Overview#
The Generac SG450 is a 450 kW natural gas generator designed for commercial and industrial standby power applications.
Generac
NewGenerac SG450
450 kW standby · Natural Gas · Liquid-cooled
450 kW natural gas generator. Commercial and industrial power generation.
Generac SG450
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- Standby power
- 450 kW
- Voltage options
- 277/480V
- Frequency / Phase
- 60 Hz · 3-phase
- Engine
- Generac 21.9L SI
commercial-standby
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Get pricing & lead time on the Generac SG450
Tell us about the application — kW, voltage, application, install timeline — and we'll respond within one business day with budgetary pricing, lead time, and any sizing notes.
Estimate runtime for the Generac SG450
Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.
Estimate runtime on this tank
Fuel demand at 75% load
4,725,000 BTU/hr≈ 4725.0 cf/min @ 1,000 BTU/cf
On utility natural gas the runtime is generally unlimited provided the supply line and meter can deliver this BTU/hr at the engine's required inlet pressure (typically 5–14" WC residential, up to 5 psi commercial). Confirm against the OEM's published fuel-pressure spec.
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Need service or parts for the Generac SG450?
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