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Owners Engineers

The OEM’s are pushing every plant to upgrade to their latest greatest technology. Not every plant needs to upgrade as urgently as is being stressed by the OEM’s. OEM’s make money selling upgraded systems. The OEM Sales Teams work on commission and will say or promise almost anything to get you to upgrade to their newest technology.

AP4 Group Services is dedicated to helping owners understand the who, what, when and why! We are committed to helping owners “spend smart money”. Our team is available to sit in on planning and negotiations with the OEM’s. When they see our team on your team, they know they cannot make promises they cannot keep. We keep the OEM honest and get a better value for your plant.

Sometimes an upgrade cannot be avoided and during the execution portion, our engineers watch over the OEM technicians to ensure they are following good practice and procedure. The demolition of the original systems can be the most critical step in the process. If the map isn’t made properly during Demo, the road can be easily lost causing schedule slip and making startup extremely difficult. We have seen weeks added on to outages because of poor execution plans.

MKV HMI Retrofit

AP4 Group Services has partnered with Turbine Technologies Inc. to offer the TMOS SCADA replacement.
The TMOS SCADA was designed to be an easy, cost-effective replacement for the IDOS and Cimplicity HMI offered by the OEM.



AP4 Group's parts division AP+M can provide a full range of replacement parts from basic consumables to combustion components.

MRO & Repair

AP+M's MRO capabilities include hydraulic actuators (i.e. VBV, VSV VIGV actuators) and hydromechanical/pneumatic valves including Bleed Valves, CDP, Thrust Balance and Check Valves.

O&M Contracts

AP4 Group Services provides powerplant operations and maintenance (O&M) – including O&M supervision, maintenance planning & scheduling, engineering, consultancy, team training, and resident or outsourced engineers.



Using the latest technology, components, and lessons learned through decades of experience, AP4 Energy Services can ensure complete reliability for both start-up and continuous operation.


This is the key to success in today’s competitive power markets. Heat Rate, Capacity, Start-Up, and Maintenance Costs are critical to the success of aging power plants.


Spending good money where it makes the most difference! We understand that O&M budgets are shrinking, so we work with the plants to understand where and when to repair, replace, or upgrade for maximum return.


Aging systems can continue to provide reliable service for many years to come with the proper service, maintenance, and repairs. Push your upgrades out 5-10 years with confidence.