The ISO (Grid Operator) is working closely with state agencies and plant owners in evaluating the reliability impacts of implementing this regulation to ensure it does not compromise electricity grid

The ISO (Grid Operator) is working closely with state agencies and plant owners in evaluating the reliability impacts of implementing this regulation to ensure it does not compromise electricity grid reliability. Gas-fired generation provides ?flexible capacity? because its fast dispatching capability complements fluctuations in wind and solar power. The unique operating characteristic is essential for maintaining reliability and ensuring success of green energy goals in California.

http://www.businesswire.com/news/home/20120322006825/en/Summer-Grid-Outlook-Complicated-Extended-Outage-Nuclear

 
See attached reports for details.