Products & Services

Products

Delivering expert solutions for HRSGs, OTSGs, catalyst systems, boilers, economizers, stacks, air systems, and ductwork. Services include assessments, repairs, upgrades, replacements, retrofits, and custom engineering—all designed to enhance plant performance, safety, and reliability.

Engineering Services

We offer comprehensive engineering solutions, including ASME code calculations, ABSA registration, steam generator thermal modeling, plant optimization, and pressure equipment rerates. Services also cover fitness-for-service assessments, steam system debottlenecking, field data acquisition, commissioning and start-up support, plus quality surveillance and inspections. Our expertise ensures reliable, compliant, and efficient plant operations.

Construction, Maintenance, and Turnaround Services

We deliver complete industrial construction solutions, including steam generator and plant equipment installation, pressure equipment inspection, repair, and maintenance. Our team expertly manages demolition to support retrofits, provides detailed construction planning and estimating, along with specialized air pollution control solutions to minimize emissions and ensure regulatory compliance. These services ensure safe, efficient, and reliable plant operations throughout all project phases.

William “Bill” Parnetta President TES Group Inc

William
Parnetta

President

Bill brings over 30 years of leadership in finance, business management, and strategic planning with a strong foundation in the construction and industrial services sector.  

At TES Group, Bill provides both strategic vision and tactical guidance, aligning the company’s growth initiatives with the evolving demands of the power and energy industry. His extensive experience ensures that TES delivers financially sound, reliable, and technically robust solutions to clients. 

Under his leadership, TES leverages decades ofconstruction‑sector expertise through itsaffiliate network , combining engineering, maintenance, and project delivery capabilities to meet complex industrial needs across North America.