Represents the maximum amount of guarantees provided by related party for debt.

No definition available.

Name:	sol_MaximumGuaranteesProvidedForDebtsByRelatedParty
Namespace Prefix:	sol_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=sol_ChiefExecutiveOfficerAndHisFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=sol_ChampionEraEnterprisesLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

RELATED PARTY BALANCES AND TRANSACTIONS (Narrative) (Details)	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2015 CNY (¥)
RELATED PARTY BALANCES AND TRANSACTIONS [Line Items]
Maturity term	3 months
Mr. Xianshou Li and his family [Member]
RELATED PARTY BALANCES AND TRANSACTIONS [Line Items]
Maximum guarantees provided by related party for short-term and long-term borrowings from various domestic banks	$ 318,008,380	$ 292,380,900	¥ 2,030,000,000	¥ 2,060,000,000
Champion era enterprises limited [Member]
RELATED PARTY BALANCES AND TRANSACTIONS [Line Items]
Interest rate (as a percent)	5.00%			5.00%