Let’s rewind to the spring of 2011, when energy efficiency wasn’t the buzzword it is today, but for Terry McTigue, the vision was already clear. With a deep background in business and a sharp eye for innovation, Terry launched Integrity Energy Solutions Group (IESG) with one goal: to deliver sustainable energy solutions that produce real returns for clients.
At the heart of IESG’s beginnings was an innovative, strategic partnership in the ESCO (Energy Service Company) division, focused on the supply side of gas. This collaboration laid the groundwork for a mission-driven journey toward reducing energy waste and improving building performance, especially in critical sectors like healthcare and higher education.
“Integrity Energy Solutions Group was founded to provide our clients with economic and sustainable solutions to attain efficient energy output, while providing real returns on their investments.”
— Terry McTigue, President & CEO
Over a decade later, IESG is making that mission a reality in universities, hospitals, industrial plants, and commercial facilities across the U.S. Under Terry’s leadership, the company continues to grow, fueled by innovative technologies, reliable partnerships, and an unwavering commitment to doing what’s right.
Meet the Man Behind the Mission
If you know Terry McTigue, you know he’s not just the CEO—he’s a hands-on, forward-thinking force in the energy industry. Based in New York, Terry brings decades of entrepreneurial experience, having built successful ventures like Action Computer Supplies, JVC Computer Supplies, and Shield It All before founding IESG.
Today, Terry focuses on emerging technologies such as ElectroCell Systems, a patented HVAC solution that improves energy and water efficiency in large-scale facilities. He’s also an active member of the International District Energy Association (IDEA) as a conference attendee and exhibitor, connecting with peers, exchanging insights, and staying ahead of the curve.
What We Do (and Why It Works)
At IESG, we don’t just sell equipment or make recommendations—we provide customized, data-backed solutions designed to lower costs and environmental impact. Our services and products have been carefully vetted and field-tested by trusted energy partners. These are technologies with a track record, not just ideas on paper.
Our approach is hands-on and client-focused. We begin by offering free energy surveys for many of our technologies. This allows us to understand your building’s unique energy profile before proposing any changes. Our solutions are tailored, smart, and always aligned with your goals—whether it’s cutting utility bills, achieving sustainability certifications, or improving occupant comfort.
There’s no guesswork, no sales pitch—just honest advice and high-impact results.
Trusted by Leading Institutions
We’ve supported some of the country’s most respected organizations, from Harvard University and MIT to New York-Presbyterian Hospital. These institutions trust IESG to keep their buildings efficient, their systems running smoothly, and their energy costs under control.
And it’s not just the big names—we value every client relationship, regardless of size. Here’s what a few of our partners have to say:
“The maximum energy savings that IESG allowed us to realize, through ROI data reporting, has created additional project upgrades for our properties.”
— Sean Connaughton, George Comfort & Sons
“We are happy with the results IESG has provided for our business. Thanks again for your persistence and patience.”
— Dr. Steven P. Driver, Sanofi Genzyme
“IESG has been a valued partner and collaborator over the years. They continue to deliver practical and real solutions that generate savings for our clients.”
— John Mikullits, Aramark
Why Choose IESG?
When you work with IESG, you’re teaming up with top-tier professionals who bring expertise, care, and real accountability. Our engineers and project managers are certified, experienced, and passionate about energy efficiency. We work alongside your team, not above it, to design and implement cost-effective strategies tailored to your needs.
Whether it’s upgrading your HVAC system, optimizing lighting, managing water usage, or integrating smart building controls, we’re here to help you maximize performance and minimize waste—without disrupting your operations. Powering the Future—For Free
Want to get a deeper understanding of where energy is headed and how you can stay ahead? Don’t miss our free downloadable eBook, Powering the Future.
It’s packed with the latest insights on sustainable building strategies, ROI-driving technologies, and industry trends that matter most.
It’s just one more way we’re helping clients like you stay informed and efficient.
Let’s Build a Better Tomorrow—Together
Imagine what your facility could look like a year ago—with lower operating costs, more intelligent systems, and a smaller carbon footprint. That’s not a pipe dream—it’s what we help clients achieve daily.
We’re here to guide the way if you’re ready to explore what’s possible.
📞 Call us at 800-757-2406
📅 Or schedule a free consultation with Terry McTigue
Let’s talk about how we can make your buildings cleaner, leaner, and greener—together.
Smarter savings. Healthier buildings. Better partnerships. That’s the Integrity Energy Solutions Group way.
