Press Release: 03.30.2022

McCarthy Completes Construction of Michigan’s Largest Solar Farm in Shiawassee County, Michigan

346.9MW fully commissioned Assembly Solar plant provides clean energy, economic impact  

solar panels

The Renewable Energy & Storage group of McCarthy Building Companies announces the recent completion of construction and full commissioning of the 346.9MWdc/240MWac Assembly solar farm in Shiawassee County, Michigan. The state’s largest solar farm was constructed in three phases on 1,200 acres and includes nearly 800,000 bifacial solar modules.

Solar Power in Michigan Takes A Big Step Forward

The first phase, Assembly I, is a 72.3MWdc/50MWac facility that completed construction in 12 months in December 2020. Construction of the 161 MWdc/110MWac Assembly II, a 23-month construction project, achieved commercial operations in December 2021 and Assembly III, which is a 113.6 MWdc/79MWac solar facility that began construction in November 2020 and reached commercial operations earlier this month. All three phases of the Assembly’s construction, with several phases happening concurrently, were completed over a 26-month period. The Assembly solar farm project developer is owned by an affiliate of D. E. Shaw Renewable Investments (DESRI) and was developed in a partnership between DESRI and Ranger Power, a utility-scale solar development company based in Chicago and the largest independent solar developer in Michigan. McCarthy served as engineering, procurement, construct (EPC) contractor.

“DESRI is thrilled to have completed construction and achieved commercial operation on the Assembly projects, and appreciates the ongoing partnership with McCarthy. Projects like Assembly create an opportunity to keep construction jobs local while expanding cost-effective renewable energy capacity in communities across the Midwest,” said Chris Clevenger, chief operating officer of DESRI.

Shiawassee County Solar Farm Project By The Numbers

The project was completed with the support of approximately 400 craft workers, the majority of whom were recruited from the local area. In addition to the jobs created by the project, the tax revenue from Assembly provides tax funding for schools, libraries, fire and police services, roads, community services and more, bringing substantial economic benefit to the local economy. McCarthy’s partners on the project include TMEIC inverters, Longi modules, Nextracker trackers and WEG transformers. 

“It has been very rewarding to be part of this remarkable solar project, particularly from the standpoint of being able to introduce many craft workers to the rapidly growing solar construction industry,” said Phil Radin, project director for McCarthy Building Companies. “The opportunities that exist for communities like Shiawassee County and others across the Midwest to establish a sustainable energy infrastructure while supporting people in their career development are immeasurable. Thanks to the leadership of our partners Ranger Power and DESRI for allowing us to introduce so many to our industry and bring long-term benefits to this community.”   

The Assembly solar farm is expected to reduce carbon dioxide emissions by 394,000 tons annually in the short term – equivalent to the yearly emissions of approximately 77,000 cars while powering the equivalent of around 45,000 homes.

McCarthy’s Renewable Energy & Storage group is currently constructing or has completed nearly 70 utility-scale clean energy projects in communities across the country since 2010, delivering a combined capacity of more than 6.6 gigawatts (GW) of clean energy production and over 515 MW/1350 MWh of energy storage. Nationally, McCarthy provides EPC services on utility-scale solar projects for private solar developers and utilities, helping them deliver cost-effective clean energy to the communities they serve.

Ranger Power has successfully permitted over 2,000 MW of projects throughout the Midwest. By the end of 2023, Ranger anticipates that nearly 1 GW of projects developed by the company will be in commercial operation. Ranger Power prides itself on taking a community-first approach by focusing on community engagement, transparency and responsible solar development.

About D. E. Shaw Renewable Investments

D. E. Shaw Renewable Investments (DESRI) and its affiliates develop, acquire, own, and operate long-term contracted renewable energy assets in the U.S. DESRI's portfolio of operating and in-construction renewable energy projects currently includes more than 65 contracted solar and wind projects representing more than 6,000 megawatts of aggregate capacity. DESRI is a member of the D. E. Shaw group, a global investment and technology development firm with more than $60 billion in investment and committed capital as of December 1, 2021, and offices in North America, Europe, and Asia.  Please visit for more information about DESRI.

About McCarthy Building Companies

McCarthy Building Companies, Inc. is the oldest privately held national construction company in the country – with more than 150 years spent collaborating with partners to solve complex building challenges on behalf of its clients. With an unrelenting focus on safety and a comprehensive quality program that span all phases of every project, McCarthy utilizes industry-leading design phase and construction techniques combined with value-add technology to maximize outcomes. Repeatedly honored as a Best Place to Work and Healthiest Employer, McCarthy is ranked the 9th largest domestic builder (Engineering News-Record, May 2021). With approximately 3,700 salaried employees and craft professionals, the firm has offices in St. Louis, Atlanta; Collinsville, Ill.; Kansas City, Kan.; Omaha, Neb.; Phoenix; Las Vegas; Denver; Dallas, Houston; and San Diego, Newport Beach, San Francisco, San Jose and Sacramento, Calif. McCarthy is 100 percent employee-owned.

More information about the company is available online at or by following the company on Facebook, Twitter, LinkedIn and Instagram.


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