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SEIA Member Directory

SEIA Members represent every aspect and vertical within the solar industry, from manufacturers and project developers, to installers and financiers. Browse the list below to find a SEIA member!

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Technicians for Sustainability is a mission driven business dedicated to helping people and businesses live and operate more sustainably.


As a leader in this growing solar market, Tectonic has established itself as a multi-disciplined professional service firm that can handle every aspect of a solar project from concept to completion. Tectonic and its staff have been providing professional services for various energy providers for over 30 years. We provide owners the ability to generate efficient site renewable energy and decrease overall energy costs. Tectonic is dedicated to designing efficient and high quality solar and commercial systems. We have the experience and capacity to efficiently evaluate potential sites, effectively negotiate the regulatory climate and ensure engineering and construction is completed within the anticipated schedule and has vast experience with various types of solar installations. In addition, Tectonic has provided permitting, environmental studies, as well as civil, structural and geotechnical engineering.

Omaha NE


Tenaska is one of the largest private, independent energy companies in the United States, with a proven record of success in development, design, financing, construction, ownership and operation of power plants and in energy marketing, particularly natural gas and electric power. Founded in 1987, it has a solid reputation for: • Innovative expertise • Long-term reliability • High-quality customer service • Ability to capitalize on opportunities and deliver tangible results As a private, independent company, Tenaska has the knowledge, resources and the flexibility to meet growing energy demands in a changing energy business climate. Tenaska: • Develops, constructs, owns and operates non-utility power plants, customizing plant size, design and fuels to meet customer needs • Markets natural gas, electric power, biofuels and related agriculture commodities, and natural gas fuels • Manages private equity investments in the power and midstream sectors, including risk management, acquisition and operations services • Engages in natural gas exploration, production and associated transportation systems This diverse base offers customers the advantage of expertise across the energy spectrum, leveraging strengths that include logistics, capital solutions and conservative risk management. Tenaska’s people are known throughout the industry for fair and ethical dealing and as early adapters able to respond rapidly to changing markets. They are behind Tenaska’s well-documented reputation for providing safe, reliable electricity; for being environmentally and socially responsible; and for demonstrating dedication and commitment to the communities where it does business.

Project Developer
Long Branch NJ

Terra Posts PV

Terra Posts PV is a nationwide service specializing in ground support post installations for utility scale solar energy facilities. We own and operate a fleet of industry specific post ramming machines and will deploy anywhere in the US. We pride ourselves on delivering quality installations, on time and always cost effective to our clients. Schletter Trained operators, mission driven and dedicated to deadlines. Our mission is to be the most efficient and cost effective service in our industry sector.

Olathe KS


Terracon is a 100 percent employee-owned consulting engineering firm providing quality services to clients. Since 1965, Terracon has evolved into a successful multi-discipline firm specializing in: Environmental, Facilities Geotechnical, and Materials

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