This list of companies manufacturing copper indium gallium selenide solar cells (CIGS) includes a number of companies, some of which have significantly reduced or completely closed down production:
Ascent Solar Technologies
Avancis (Avancis, module producer)
Axuntek Solar Energy Co. Ltd. (small size manufacturer with own production, R&D)
Flisom (founded in 2005 as a spin-off company of ETH Zürich, Switzerland)
Global Solar Energy (module producer, US-based subsidiary of Hanergy)
Hanergy-Solibro (former subsidiary of Q-Cells)
Hulk Energy Technologies (HULKet, module producer, Taiwan)
IBM
International Solar Electric Technology
Manz (turnkey CIGS fab)
Miasolé
Nuvosun
Precursor Energetics (develops CIGS absorber materials, located in Santa Clara, CA, US)
Siva Power
Solar Frontier (subsidiary of Showa Shell Sekiyu)
Stion Corp
Veeco Instruments Inc
sunplugged
Wonik IPS (CIGS Turnkey Solution)
Former companies
HelioVolt
Nanosolar
Odersun
Soltecture (previously Sulfurcell)
Solyndra
TSMC Solar (module producer, wholly owned subsidiary of Taiwanese TSMC)
