SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2017

SUMMARY OF PRINCIPAL ACCOUNTING POLICIES

Schedule of expected useful lives of property and equipment

Buildings	20 years
Leasehold improvements	Over the shorter of the lease term or their estimated useful lives
Machinery	5-10 years
Furniture, fixtures and equipment	5 years
Motor vehicles	5 years

Schedule of useful life intangible assets

Power purchase agreement ("PPA")	Over the estimated useful lives
Technical know-how	10 years
Computer software	1-10 years

Summary of the Company's other operating income, net

	Years Ended December 31,
	2015			2016			2017
	$			$			$
Net gain on disposal of solar power system		—			(47,899	)		(27,803	)
Net loss on disposal of property, plant and equipment		1,801			8,094			1,960
Government grants		(7,193	)		(2,734	)		(6,473	)
Business interruption insurance compensation		—			—			(15,238	)
		(5,392	)		(42,539	)		(47,554	)

Schedule of gross prepayments made to individual suppliers in excess of 10% of total advances to suppliers

	At December 31, 2016		At December 31, 2017
	$		$
Supplier A		18,260		18,260