Document and Entity Information	6 Months Ended
	Jun. 30, 2011	Mar. 22, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	Solar Power, Inc.
Entity Central Index Key	0001210618
Document Type	10-Q
Document Period End Date	Jun. 30, 2011
Amendment Flag	true
Amendment Description	To reflect revised accounting treatment for a single solar development project under the financing method as opposed to the percentage of completion method as was previously reported.
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		184,413,923