Solar CIS, which stands for copper, indium and selenium, are solar photovoltaic (PV) modules that leverage the latest developments in thin-film technology.

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At nearly 14%, the efficiency of the thin-film panels which are made from copper, indium, gallium and selenium (CIGS), is close to that of silicon, albeit being much cheaper to produce.

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The company is installing equipment at the new factory in Portland and bringing the machines online to roll out its solar panels, which contain a thin layer of solar cells made with copper, indium, gallium and selenium (CIGS).

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Among the technologies are new ways of making already-commercialized formulations, like amorphous silicon and cadmium telluride, and newer formulations like CIGS, named for the elements it is made out of, copper, indium, gallium and selenium, and CIS, which leaves out the gallium.

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