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Energy Sentry - Since 1978
About Us

From a Breakthrough in 1978 to a National Standard Today

Since 1978, Interactive Energy Systems has been helping commercial, industrial, and residential customers lower their electric bills through advanced energy demand management systems designed to stabilize the peaks and valleys of electricity use. By automatically managing large, non-essential electric loads, our demand controllers reduce peak demand—resulting in significant cost savings and improved energy efficiency.

This innovative technology was first developed by a team of engineering graduates at Colorado State University. The leader of the group was part of the original team that set out to solve what utilities couldn’t: keeping homes comfortable while holding demand low. Today, the lead person behind the 48 years of development continues to serve as an advisor and educator, having hand-picked the leaders he trusts to take his “baby” to the next level and carry forward the Interactive Energy Systems legacy.

  • Veteran-Owned
  • 45+ Years of Innovation
  • Proven Reliability
  • Customer-First Values
Our Working Process

How We Work Process In Solar Energy

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01

Consultation & Site Assessment

We begin with an in-depth consultation to understand your energy needs and goals. Our team then conducts.

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02

Custom System Design & Planning

Custom system design and planning typically involves creating tailored solutions to meet specific needs

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03

Professional Solar Installation

Assess roof space, tilt, and orientation (for rooftop installations). Evaluate ground space and shading

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04

Monitoring & Ongoing Support

Effective monitoring and ongoing support are critical for ensuring a solar energy systems optimal

Why Choose Us

Trusted Leadership

Ross, Michael, and Lyman share a passion for products that make a meaningful difference. After nearly a decade working together, they’ve never been more excited about an opportunity than Interactive Energy Systems.

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What Defines Us

Integrity • Excellence • Innovation • Customer Obsession • Veteran‑Owned • USA‑Made • UL‑Certified

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Why We’re Different

We’ve never relied on tax credits to make the math work. We offer flat national pricing, a 30‑year warranty, lifetime support, and a <1% historical failure rate.

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Where We’re Growing

Deep roots in Arizona with rapid expansion across NC, SC, VA, GA — and more territories coming online.

CEO

Ross Denny

Experienced C‑level executive with a record of global marketing and sales leadership. Founder/partner in multiple startups with successful sales and mergers. Skilled in business development, systems efficiency, entrepreneurship, public speaking, and scaling solutions. Education includes GE Finance & Manufacturing Management programs, Weatherhead School of Management (CWRU) Executive MBA, and a BS in Mechanical Engineering from Iowa State University.

President

Michael Hamburger

United States Marine Corps veteran and seasoned growth strategist who has led international sales teams. Studied criminal justice at Georgia Southern University. Over 25 years of leadership driving results through innovative marketing, disciplined execution, and relentless customer focus.

COO

Lyman King

Lyman is Founder, operator, and growth accelerator. Throughout his career in Technology, he has shaped disruptive & innovative product-led experiences while building teams and developing culture that thrive in dynamic, high-growth environments.

Team Members

Meet Our Amazing Team Of Experts

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Story of Energy Sentry - Since 1978
Story of Interactive Energy Systems

Let’s See Our Company History

  • 1978

    First Breakthrough

    Colorado team engineers the very first residential demand-control system, proving that homes can stay comfortable while holding demand low.

  • 1990s

    National Expansion

    1,000's of installations have rolled out across AZ, NC, SC, VA, and several other states, building trust and demonstrating consistent results.

  • 2010s

    Technology Refined

    New sensors, advanced relays, and integration with HVAC, EVs, and pool systems bring demand automation into the modern era of electrification.

  • 2020s

    A National Standard

    With 35,000+ installs, a <1% historical failure rate, UL-certified hardware, and flat national pricing, Interactive Energy Systems becomes the trusted standard for homeowners nationwide.

Testimonials

Real Homes. Real Savings. Real Comfort.

Arizona — APS

Before: $480 summer bills with unpredictable spikes. After: ~$220 at 73ºF. “The automation just works — I forget it’s there until the bill arrives.”

Customer

Arizona — SRP

Before: $150+ in summer demand fees. After: Under $30/month. “Paid for itself in under three years.”

Customer

North Carolina — Duke

Before: Couldn’t make TOU‑D work without thermostat games. After: 50%+ total‑bill reduction. “Finally made our rate plan work for us.”

Customer

Virginia — Dominion

Before: Peaks to 6.8 kW. After: <4.0 kW; ~$125/month saved. “It’s like having an energy watchdog in the garage.”

Customer