Blue Star Power Systems · PSI Large Gaseous (265-500 kW)
Blue Star NG265-01P
265 kW standby / 250 kW prime · Natural Gas / LPG · Liquid-cooled
250 kW prime-rated natural gas / LP generator from Blue Star Power Systems. PSI 14.6L V8, DSE DCP7310 controller, structural steel base, continuous prime duty.
The Blue Star NG265-01P is the prime-rated variant of the NG265-01, delivering 250 kWe continuously on natural gas (175 kWe on LP). It uses the identical PSI 14.6L V8 platform, structural steel base, and physical enclosure as the standby NG265-01. Prime rating backs continuous duty with a 1-year / 1,500-hour warranty.
Service requirements are identical to the NG265-01. Higher annual operating hours from prime-duty use mean increased spark plug, ignition system, and coolant service frequency. Plan around PSI's prime-duty maintenance schedule rather than the standby interval.
Lock the enclosure, fuel system, transfer switch, and add-ons — we'll confirm pricing, availability, and lead time within one business day. Prefer a free-form quote? That option is still here.
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
2,782,500 BTU/hr≈ 2782.5 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.
Service intervals
Manufacturer-recommended intervals for the Blue Star NG265-01P under standby duty. Field intervals may differ based on load profile, ambient conditions, and fuel quality.
Oil & filter
Every 250 hours or 12 months
Coolant change
Every 4000 hours
Air filter
Every 1000 hours
Spark plugs
Every 1500 hours
Major overhaul
≈ 15,000 hours
Load bank test
Every 12 months
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
Turbocharger
Loss of power, excessive smoke under load
12,000+
moderate
Spark plugs / ignition
Misfire at load, rough running
1,500+
minor
Charge air cooler
Reduced power output, elevated intake temps
10,000+
moderate
Battery
Failed to start during outage
8,760+
minor
Frequently Asked Questions
What is the prime rating of the NG265-01P?
The Blue Star NG265-01P is rated 250 kWe prime on natural gas (175 kWe on LP) at 60 Hz / 1800 RPM. It is backed by a 1-year / 1,500-hour prime warranty. The standby-rated counterpart is the NG265-01 at 265 kWe.
What is the LP prime rating of the NG265-01P?
The NG265-01P LP prime rating is 175 kWe — compared to 200 kWe LP on the standby NG265-01. Required inlet pressure is 11 in. water column at the 3-inch NPT connection for both fuels.
How does fuel consumption compare standby vs prime at similar loads?
At 250 kWe prime load, the NG265-01P consumes 2,779 ft³/hr of natural gas. The standby NG265-01 at 265 kWe consumes 2,899 ft³/hr. The reduction reflects the lower prime output level; per-kW efficiency is comparable across the two variants.
What alternators does the NG265-01P use?
Identical to the standby NG265-01: Stamford HCI534E for 240V single-phase; Stamford S4L1D-D41 for 208V, 240V, and 480V three-phase; Stamford S4L1S-D4 for 600V three-phase. All carry 105°C prime temperature rise.
Open Basler controller + PSI engine + Stamford alternator — no proprietary lock-in. Non-proprietary components serviceable by any qualified tech.
265 kW standby · Natural Gas / LPG · Liquid-cooled
265 kW natural gas standby for large commercial, campus, and hospital (non-critical) facilities where gas-fueled backup matters.
265 kW natural gas / LP standby generator from Blue Star Power Systems. PSI 14.6L turbocharged V8, DSE DCP7310 controller, structural steel base, 208-600V.
Open Basler controller + PSI engine + Stamford alternator — prime-rated, no proprietary lock-in. Serviceable by any qualified tech.
300 kW standby · Natural Gas / LPG · Liquid-cooled
260 kW prime natural gas for continuous-duty commercial, CHP, and campus applications needing 24/7 gas-fueled power.
260 kW prime-rated natural gas / LP generator from Blue Star Power Systems. PSI 14.6L V8, DSE DCP7310 controller, structural steel base, three-phase 208-600V.
Open Basler controller + PSI engine + Stamford alternator — no proprietary lock-in. Non-proprietary components serviceable by any qualified tech.
300 kW standby · Natural Gas / LPG · Liquid-cooled
300 kW natural gas standby for large commercial, campus, and institutional facilities where gas-fueled backup and component independence matter.
300 kW natural gas / LP standby generator from Blue Star Power Systems. PSI 14.6L turbocharged V8, DSE DCP7310 controller, structural steel base, three-phase 208-600V.
