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Consolidated Statements of Cash Flows (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Net loss $ (5,196,000)us-gaap_ProfitLoss $ (32,244,000)us-gaap_ProfitLoss
Depreciation 1,267,000us-gaap_Depreciation 1,283,000us-gaap_Depreciation
Amortization 572,000us-gaap_AmortizationOfIntangibleAssets 571,000us-gaap_AmortizationOfIntangibleAssets
Stock-based compensation expense 356,000us-gaap_ShareBasedCompensation 575,000us-gaap_ShareBasedCompensation
Gain on deconsolidation   (3,537,000)us-gaap_DeconsolidationGainOrLossAmount
Bad debt expenses (reversal) (2,043,000)us-gaap_ProvisionForDoubtfulAccounts 9,303,000us-gaap_ProvisionForDoubtfulAccounts
Loss on extinguishment of convertible bonds 8,907,000us-gaap_GainsLossesOnExtinguishmentOfDebt  
Change in fair value of derivative liability (972,000)us-gaap_IncreaseDecreaseInDerivativeLiabilities  
Loss (Gain) on sales of fixed assets 1,000us-gaap_GainLossOnSaleOfPropertyPlantEquipment (382,000)us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Amortization of loan fees   307,000sopw_AmortizationOfLoanFees
Change in deferred taxes (126,000)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes (150,000)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Impairment of project assets 2,055,000us-gaap_OtherAssetImpairmentCharges 2,816,000us-gaap_OtherAssetImpairmentCharges
Impairment charges   7,500,000us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Non-cash interest expense 1,406,000us-gaap_OtherNoncashExpense  
Other non-cash expense 310,000us-gaap_OtherNoncashIncomeExpense  
Operating income from solar system subject to financing obligation (819,000)sopw_NoncashActivityRelatedToSolarSystemSubjectToFinancingObligation (1,183,000)sopw_NoncashActivityRelatedToSolarSystemSubjectToFinancingObligation
Accounts receivable (1,272,000)us-gaap_IncreaseDecreaseInAccountsReceivable 11,491,000us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable, related party   3,823,000us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties
Notes receivable   (27,931,000)us-gaap_IncreaseDecreaseInNotesReceivables
Costs and estimated earnings in excess of billings on uncompleted contracts (73,742,000)sopw_IncreaseDecreaseInCostsAndEstimatedEarningsInExcessOfBillingOnUncompletedContracts 28,692,000sopw_IncreaseDecreaseInCostsAndEstimatedEarningsInExcessOfBillingOnUncompletedContracts
Restricted cash (337,000)us-gaap_IncreaseDecreaseInRestrictedCashForOperatingActivities  
Project assets (55,066,000)sopw_IncreaseDecreaseInConstructionInProgressCurrent 15,993,000sopw_IncreaseDecreaseInConstructionInProgressCurrent
Inventories 3,838,000us-gaap_IncreaseDecreaseInInventories 1,025,000us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other assets (5,020,000)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets (899,000)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable 37,556,000us-gaap_IncreaseDecreaseInAccountsPayable (5,452,000)us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable, related party (12,853,000)us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties 7,815,000us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties
Note payable 17,809,000us-gaap_IncreaseDecreaseInNotesPayableCurrent  
Advances from customers 17,690,000us-gaap_IncreaseDecreaseInCustomerAdvances  
Income taxes payable 2,942,000us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable  
Billings in excess of costs and estimated earnings on uncompleted contracts (862,000)us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings (4,066,000)us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings
Billings in excess of costs and estimated earnings on uncompleted contracts, related party   (49,000)sopw_IncreaseDecreaseInBillingInExcessOfCostOfEarningsRelatedParty
Accrued liabilities and other liabilities 7,143,000us-gaap_IncreaseDecreaseInAccruedLiabilities (4,089,000)us-gaap_IncreaseDecreaseInAccruedLiabilities
Net cash (used in)/generated from operating activities (56,456,000)us-gaap_NetCashProvidedByUsedInOperatingActivities 11,212,000us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities:    
Proceeds from repayment of notes receivable   7,007,000us-gaap_ProceedsFromCollectionOfNotesReceivable
Issuance of notes receivable   (1,335,000)us-gaap_PaymentsToAcquireNotesReceivable
Proceeds from disposal of fixed assets 1,000us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment  
Investment in affiliate (586,000)us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates  
Acquisitions of property, plant and equipment (147,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (3,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Acquisitions of project assets, (1,295,000)sopw_PaymentsToAcquireProjectAssets  
Acquisitions of new subsidiaries, net of cash acquired (6,652,000)us-gaap_PaymentsToAcquireBusinessesGross  
Acquisition of short-term investments (40,227,000)us-gaap_PaymentsToAcquireShortTermInvestments  
Bank deposit with maturity over three months (8,852,000)us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks  
Proceeds from disposal of short-term investments 12,873,000us-gaap_ProceedsFromSaleOfShortTermInvestments  
Net cash (used in)/generated from investing activities (44,885,000)us-gaap_NetCashProvidedByUsedInInvestingActivities 5,669,000us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities:    
Proceeds from issuance of common stocks 167,848,000us-gaap_ProceedsFromIssuanceOfCommonStock  
Proceeds from issuance of share options 37,000us-gaap_ProceedsFromStockOptionsExercised  
Proceeds from line of credit and loans payable 47,467,000us-gaap_ProceedsFromIssuanceOfDebt 2,666,000us-gaap_ProceedsFromIssuanceOfDebt
Decrease in restricted cash 240,000us-gaap_ProceedsFromRepaymentsOfRestrictedCashFinancingActivities 20,000us-gaap_ProceedsFromRepaymentsOfRestrictedCashFinancingActivities
Proceeds from issuance of convertible bonds 46,000,000us-gaap_ProceedsFromConvertibleDebt  
Payments on line of credit and loans payable (4,250,000)sopw_PrincipalPaymentsOnLoansPayableAndCapitalLeaseObligations (36,285,000)sopw_PrincipalPaymentsOnLoansPayableAndCapitalLeaseObligations
Net cash generated from/(used in) financing activities 257,342,000us-gaap_NetCashProvidedByUsedInFinancingActivities (33,599,000)us-gaap_NetCashProvidedByUsedInFinancingActivities
Effect of exchange rate changes on cash (492,000)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents (74,000)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Increase (decrease) in cash and cash equivalents 155,509,000us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease (16,792,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year 1,031,000us-gaap_CashAndCashEquivalentsAtCarryingValue 17,823,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year 156,540,000us-gaap_CashAndCashEquivalentsAtCarryingValue 1,031,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental cash flow information:    
Cash paid for interest 191,000us-gaap_InterestPaid 4,280,000us-gaap_InterestPaid
Non-cash activities:    
Debt forgiveness from related party   4,582,000us-gaap_DebtInstrumentDecreaseForgiveness
Netting off balance due to/from related party (Note 25) 3,905,000sopw_ExchangeOfNotesReceivableToNotesReceivableRelatedParty  
Contribution of other assets to investment in affiliate (Note 8) 790,000us-gaap_TransferToInvestments 7,536,000us-gaap_TransferToInvestments
Exchange of notes receivable and other assets to acquire project assets in construction (Note 8) 9,448,000sopw_ExchangeOfNotesReceivableRelatedPartyAndOtherAssetsToAcquireConstructionInProgress  
Exchange of investment in affiliate to acquire project assets in construction (Note 8) 8,912,000sopw_ExchangeOfInvestmentsInAffiliatesToAcquireConstructionInProgressAssets  
Common Stock issued in connection with convertible bond extinguishment (Note 16) 11,000,000us-gaap_DebtConversionConvertedInstrumentAmount1  
Derivative liability issued to acquire project assets in construction (Note 8) 983,000sopw_DerivativeLiabilityIssuedToAcquireConstructionInProgressAssets  
Common Stock Issued to Acquire New Subsidiaries [Member]    
Non-cash activities:    
Common stock issued-Non cash activity 78,955,000us-gaap_StockIssued1
/ us-gaap_NoncashOrPartNoncashAcquisitionsByUniqueDescriptionAxis
= sopw_CommonStockIssuedToAcquireNewSubsidiariesMember		  
Common Stock Issued to Acquire Project Assets in Construction [Member]    
Non-cash activities:    
Common stock issued-Non cash activity 3,300,000us-gaap_StockIssued1
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= sopw_CommonStockIssuedToAcquireProjectAssetsInConstructionMember		  
Exchange of Beaver Run Accounts Receivable to Acquire Inventory and Other Assets [Member]    
Non-cash activities:    
Exchange of accounts receivable to acquire inventory and other assets (Note 6) 2,296,000sopw_ExchangeOfAccountsReceivableToAcquireProjectAssetsInConstruction
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= sopw_ExchangeOfBeaverRunAccountsReceivableToAcquireInventoryAndOtherAssetsMember		  
Exchange of Apple Orchard Accounts Receivable to Acquire Inventory [Member]    
Non-cash activities:    
Exchange of accounts receivable to acquire inventory and other assets (Note 6) 7,887,000sopw_ExchangeOfAccountsReceivableToAcquireProjectAssetsInConstruction
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= sopw_ExchangeOfAppleOrchardAccountsReceivableToAcquireInventoryMember		  
Exchange of Seashore Accounts Receivable to Acquire Inventory [Member]    
Non-cash activities:    
Exchange of accounts receivable to acquire inventory and other assets (Note 6) $ 1,395,000sopw_ExchangeOfAccountsReceivableToAcquireProjectAssetsInConstruction
/ us-gaap_OtherSignificantNoncashTransactionsByUniqueDescriptionAxis
= sopw_ExchangeOfSeashoreAccountsReceivableToAcquireInventoryMember