Flexible Solar Services, Proven Performance
Engineering
Procurement
Construction
Certified Union Craft Labor
Pile Driving Fleet
Certified Safety & QA Team
Supporting Solar Growth
Day & Zimmermann (D&Z) entered the solar market in 2008 designing a 120-kW roof-mounted system for the U.S. Mission to the United Nations in Geneva, Switzerland. Over the following years, we delivered dozens of successful installations, including parking canopies and a variety of roof- and ground-mounted systems.
In 2021, building on over 40 years of trusted partnerships with utility clients in traditional power generation positioned us to actively pursue utility-scale solar projects, culminating in our selection as the primary contractor for 200 MW of utility-scale solar installations in West Virginia.
In 2023, D&Z made the strategic decision to begin delivering solar as a full-service engineering, procurement, and construction (EPC) provider. With each successful project, we expand our capacity, sharpen our execution, and reinforce our long-term commitment to supporting the energy transition alongside our utility partners.
Committed to Safety in Solar
Safety is our number one core value. Nothing is more important – not profit, not schedule – nothing. We care about safety because we care about people. For more than a century, we have shared a personal and professional commitment to protect the safety and health of our employees, customers, partners, subcontractors, and the communities we serve. We do this by building strong relationships with our clients, union leadership and our skilled craft employees.
Solar Racking Installation Experience
ATI
NexTracker
Solar Flex Rack
PVH
GameChange
OMCO
D&Z Ranked #37 in Solar Power World’s 2024 Top EPC Solar Contractor
Our place in the top 100 out of nearly 400 solar contractors underscores our commitment to a more sustainable future and to helping our customers ensure solar is an important part of our country's energy mix.
“We continue to make large investments in solar and renewables not just because it is the right thing to do, but because our customers in power generation and government are committed to a more sustainable future. It is part of how we support our partners and earn their business every day.”
– JASON DUNAWAY, PRESIDENT, DZMC UNION OPERATIONS
Our Success
.49
Total Recordable Injury Rate
16,000+
Craft Professionals Employed
123
Years of experience
~1 GW
Project Experience
Investment in Solar Energy
Our leadership knows that in the U.S. and around the world, renewable energy sources will not be the exception but the rule. That’s why we are hiring and empowering project leadership teams with solar and storage experience, investing in capital equipment such as GPS equipped pile drivers, and pursuing acquisitions of companies with resumes in the renewable space. Our goal is to be your preferred solar EPC partner from the first project and strive to continually improve and support your growth.
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