California State Prison, Solano (SOL) is a male-only state prison located in the city of Vacaville in Solano County, California, adjacent to California Medical Facility. The facility is also referenced as Solano State Prison, CSP-Solano, and CSP-SOL.
SOL's include the following facilities, among others:
As of fiscal year 2006/2007, SOL had a total of 1,308 staff and an annual operating budget of $158.4 million. As of February 2011, it had a design capacity of 2,610 but a total institution population of 5,050, for an occupancy rate of 193.5 percent.
As of July 31, 2022, SOL was incarcerating people at 124.7% of its design capacity, with 3,255 occupants.
The California State Prison at Solano opened in August 1984. SOL was overseen by the warden of California Medical Facility until January 1992, when a separate warden was assigned. By 1998, SOL was so crowded that "emergency triple bunks" were added. In 2008/2009 triple bunking was removed and the gyms by August 2009 were not holding inmates.
A 2001 U.S. District Court ruling and a 2002 U.S. Court of Appeals decision supported the "right of Muslim inmates" at SOL "to attend regular weekly religious services and wear beards in accordance with their faith".