How to Choose a New Ground Power Unit for Your Aviation Operations

A ground power unit (GPU) is one of the most essential pieces of equipment on any ramp. It delivers safe, stable electrical power to aircraft during maintenance, boarding, and pre-flight operations — keeping systems running without draining onboard batteries or running engines. Choosing the right GPU is a significant investment decision, and the wrong choice can mean poor aircraft compatibility, excess downtime, or higher long-term costs.

Whether you’re outfitting a new FBO, expanding a fleet operation, or replacing aging equipment, this guide explains what to look for when selecting a new ground power unit for your aviation operations.

What Does a Ground Power Unit Do?

A GPU supplies external electrical power to a parked aircraft so its onboard systems can operate without running the engines or auxiliary power unit (APU). This supports everything from avionics checks and cabin systems to maintenance and turnaround activities — reducing fuel burn, engine wear, and emissions while keeping operations efficient. Because different aircraft have different power requirements, matching the right unit to your fleet is critical.

Electrically Powered vs. Engine-Driven GPUs

The first major decision is the type of unit. Each has clear advantages depending on your operation.

Electrically Powered (Plug-In) GPUs

Plug-in units draw from an existing power source, making them quieter, cleaner, and well-suited to hangars, gates, and fixed locations where mains power is available. If your operation is looking to reduce emissions and noise on the ramp, electrically powered GPUs are an excellent choice.

Engine-Driven GPUs

Engine-driven units are self-contained and mobile, generating their own power without needing an external supply — ideal for remote stands, military use, and ramps without convenient mains access. If flexibility and mobility are priorities, engine-driven GPUs deliver dependable power anywhere.

Key Factors to Consider When Choosing a New GPU

1. Power Output and Aircraft Compatibility

The most important factor is matching the unit’s output to the aircraft you serve. Aircraft may require 28.5V DC power or AC power at various ratings, so confirm the voltage and capacity your fleet needs. Jetall units, for example, are available in 28.5VDC configurations and AC models ranging from 38KVA to 140KVA to suit a wide range of aircraft.

2. Portability and Mobility

Consider how and where the unit will be used. Do you need a mobile unit that moves between stands, or a fixed installation at a gate? Your ramp layout, distances, and workflow will determine whether a towable, self-contained, or plug-in solution is the best fit.

3. Compliance with Industry Standards

Reliable, safe power delivery is non-negotiable in aviation. Choose a GPU that meets or exceeds the relevant published standards for output quality and safety. Equipment engineered to industry standards protects both your aircraft and your operation.

4. Durability and Build Quality

Ramp environments are demanding — heat, cold, dust, and constant use. Look for robust construction and dependable output in all conditions, so your unit performs reliably with minimal downtime year after year.

5. Controls and Ease of Use

Intelligent controls and straightforward operation reduce training time and the risk of operator error. Clear interfaces and built-in protections help keep both crews and aircraft safe during power delivery.

6. Manufacturer Reputation and Support

A GPU is a long-term investment, so the manufacturer behind it matters. Choose an established maker with a proven global track record, a strong distributor network, and responsive after-sales support. Availability of parts and service keeps your equipment running for its full service life.

A Quick Pre-Purchase Checklist

• Confirm the voltage and output (DC and/or AC KVA) your aircraft require
• Decide between electrically powered (plug-in) and engine-driven based on your ramp
• Assess mobility needs — fixed, towable, or self-contained
• Verify the unit meets or exceeds industry standards
• Evaluate build quality for your operating environment
• Check the manufacturer’s reputation, distributor network, and support
• Factor in total cost of ownership, not just purchase price

Why Choose Jetall GPU

Jetall GPU is a trusted manufacturer of aircraft GPUs serving global aviation and ground handling since 2003. Operations worldwide rely on Jetall for:

• A wide range of units — both engine-driven and plug-in types
• Flexible output options — 28.5VDC and AC models from 38KVA to 140KVA
• Proven global reliability across North/South America, Asia, Europe, and Australia
• Standards-driven engineering that meets or exceeds published requirements
• Trusted since 2003 at FBO ramps, military bases, airport authorities, airlines, and ground handlers

Want to understand the bigger picture first? Read why modern ground power units matter, explore our practical guide to the 28.5V DC electric GPU lineup, or see why Jetall is the modern standard for ground operations.