Triangle has years of experience working in the power generation industry. Our ongoing success in this tough and demanding industry demonstrates our commitment to excellence. While our work spans many construction sectors, there is no better example of our dedication to safety and operational excellence than that demonstrated at power facilities.


Construction and maintenance at power facilities and substations including fossil fuel, co-generation, hydroelectric, combustion turbines, steam turbines and nucear facilities. Experiencedin dust control systems, catalytic reduction units (SCR) and flue gas desulferization (FGD) projects.

Alternative Fuels

Ethanol, cool gasification, biodiesel and emerging alternative fuel facilities.


Schools, churches, hospitals, retail facilities, warehouses, office facilities.


Chemical, petrochemical, refinery, manufactuiring, paper/pulp.

U.S. Government

Triangle performs government work including insulation, HVAC, scaffolding and sheet metal work on government projects. Including: UF6 conversion facilities, administrative offices, military bases, etc. Triangle has worked extensively for the U.S. Department of Energy, Tennessee Valley Authority, NASA, U.S. Army Corps of Engineers and others.


Water, wastewater treatment facilities.


Triangle has earned a reputation unsurpassed in the power industry in our areas of expertise. Our experience includes hundreds of complex projects for industry leaders like Tennessee Valley Authority, Ameren, Alstom Power, Babcock & Wilcox, Fluor Constructors, and many more.

Whether it is new construction or ongoing maintenance programs, Triangle provides new HVAC installation and replacement services, as well as plant-wide HVAC maintenance. We also offer TRAC-Log, our website-based maintenance and refrigerant monitoring program used to assist in Title V environmental compliance. Additionally, Triangle was a founding partner of the TVA Valley Mechanical Alliance, a valley-wide agreement to provide HVAC engineering, construction and maintenance services throughout TVA.

In addition to power, Triangle routinely provides highly technical project experience to the commercial and industrial markets.

Our expertise includes:

• Mechanical & Process Insulation

• Heat Tracing

• HVAC Install and Facility-wide Maintenance

• Custom Sheet Metal Fabrication

• Lagging

• Scaffolding

• Refrigeration

• Fireproofing

• Insulation Energy Audits / Thermography Analysis

A testament to our service and reliability are the long-term relationships, many in excess of 20 years, we have with top companies like: Southern Illinois Power Cooperative, Electric Energy, Inc, Ameren, Kimberly Clark, TVA, Sabic Innovative Plastics and many others.