Sol Systems, a solar investment and financing company based in Washington, DC, says it provided most of the investment for the projects. It did not make total cost public.

"Tax structured investments have been critical to driving capital into the solar asset class," says Sol Systems chief executive Yuri Horwitz.

Sol Systems managed the investment on behalf of an insurance client as part of the firm's tax equity initiative to produce secure, sustainable solar investments for banks, insurance companies, utilities, and other large clients.

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