Hipower Systems · HRNG Series (Mobile Natural Gas)
Hipower HRNG-400
312 kW standby · Natural Gas / LPG · Liquid-cooled
312 kW trailer-mounted natural gas generator with PSI natural gas engine. CARB certified. Rental-ready towable unit for temporary power from a permanent gas supply.
The Hipower HRNG-400 is a 312 kW trailer-mounted natural gas generator in Hipower's HRNG mobile series. At 312 kW, this is a large temporary power unit suited for industrial facility outages, hospital bypass power during generator replacement, major construction projects, and large events at venues with high-capacity gas service.
The HRNG-400 connects to the site's permanent natural gas supply — no on-board diesel, no fuel delivery, and no SPCC compliance. Runtime is continuous while gas supply is maintained. Gas supply capacity at 312 kW is a critical deployment planning item — the site's gas service, meter, and distribution piping must be confirmed adequate for the generator's full-load BTU demand before deployment.
CARB certification makes the HRNG-400 suitable for California temporary standby applications without air district variance. At 312 kW, diesel alternatives at this power class carry large tanks with significant regulatory and logistical overhead; the HRNG-400 eliminates all of that for gas-served sites.
The HRNG-400 is powered by a PSI natural gas engine running at 1800 RPM. PSI supplies spark-ignited engines to multiple standby generator manufacturers and maintains a broad parts and service network across North America. The specific PSI model designation for this output class is pending verification from OEM documentation — service follows standard PSI spark-ignited practice: spark plugs and oil at 1000-hour intervals, annual gas system inspection, no DPF, no DEF.
OnPoint Generators supports HRNG natural gas trailer generators in Northern California. The HRNG-400 is appropriate for large temporary power applications at industrial and commercial sites where permanent gas service is available and diesel logistics are operationally or regulatorily undesirable.
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Get pricing & lead time on the Hipower HRNG-400
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.
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
3,276,000 BTU/hr≈ 3276.0 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.
Service intervals
Manufacturer-recommended intervals for the Hipower HRNG-400 under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.
Oil & filter
Every 1000 hours or 12 months
Air filter
Every 500 hours
Spark plugs
Every 1000 hours
Major overhaul
≈ 30,000 hours
Common failure modes
What we've seen fail on this platform. Use as a service-planning reference, not a diagnostic — actual failure modes depend heavily on duty cycle and maintenance history.
Component
Symptom
Typical hours
Severity
Spark plugs
Erosion from natural gas combustion — replace at 1000-hour intervals
1,000+
minor
Gas pressure regulator
Pressure drop under full load — verify regulator capacity before deployment
4,380+
minor
Trailer road lights
Wiring damage from road vibration — inspect at each deployment
2,000+
minor
Frequently Asked Questions
What applications suit the HRNG-400?
Large commercial construction sites, industrial facilities during planned outages, hospital bypass power during generator replacement, data center maintenance windows, and large venue events where 312 kW from a permanent gas supply is needed.
What gas supply is required for 312 kW?
312 kW requires a high-volume gas supply at the deployment site. Gas supply line sizing and inlet pressure must be confirmed by a mechanical engineer before deployment. <!-- NEEDS VERIFICATION: HRNG-400 BTU/hr and gas pressure requirements -->
Is the HRNG-400 CARB certified?
Yes. The HRNG series holds CARB certification for California temporary natural gas standby applications.
How does the HRNG-400 differ from diesel trailer generators at this power class?
The HRNG-400 connects to the site's permanent gas supply — no diesel tank, no fuel delivery logistics, no SPCC risk. At 312 kW, diesel alternatives require large on-board tanks with significant weight. The gas unit is mechanically simpler and logistically cleaner for sites with gas service.
What is the typical rental duration?
30–90 day construction hookups are most common. Emergency and maintenance window rentals may be shorter. Long-term rentals require oil change scheduling to align with the rental period.
Who provides HRNG-400 rental and service in Northern California?
Contact OnPoint Generators for HRNG-400 availability and deployment support in Northern California.
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