner operation—especially in smaller portable segments.
Summary
Generator demand is shaped by two big forces: (1) grid reliability and extreme weather (which can spike short-term demand for backup power), and (2) secular growth in uptime-critical electricity use (data centers, healthcare, industrial operations). Market forecasts show continued expansion for both the broader generator sets market and standby generator sets through the next decade.