Airport ground operations are one of the highest-leverage targets for electrification. Apron equipment runs continuous duty cycles in confined areas, often in high-occupancy environments where diesel emissions and noise are immediate operational concerns. The vehicles themselves are mechanically simple, the routes are short and predictable, and the depot-charging model fits naturally with operational rhythms.
This case study is an early look at a regional Southeast Asian airport that has begun replacing diesel ground support equipment with electric alternatives, supplied through ZCForest's GSE programme. The project is in active rollout and not yet complete — but the early operational data is informative for anyone considering similar transitions.
The starting point
The airport in question handles a mix of regional commercial traffic and some international service, with apron operations running essentially continuously across multiple gates. The pre-existing GSE fleet was a mix of diesel tugs, baggage tractors, belt loaders, and ground power units — typical for airports of this scale.
The drivers for the transition were threefold: emissions reduction targets imposed by the airport authority and reinforced by airline customers; ramp-side air quality concerns affecting workers and nearby communities; and increasingly favourable total-cost-of-ownership economics as electric GSE has matured.
The scope
The first phase of the rollout covers a meaningful portion of the apron fleet, with subsequent phases planned to expand coverage progressively as charging infrastructure is built out and operational confidence accumulates.
The vehicles supplied include electric baggage tractors, light tugs, and supporting GSE configured for the specific operational requirements of this airport — including local power infrastructure compatibility, climate-appropriate cooling and battery management, and the specific connector and communication standards used by the existing operations team.
The infrastructure side
An often-overlooked aspect of GSE electrification is the charging infrastructure. Electric vehicles need to charge, and the charging system has to fit into the operational rhythm without disrupting turnaround times. For this project, we deployed a mix of overnight AC charging for vehicles with consistent schedules and DC fast charging at strategic points for vehicles that need top-ups during peak operations.
What's working well
Early operational feedback from the rollout has been positive across several dimensions:
- Operator preference. Operators consistently prefer the electric vehicles to their diesel counterparts — quieter, cleaner cabin environment, smoother power delivery.
- Reliability. With far fewer mechanical components than diesel equivalents, in-service reliability has been higher than expected in the early operational period.
- Lower running costs. Energy costs per operating hour are meaningfully lower than diesel, even before factoring in lower maintenance.
- Local air quality. Measurable improvements in air quality near the apron and in the cabin environment of the vehicles themselves.
What's been more challenging
The honest list of friction points:
- Initial capital cost. Even with declining battery prices, electric GSE typically carries a capital premium over diesel. The TCO closes over the operational period, but the initial outlay requires explicit capital planning.
- Charging infrastructure. The infrastructure side of the rollout is non-trivial and needs to be planned in parallel with the vehicle deployment, not after.
- Severe weather operations. In the specific climate of this airport, hot ambient temperatures place real demands on battery thermal management. Engineering choices that work in temperate climates need adjustment.
What's next
The rollout will continue through 2026, with subsequent phases adding additional vehicle categories and expanding to cover the full apron fleet. Lessons from the first phase are being incorporated into the specification and deployment of subsequent phases.
For airport authorities, ground handlers, and aviation customers considering similar transitions, the early read is encouraging — the technology is ready, the operational fit is good, and the economics are increasingly favourable. The right approach is a structured transition: pilot a portion of the fleet, capture operational learnings, then scale based on demonstrated performance. Reach out via WhatsApp or email if you'd like to discuss specifics for your operation.