Caterpillar · Cat D-Series GC (Diesel)

Cat D80 GC

80 kW standby / 72 kW prime · Diesel · Liquid-cooled

80 kW diesel standby generator from Cat's GC value-engineered line. C4.4 turbocharged engine with simplified controls for reliable commercial standby.

Standby power
80 kW / 72 kW prime
Voltage options
120/208V, 277/480V, 120/240V
Frequency / Phase
60 Hz · 3-phase
Engine
Caterpillar C4.4 · 4.4L
EPA / Emissions
Tier 4 Final
standbysmall-commercialCommercialofficechurchMedia & Telecom
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Overview#

The Cat D80 GC is an 80-kilowatt diesel standby generator from Caterpillar's GC value-engineered line. The C4.4 turbocharged-aftercooled inline-4 provides proven reliability for small commercial buildings, churches, and office facilities.

The 80 kW sweet spot#

80 kW covers the essential loads of most small commercial buildings — HVAC, lighting, POS systems, and refrigeration. The D80 GC delivers this capacity from the same C4.4 platform that powers Cat's entire small-commercial generator range, with the GC line's simplified controls keeping costs down.

Our service perspective#

We service the D80 GC alongside the full C4.4 platform. Parts are interchangeable with the standard genset, and the simplified controls reduce commissioning time. At 80 kW, this unit typically runs well below its rated capacity in standby events, extending component life.

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Configure your Cat D80 GC

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.

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Estimate runtime for the Cat D80 GC

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

Estimate runtime on this tank

Estimated runtime

46.3 hours(1.9 days)

Fuel consumption ≈ 4.32 GPH at 75% load. Estimate based on industry-typical 1800 RPM standby curves (≈0.07 GPH/kW at full load). Actual consumption varies by engine, ambient temperature, fuel quality, and tuning.

Frequently Asked Questions

What is the Cat D80 GC?
The D80 GC is Cat's 80 kW value-engineered diesel generator. It uses the C4.4 turbocharged-aftercooled inline-4 — the same engine platform as the standard Cat lineup — with simplified controls optimized for standalone standby at a lower price point.
How does the D80 GC compare to the D100 GC?
Both use the same C4.4 engine platform. The D80 GC is rated 80 kW standby vs. 100 kW for the D100 GC, giving the D80 more headroom at rated load and slightly lower fuel consumption for facilities that don't need the full 100 kW.

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Need service or parts for the Cat D80 GC?

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