Triton Power · TP-NG

Triton Power TP-NG35-UL

35 kW standby / 30 kW prime · Natural Gas · Liquid-cooled

35 kW natural gas generator with PSI 4.3L engine. UL2200 listed for commercial and industrial standby applications.

Standby power
35 kW / 30 kW prime
Voltage options
120/208V, 120/240V, 277/480V
Frequency / Phase
60 Hz · 1/3-phase
Engine
PSI 4.3L · 4.3L
EPA / Emissions
EPA Stationary Spark Ignition
Alternator
Leroy Somer LSA42.3
CommercialManufacturing
Configure & Quote

Overview#

The Triton Power TP-NG35-UL is a 35 kW natural gas standby generator powered by a PSI (Power Solutions International) 4.3L naturally aspirated V-6 engine running at 1800 RPM. This unit is part of Triton's EPA-certified natural gas generator lineup, designed for commercial and light industrial standby applications. UL2200 listed for the US and Canadian markets, it pairs with a Leroy Somer Class H insulation alternator for reliable power delivery. Available in single-phase and three-phase configurations at 120/208V, 120/240V, and 277/480V, the TP-NG35-UL is well suited for small commercial facilities with existing natural gas service.

PSI engines are purpose-built for gaseous fuel applications, offering clean combustion and long service intervals compared to converted diesel platforms. The 35 kW rating makes this an entry-level unit in Triton's natural gas lineup, covering essential loads for retail, office, and small industrial spaces. Sound output is rated at 64 dBA, keeping noise impact manageable for urban installations.

Our service experience#

The PSI 4.3L is a straightforward, naturally aspirated gas engine that is easy to maintain and diagnose. At 35 kW, this unit covers essential circuits for small commercial buildings and pairs well with automatic transfer switches for hands-off standby operation. In Northern California, natural gas generators are popular for facilities that want to avoid diesel permitting requirements and on-site fuel tank regulations.

Engineering specifications

Acoustic

Sound @ 7m, full load
64 dBA

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Estimate runtime for the Triton Power TP-NG35-UL

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

367,500 BTU/hr≈ 367.5 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

What type of fuel does the Triton TP-NG35-UL use?
The TP-NG35-UL runs on natural gas (NG), making it ideal for locations with an existing natural gas supply line. Natural gas generators eliminate the need for on-site diesel fuel storage and provide a continuous fuel source during extended outages, as long as gas utility pressure is maintained.
What gas pressure is required for the TP-NG35-UL?
Natural gas generators in this class typically require a minimum supply pressure of 5-7 inches of water column (WC) at the gas train inlet. A dedicated gas line sized for the generator's BTU demand is recommended. Consult your local gas utility and a licensed plumber to verify adequate supply pressure and volume before installation.
How does a 35 kW natural gas generator compare to a similar-sized diesel unit?
Natural gas generators like the TP-NG35 offer lower fuel storage requirements and reduced emissions compared to diesel units. Diesel generators typically provide slightly higher power density and better transient response, but natural gas units benefit from a continuous fuel supply via utility lines and lower maintenance costs related to fuel system cleanliness.

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.

See all Triton Powergenerators →

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