Top Tennessee Energy Companies (65)

Hiller Plumbing, Heating, Cooling & Electrical is a premier provider of residential and commercial plumbing, HVAC, and electrical services. Founded in 1990, the company is dedicated to delivering exceptional customer service, high-quality repairs, and preventive maintenance. With a strong presence across Tennessee, Kentucky, and Alabama, Hiller focuses on providing stable career opportunities for technicians while ensuring customer satisfaction through professional,...

We are a Tennessee-based clean energy tech start-up with a mission to utilize carbon emissions as chemical feedstock to manufacture high value functional materials.

POET is the world's largest producer of ethanol and a leader in bioprocessing, focused on renewable energy and agricultural products.

Optimus is a Houston-based professional services firm founded by energy-industry veterans. It provides targeted recruiting, direct-hire and contract staffing, and consulting services to a global client base. The company specializes in commodities and technology business areas, drawing on experience in energy trading, marketing, accounting, risk management, technology, and strategic consulting to support clients’ operations and deliver practical solutions for long-term...

Eni is a global integrated energy company that develops and delivers energy solutions for individuals and businesses. It supports a just energy transition, with a focus on preserving the planet and enabling efficient, sustainable access to energy. Its operations are grounded in innovation, technical capabilities, responsibility, integrity, and transparency across markets, customers, and communities worldwide.

Tri Star Energy is a Nashville-based, family-owned fuel distributor and convenience-store operator serving businesses, organizations, and communities. Its offerings span wholesale fuel distribution, commercial fuel services, retail convenience stores, station services, and customizable fuel programs. Since its founding, the company has expanded beyond Middle Tennessee into western Kentucky, northern Alabama, and northern Georgia, focusing on dependable fuel service, quality convenience-store...

X-energy is delivering the next generation of carbon-free energy by reinventing nuclear power. We believe in leaving a cleaner planet for our children and grandchildren, while continuing to provide sufficient and affordable power to sustain growing populations around the world. That is why we have reinvented nuclear power, with a unique combination of proven technologies and new innovations, to meet our...

Carollo Engineers is the largest firm in the United States dedicated solely to water related engineering--it's all we do. Since 1933, this single-minded focus has allowed us to make some unique commitments to both clients and staff. It has opened the door to the very best talent in the water industry, innovative water solutions, unparalleled client service, and above all, a...

ENFRA is a national energy infrastructure and Energy-as-a-Service provider delivering vertically integrated engineering, construction, maintenance, asset management, and energy solutions. It serves mission-critical sectors including healthcare, higher education, and data centers, helping clients achieve measurable energy savings, reduce emissions, and build resilient infrastructure nationwide. Its mission is to deliver innovative solutions that empower customers and promote a sustainable future.

Associated Electric Cooperative Inc. is owned by and provides wholesale power to six regional and 51 local electric cooperative systems in Missouri, northeast Oklahoma and southeast Iowa that serve more than 900,000 customers. AECI is a cooperative guided by the seven cooperative principles that reflect the best interests of members: voluntary and open membership; education, training and information; democratic member control;...

CES Power provides temporary power generation, distribution, and HVAC solutions for large-scale events and industrial projects. It supplies event infrastructure, including power systems, climate control, and uninterrupted power solutions, to customers across North America and Europe. The company supports festivals, film and broadcast productions, sporting events, and other complex projects, and also promotes sustainable, zero-emission alternatives. Its offering combines rental...

Stowers Machinery Corporation is East Tennessee's Caterpillar equipment distributor, offering sales, rentals, parts, and service for heavy machinery, engines, and power generation equipment. They serve various industries including construction, mining, and manufacturing.

Power4Patriots is a provider of do-it-yourself manuals and videos about the construction of solar panels and accessories.

Centrus Energy is a trusted American supplier of nuclear fuel and services for the nuclear power industry, helping meet the growing need for clean, affordable, carbon-free energy. Since 1998, the Company has provided its utility customers with more than 1,850 reactor years of fuel, which is equivalent to more than 7 billion tons of coal. With world-class technical and engineering...

Atmos Energy Corporation, an S&P 500 company headquartered in Dallas, is the country’s largest natural gas-only distributor. We safely deliver reliable, affordable, efficient and abundant natural gas to more than 3 million distribution customers in over 1,400 communities across eight states located primarily in the South. As part of our vision to be the safest provider of natural gas services,...

Prologis is the global leader in logistics real estate. In partnership with top manufacturing and distribution companies (e.g., Amazon, BMW, DHL, FedEx, Pepsi), we ensure timely delivery of the products that make modern life possible.

Since day one, Nextracker’s mission has been to transition the world to affordable, renewable power, by developing the highest-performing and resilient solar tracking technologies and software in the market for our customers. From sustainable tracker solutions that conform to uneven terrain and withstand extreme weather, Nextracker systems have resilience built in. Nextracker leads the solar industry with solar tracker technologies that...

Kanadevia Inova is a global greentech leader specializing in Waste to Energy (WtE) and Renewable Gas (RG). It delivers turnkey systems that transform waste into valuable resources through cutting-edge technology, focusing on the energy transition and circular economy to create a future free of wasted waste.

PJM Interconnection manages the high-voltage electric system that provides power to 65 million people in all or parts of 13 states and the District of Columbia. It's the largest power grid in North America. As a neutral, independent party, PJM administers a competitive wholesale electricity market. PJM’s long-term regional planning process provides a broad, interstate perspective that identifies the most effective...

Shoals Technologies Group, Inc. is a leading provider of electrical balance of systems (EBOS) solutions for solar, energy storage, and eMobility. Since its founding in 1996, the Company has introduced innovative technologies and systems solutions that allow its customers to substantially increase installation efficiency and safety while improving system performance and reliability. Shoals Technologies Group, Inc. is a recognized leader...