Hipower Systems · HRNG Series (Mobile Natural Gas)
Hipower HRNG-900
720 kW standby · Natural Gas / LPG · Liquid-cooled
720 kW trailer-mounted natural gas generator with PSI natural gas engine. CARB certified. Large rental-ready towable unit for temporary power from a permanent gas supply.
The Hipower HRNG-900 is a 720 kW trailer-mounted natural gas generator in Hipower's HRNG mobile series. At 720 kW, this is one of the largest natural gas trailer generators manufactured — appropriate for major temporary power scenarios: data center bypass, hospital campus generator projects, and large industrial planned outages.
HRNG units connect to the site's permanent natural gas supply rather than carrying on-board diesel. At 720 kW, gas supply infrastructure is a critical project element requiring substantial advance planning. The site must have a very high-capacity utility gas service, and the complete gas system — meter, regulator, and distribution piping — must be engineered and confirmed adequate before deployment. Utility coordination for service upgrades at this scale typically requires significant lead time.
CARB certification makes the HRNG-900 suitable for California temporary standby at this scale without air district variance. At 720 kW, CARB-certified mobile natural gas options are extremely limited, making the HRNG-900 a unique specification for California project teams with sites that have adequate gas infrastructure.
The HRNG-900 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.
Hipower's HRNG series holds CARB certification for California temporary natural gas standby. The HRNG-900 qualifies for California permit-by-rule at 720 kW.
OnPoint Generators supports large HRNG deployments in Northern California. At 720 kW, comprehensive pre-deployment gas system verification, detailed commissioning, and a documented maintenance plan are essential. OnPoint provides full deployment support for large Hipower HRNG units.
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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
7,560,000 BTU/hr≈ 7560.0 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-900 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; at 720 kW deferred replacement causes substantial derating
1,000+
minor
Gas pressure regulator
Pressure drop at full load — verify regulator capacity and upstream utility service before deployment
4,380+
minor
Turbocharger
Boost pressure loss at full load — inspect seals, oil supply, and wastegate
12,000+
moderate
Frequently Asked Questions
What is the HRNG-900 used for?
Very large temporary power applications: data center bypass during critical maintenance, hospital campus generator replacement, large industrial planned outages, and wastewater treatment bypass where 720 kW from a permanent gas supply is needed.
What gas supply is required for 720 kW?
720 kW requires a very high-volume gas service — this is a major utility infrastructure requirement. Meter capacity, high-pressure regulator, and large-bore piping must be engineered and confirmed. This typically requires both a mechanical engineer and utility coordination well in advance of deployment. <!-- NEEDS VERIFICATION: HRNG-900 BTU/hr and gas pressure requirements -->
Is the HRNG-900 CARB certified?
Yes. The HRNG series holds CARB certification for California temporary natural gas standby applications.
Is this a single-trailer or multi-trailer unit?
The HRNG-900 is a single-trailer unit. <!-- NEEDS VERIFICATION: confirm HRNG-900 trailer configuration -->
What are the primary applications at 720 kW?
Data centers needing bypass power during UPS or switchgear replacement; hospital campuses requiring bypass during permanent generator replacement; industrial facilities conducting planned maintenance on large standby systems.
Who provides HRNG-900 service in Northern California?
Contact OnPoint Generators for HRNG-900 deployment and service support in Northern California.
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