Triton Power · TP-NG

Triton Power TP-NG500-UL

500 kW standby / 450 kW prime · Natural Gas · Liquid-cooled

500 kW natural gas generator with PSI 22L engine. UL2200 listed for commercial, industrial, healthcare, and data center applications.

Standby power
500 kW / 450 kW prime
Voltage options
120/208V, 277/480V
Frequency / Phase
60 Hz · 3-phase
Engine
PSI 22L · 22L
EPA / Emissions
EPA Stationary Spark Ignition
Alternator
Leroy Somer LSA47.2

Overview#

The Triton Power TP-NG500-UL is a 500 kW natural gas standby generator powered by a PSI (Power Solutions International) 22L turbocharged V-16 engine running at 1800 RPM. This unit is part of Triton's EPA-certified natural gas generator lineup, UL2200 listed for the US and Canadian markets. The Leroy Somer Class H insulation alternator delivers 500 kW standby and 450 kW prime power in three-phase configuration at 120/208V and 277/480V.

At 500 kW, the TP-NG500 enters the range where healthcare and data center applications become relevant. The PSI 22L V-16 provides the displacement and cylinder count for sustained high-output operation on natural gas fuel. The unit meets EPA Stationary Spark Ignition emissions standards and maintains 64 dBA sound output. PSI engines are designed from the ground up for gaseous fuel combustion, with hardened valve seats and optimized ignition systems.

Our service experience#

The 500 kW class is a key specification point for large commercial buildings, healthcare facilities, and data centers. The PSI V-16 platform at this output level requires attention to cooling system capacity and gas supply infrastructure. We recommend annual load bank testing to verify performance under full load, as natural gas generators that run only during brief utility outages may not reach full operating temperature during normal exercise cycles.

Engineering specifications

Acoustic

Sound @ 7m, full load
64 dBA

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Estimate runtime for the Triton Power TP-NG500-UL

Adjust load percent and tank size to estimate runtime. Pre-filled with this model's spec where available.

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Fuel demand at 75% load

5,250,000 BTU/hr5250.0 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.

Frequently Asked Questions

Is the TP-NG500 suitable for healthcare facility backup?
Yes, the TP-NG500-UL is UL2200 listed, which is a prerequisite for healthcare facility backup power per NFPA 110. However, healthcare applications must also consider fuel supply reliability during natural disasters. Many healthcare facilities use natural gas generators as supplemental units alongside diesel generators to provide fuel diversity and extended runtime capability.
How does the PSI 22L compare to the 21.9L in the TP-NG450?
The PSI 22L V-16 in the TP-NG500 is closely related to the 21.9L in the TP-NG450, with minor displacement and calibration differences that yield the additional 50 kW standby output. Both engines share the V-16 architecture, service procedures, and many common components, making fleet standardization practical for facilities operating both models.
What are the advantages of natural gas over diesel at the 500 kW level?
At 500 kW, natural gas generators eliminate the need for large diesel fuel tanks (typically 500-1,000 gallons for 24-hour runtime), avoid fuel degradation during long standby periods, produce significantly lower particulate emissions, and reduce the permitting burden associated with above-ground or underground fuel storage. The trade-off is dependence on gas utility infrastructure, which may be disrupted during seismic events.

Why we recommend Triton Power

Triton Power is our value brand for mobile and portable diesel generators, and an emerging option for industrial standby. When MQ Power's pricing is a stretch or lead times are too long, Triton delivers comparable capability at a lower price point with faster availability.

We are developing our Triton Power sales relationship and building fleet experience. Every engine platform Triton uses — Perkins, John Deere, Kubota, Scania, Volvo — is one we already service daily across other brands. Triton's open architecture means our technicians can maintain these units with standard tooling and widely available parts.

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