GreenSpark Solar | #1 NYS Installer, #1 Community Solar EPC in
Named the #1 Community Solar EPC in the U.S. and the #1 solar installer in New York by Solar Power World, GreenSpark delivers high-performance solar, energy storage, and
In 2025, Canadian Solar ranked #1 on the list of best solar panels for homes, further solidifying its reputation in the industry. Illuminate USA is an American company, but it operates as a joint venture between Invenergy, a U.S.-based energy company, and LONGi Solar, one of the largest solar manufacturers in China.
The company's main manufacturing facility is located in Pataskala, Ohio, where over 1,000 workers produce high-quality solar panels. With an annual capacity of 5 GW, Illuminate USA plays a crucial role in supplying American-made solar panels for both residential and commercial projects.
Qcells is the second-largest manufacturer of solar panels in the U.S., the second most-popular brand on the EnergySage marketplace, and one of the most popular residential solar panel manufacturers, American-made or otherwise. While Qcells is based in South Korea, the company recently opened a solar panel manufacturing plant in Georgia.
Like Illuminate USA, T1 Energy is another example of a foreign-owned company manufacturing solar panels in the United States. The T1 Energy facility in Wilmer, Texas, was originally built under the name Trina Solar, a Chinese solar giant.
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