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Prototype Spotlight: GE ES44AC — Modeling a Modern Freight Workhorse Published 2025-09-29• 8–10 minute read In this guide: What is an ES44AC? Where you’ll see them Modeling suggestions What to buy Operations & layout ideas FAQ GE’s ES44AC—part of the Evolution Series—has become the face of modern North American freight. With 4,400 horsepower, AC traction, and contemporary emissions controls, it’s a staple on heavy mainline assignments. For …