Our capabilities

Turbine, control and excitation parts and services to keep your power plant operational no matter what.

Trusted, tailored delivery

From routine maintenance to urgent intervention, AP4 delivers turbine, control and excitation parts and services that keep your power plant operating safely, efficiently and without interruption.

Our specialists work across legacy and modern systems to diagnose issues quickly, extend asset life and minimize downtime – whether you need a single critical component or a fully integrated service solution. With deep technical expertise and a responsive support model, AP4 helps you stay online, on schedule and in control, no matter what challenges arise.

Controls solutions

AP4 specializes in control system solutions and services to keep your power plant operational.

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Explore our controls solutions capabilities

Turbine services

Expert controls, electrical, and rotating equipment services for the Alstom fleet. 30+ years of experience with Alstom® and ABB® equipment.

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Explore our turbine services capabilities

Parts and repair

Fast, reliable parts distribution and managed repair services for ancillary gas turbine parts, including fuel system components, hydraulic components, control system components, and more.

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Explore our parts and repair capabilities

Installation services

Expert led gas turbine centerline installation and commissioning services for new build power plants, delivering safe, precise, and reliable execution.

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Equipment we serve

Expert services and approved parts for a range of aeroderivative and heavy gas turbines and associated power plant control systems.

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Controls

At AP4, we deliver expert controls solutions and fast, reliable control system parts for gas and steam turbines, excitation controls, and LCI/SCF controls.