With our creation in 2017, ENVOCORE combined over 30 years of experience in energy efficiency, sustainability, resilience, technology, and climate change mitigation from the legacy companies on which we are built.

We use this experience to deliver design/build projects that focus on saving energy and water and improving building performance through our Lighting, Water Efficiency, and Building Envelope divisions. Our Utility Services division offers design/build projects that deliver operational savings, improved infrastructure, enhanced functionality, and revenue recovery.

ENVOCORE’s culture is customer driven. We understand that we are only as good as our last project. This drives a culture in which we are focused on long term relationships. We must prove ourselves at every turn of every project and have been doing so for over 30 years.

ENVOCORE shares our top-notch engineers, state-of-the-art systems and control capabilities, and opportunity producing tools across all companies. We aim to make every partner the beneficiary of a bigger platform of ideas, resources, and influence.

While the industry has weathered any number of challenges over the years, through it all, our team of companies has stood strong with our customers and has never wavered from our values.

Thank you for your interest.

Warm Regards
Francis Wheeler, COO, ENVOCORE

About Us

The ENVOCORE team has constructed over 3,500 projects, logging millions of hours of safety focused operations, project design and implementation under our belt!

While no two design/builds are ever the same, with ENVOCORE as your partner, you can rest assured our employees have the depth of knowledge and experience to get the most out of your project. We get it done right, on time, on budget, and always put safety first.

With offices in the United States and Canada, ENVOCORE is ideally positioned to serve energy service companies (ESCOs) worldwide with innovative, state-of-the-art, energy-efficient solutions that provide measurable waste reduction.

Our Mission

Many of our long-term customers have worked with individual companies at ENVOCORE on goal-specific specialized projects involving lighting, advanced controls, advanced water solutions, building envelope, water efficiency, and utility metering. By pooling our resources as a larger, collaborative group, ENVOCORE is able to increase our buying power and brainpower with top manufacturers and suppliers—and pass those efficiencies on to our customers.

We’re able to share our best-in-class engineers, state-of-the-art monitoring capabilities and opportunity-producing tools across all companies, making every partner and every ESCO the beneficiary of a bigger platform of ideas, resources and influence.

This new collaboration enables us to be more flexible in responding to our client’s RFPs, especially if they have multiple energy conservation measures to be employed. And we have teams and partnerships in place across the country that can manage a project from audit through implementation—ready to make our customers look good.

As a solid base, ENVOCORE can look back on the 3,500+ projects already successfully completed, and look forward to the financial stability a larger organization can bring to the table—along with the largest bonding commitment in the market that we serve.

Our History

The roots of ENVOCORE go back to 1993. In the beginning, two independent lighting companies were started in two different parts of the country: RTS in Chicago, and LRI in Gambrills, MD. Each focused on light design and energy conservation.

For over 20 years both RTS and LRI grew their services, expertise, service areas and portfolios.

RTS first expanded to Detroit, then New Orleans and Mississippi; finally extending their coast-to-coast contracting capabilities via seven offices across the country. Subsidiaries RTS Water and RTS Building Envelope rounded out their full suite of Energy Efficient services.

For its part, LRI also expanded its service footprint and expertise year after year, growing to become a national energy efficiency contractor. Water Savers was added as a wholly owned subsidiary, successfully expanding their services to include analysis, design and implementation of water reduction, reuse and recycling solutions. Later LRI acquired Enlight Energy Efficient Lighting, expanding its lighting services to the West Coast.

On June 30, 2017, Retro-Tech Systems (“RTS”), which includes RTS Lighting, RTS Water Solutions, and RTS Building Envelope, joined LRI Energy Solutions (“LRI”), including wholly owned subsidiaries Lighting Retrofit International, Water Savers and Enlight to form a new company, ENVOCORE. Like the companies that created it, ENVOCORE is dedicated to the growth and success of the energy solutions market.

The ENVOCORE family of companies has continued to grow over the years. In March of 2023, ENVOCORE acquired BER (B|E Retrofit), to augment the services provided by RTS Building Envelope.

At every level, ENVOCORE’s pervasive culture is one of exceeding client expectations through meticulous attention to detail at every phase of work. This allows ESCO customers to minimize their involvement in individual energy conservation processes, meet contractual obligations and provide strong customer service.

Our Leadership

With ENVOCORE’s broader skill sets and offerings come innovative collaborations and ideas that enable us to remain true to our core values. The executive management team has more than 500 years of collective experience in the industry, with each averaging 20+ years in the business. Our leadership team is not only sharing knowledge cross-company, as always, they are available to collaborate directly with ESCO customers to help make the opportunity work. Ultimately, our combination of experience, resources, and energy-efficient solutions allows us to take our ESCO partners to exciting new heights—and set them up for future successes.

  • Francis Wheeler, Chief Operating Officer
  • Ted Restelli, Chief Financial Officer
  • David Pierce, Chief Sales Officer
  • Buck Maynard, Senior Vice President of Operations
  • Greg Castro, Vice President of Operations

Envocore Projects

Heat map of the United States displaying the amount of projects in each state

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Project Success Without Stress
  • Built to Realize Your Vision.
    ENVOCORE provides flexible and efficient service and timelines. Our financial strength and depth of industry knowledge allows us to execute all project opportunities. With employees in 31 states and a bonding capacity of $150 million, our crews have completed projects in each state as well as abroad. Our abundance both in resources and in project success have established us as the leaders in the industry.
  • Unmatched Project Design and Execution.
    With 13 degreed engineers, 38 certified designers, 50 licensed field personnel, and impassioned leadership, we have experienced the industry’s curveballs and will confidently walk with you through them. With our 240 certified safety-trained field personnel, we hold safety as a top priority.
  • Incomparable Experience.
    Our team has completed over 3,400 successful projects locally and globally, with 6 million hours of construction and a successful on-time completion rate of 98.7 percent. Cumulatively, we have saved our customers over $2.5 billion.
  • Transparent Communication.
    Trust forms the foundation of a long-term partnership. We provide the timely data and insight you will need to make decisions from project concept to completion. Through each phase, we promise to deliver complete documentation, so your projects succeed without stress.

ENVOCORE. Building Solutions for Your Success.


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