INCOME TAXES (Schedule of Aggregate Amount and Per Share Effect of the Tax Holiday) (Details) - USD ($)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Aggregate amount and per share effect of the Tax Holiday
Aggregate	$ 93,403		$ 4,081,529
Per share effect -basic (in dollar per share)			$ 0.02
Per share effect-diluted (in dollar per share)			$ 0.02

The amount of income taxes expense (benefit) from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

No definition available.

Name:	sol_IncomeTaxHolidayAggregateAmount
Namespace Prefix:	sol_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration