Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2015	May. 15, 2015
Document And Entity Information [Abstract]
Document Type	10-Q/A
Amendment Flag	true
Amendment Description	The purpose of this Amendment No. 1 (the “Amendment”) to the Quarterly Report on Form 10-Q of Solar Power, Inc. for the quarter ended March 31, 2015, filed with the Securities and Exchange Commission on May 15, 2015 (the “Form 10-Q”), is solely to respond to certain comments of the staff of the SEC on “Item 1 Financial Statements.” No other changes have been made to the Form 10-Q. This Amendment speaks as of the original filing date of the Form 10-Q, does not reflect events that may have occurred after the original filing date, and does not modify or in any way update disclosures made in the original Form 10-Q.
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	SOPW
Entity Registrant Name	Solar Power, Inc.
Entity Central Index Key	0001210618
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		602,979,944