2004 Foundation of CSUN as China Sunergy Co. Ltd., a subsidiary of China Electric Equipment Group (CEEG)
2005 Installation of the first 32 MW solar cell production line.
2006 Solar cell production reaches 192 MW making CSUN one of the world's leading photovoltaic companies.
2007 CSUN is successfully listed on NASDAQ stock exchange.
CSUN’s partner company China Electric Equipment Group (CEEG) sets up its PV business by building two module plants.
2008 Establishment of CSUN’s European headquarters in Germany.
Successful commercial production of selective emitter (SE) solar cells making CSUN a pioneer in this field.
Cell production capacity reaches 320 MW.
2010 CSUN enters the solar module market by taking over CEEG’s two module production facilities.
Cell production capacity reaches 400 MW, module production capacity is 480 MW.
2011 Establishment of CSUN’s US office.
CSUN is listed among Deloitte’s Top 20 Chinese clean technology companies.
Cell production capacity increases to 600 MW, module production capacity to 980 MW.
2012 CSUN signs a three-year strategic cooperation agreement with DuPont.
CSUN signs a joint venture agreement with Turkish partner Seul Energy and sets up cell and module production in Istanbul.
Cell production capacity grows to 1 GW, module production capacity to 1.2 GW.
2013 Official inauguration and start of mass production in the new factory in Istanbul.
2014 KSUN, a South Korea-based high efficiency solar cells plant started operation.
2015 Vietnam-based manufacturing facility started mess production of solar cells and modules.
CSUN shipped accumulative of 4.0 GW of solar products.