Since 1923, Alterman has provided electrical construction on many of San Antonio and Austin's most impressive landmarks and contemporary structures. By integrating cutting-edge technologies with core values and disciplines, Alterman has successfully met the expanding needs of commercial and industrial clients and has earned the confidence of Owners, Construction Managers, General Contractors, Architects, and Engineers. We are an EC&M Top 50 market leading electrical contractor focused on safety, quality, and customer satisfaction with a strong commitment from our employee owners to excellence throughout the organization. Alterman provides complete installation expertise, 24/7 service, in-house design / build and Building Information Modeling (BIM) and fast-track construction for a wide range of electrical needs, as well as voice and data communications systems, video, access controls, security and surveillance systems and alternative energy solutions for LEED certification.

Since inception in 1966, Big State Electric Ltd. leads the construction industry by providing top notch electrical installations with superior workmanship. For decades we have fostered relationships in South/Central Texas working with Owners, Architects, Engineers, General Contractors and World Wide corporations.. Spanning the gambit form multi-million dollar electrical projects to service work, we ensure that our client's needs are met. We emphasize quality, service, and safety, from the office to the field. Our reputation is built on professionalism, morals, and ethics. Our company foundation is rooted in old fashion business principals that may seem old school to some, but to us is the only way to do business. We utilize state of the art Electrical Technology, Safety, BIM and Auto Cad in our business. We also perform 98% of our work in house, including Excavation, Fire Alarm, Sound Systems, Security, Fiber Optics, Controls, Automation and Testing. We have expertise in a diverse outlet of of commercial electrical. Including facets such as Office buildings, Hospitals, Call Centers, Data Centers, Schools, Higher Learning Facilities, Industrial Applications and Central Offices for Communication Companies.

D&H United Fueling Solutions is a leading supplier of petroleum fueling and EV charging system equipment, installation, and service across the United States. We are a distributor and service provider for many of the industry’s most respected and trusted equipment brands. With 35 branch offices and over 1,400 employees operating throughout the United States, D&H United is committed to providing top-notch service to its clients. Tanknology, a subsidiary of D&H United, is the world’s largest provider of tank testing and environmental compliance services for petroleum systems. Tanknology provides compliance services at more than 100,000 sites annually. Continuously growing, in 2024 D&H United Fueling Solutions was named to the prestigious Inc. 5000 list of America’s fastest growing private companies for the third consecutive year. Our continuous growth is a testament to our dedication to providing quality service to our customers. Whether you are a site operator, C-store developer, distributor, or petroleum reseller, D&H United would love to partner with you to address any need your site may have. With industry-leading service, cutting-edge technology, turn-key compliance solutions, and knowledgeable staff, D&H United is the national leader in keeping communities moving.

Enertech is an industry leader in engineering, technology deployment, and construction services for the wireless industry. Our proven track record for safety and quality position us to work with the nation’s major wireless carriers, tower owners, and technology providers. As one of the largest wireless infrastructure companies in the industry, our breadth of knowledge and technical expertise help our customers design, build, optimize, and maintain reliable wireless networks. Safety. Quality. Commitment. Safety is who we are. Quality is what we do. Commitment is what Enertech offers you.

Hellas, headquartered in Austin, Texas, is America’s largest sports contractor specializing in the manufacturing, construction, and installation of sports surfaces and amenities. Hellas manufactures its own products, as well as owns and operates its own heavy construction equipment, making the company a true one-stop-shop for turf, tracks, courts, and sports lighting projects. In addition to hundreds of K-12 and collegiate sports construction projects, The Hellas Group has built NFL practice and playing fields for the Dallas Cowboys, Houston Texans, Las Vegas Raiders, Los Angeles Rams, Los Angeles Chargers, Kansas City Chiefs, Tennessee Titans, Washington Commanders, Jacksonville Jaguars, Miami Dolphins, and Green Bay Packers. While specializing in the general construction of sports facilities and synthetic surfaces, Hellas also champions innovative artificial turf manufacturing, base construction, field, track and tennis planning, installation and maintenance. Hellas is the only fully integrated sports construction company and controls all business operations to take its products straight to the end-user including marketing, sales, quality control, project management, maintenance, and warranty.

Asphalt Paving contractor for the communities of Austin and San Antonio. We bring over 125 years of experience to the job!

From facility design to daily management to work release programs, LaSalle Corrections and Southwestern Correctional offers multi-discipline solutions for everything corrections.

American Roofing & Metal Co., Inc. is a full-service commercial roofing contractor. Our expertise extends from all types of roofing installation to metal fabrication and roof maintenance. Our strengths lie in leadership, quality of workmanship, our long-term employees and above all – superior customer service.

For over 48 years, Spectrum Lighting, Inc. has provided Austin and its surrounding territories with premier customer service, quality products, and lighting designs. Our knowledgeable team helps implement sustainable lighting applications and controls solutions. We are dedicated to creating an innovative lighting environment while maintaining budget and design goals. Team up with Spectrum Lighting, Inc. - Austin and be light years ahead of the others!

Freedom Solar Power is the leader in turnkey solar installations in Texas, Colorado, Florida, Virginia and North Carolina, providing high quality, cost-effective, reliable solar solutions for residential and commercial markets. Based in Austin since 2007, Freedom Solar has installed more than 157 megawatts of solar panels for thousands of homeowners and hundreds of top companies such as Whole Foods, Office Depot, and the University of Texas. Freedom is number 338 on Inc. Magazine's list of the top 500 fastest-growing private companies in America, is recognized as the number one residential solar installer in Texas by Greentech Media (2017-2019), and named a Best Places to Work by the Austin Business Journal in 2019 and by the Houston Business Journal in 2020. EXPERIENCE: Our installation team is NABCEP certified and has over 30 years of experience installing complex, custom projects in the residential, commercial, and government sectors. QUALITY: We guarantee the highest standards in residential and commercial construction. We specialize in roof mounts, ground mounts, pole mounts, carport/parking structures, and off-grid battery back-up systems. CUSTOMER SERVICE: We handle every aspect of solar power installations—including financing, technology evaluation, engineering and design, construction, monitoring, and ongoing maintenance and support—to ensure the most efficient and reliable solution and exceed customers'​ expectations.

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