EX-8.1 2 a2209108zex-8_1.htm EX-8.1
QuickLinks -- Click here to rapidly navigate through this document

EXHIBIT 8.1

LIST OF SUBSIDIARIES

(As of April 27, 2012)

Name of Significant Subsidiaries		Country of Incorporation		Ownership Interest
CSI Solartronics (Changshu) Co., Ltd.		People's Republic of China			100	%
CSI Solar Technologies Inc.		People's Republic of China			100	%
CSI Solar Manufacture Inc.		People's Republic of China			100	%
CSI Solar New Energy (Suzhou) Co. Ltd.		People's Republic of China			100	%
Canadian Solar Manufacturing (Luoyang) Inc., formerly known as CSI Central Solar Power Co., Ltd.		People's Republic of China			100	%
Canadian Solar Manufacturing (Changshu) Inc., formerly known as Changshu CSI Advanced Solar Inc.		People's Republic of China			100	%
CSI Cells Co., Ltd.		People's Republic of China			100	%
Canadian Solar (USA) Inc.		United States of America			100	%
CSI Project Consulting GmbH		Germany			70	%
Canadian Solar Japan K.K.		Japan			90.67	%
Canadian Solar Solutions Inc.		Canada			100	%
CSI Solar Power (China) Inc.		People's Republic of China			100	%
Canadian Solar EMEA GmbH, formerly known as Canadian Solar (Deutschland) GmbH		Germany			100	%
Canadian Solar Manufacturing (Ontario) Inc.		Canada			100	%
Canadian Solar (Australia) Pty, Ltd.		Australia			100	%
Canadian Solar International Ltd.		Hong Kong			100	%
Canadian Solar O&M (Ontario) Inc.		Canada			100	%
SunE Sky GP First Light III Ltd.		Canada			100	%
SunE Sky First Light III LP		Canada			100	%
CSI-Cenergy Holdings, LLC		United States of America			62.5	%
Suzhou Sanysolar Materials Technology Co. Ltd.		People's Republic of China			80	%
Canadian Solar South East Asia Pte., Ltd.		Singapore			100	%
Canadian Solar Manufacturing (Suzhou) Inc.		People's Republic of China			61	%

QuickLinks

EXHIBIT 8.1

LIST OF SUBSIDIARIES (As of April 27, 2012)