This is how your link describes deregulation in California: "very limited and is conducted by a lottery system called DirectAcccess" There was a semi-deregula

This is how your link describes deregulation in California: "very limited and is conducted by a lottery system called DirectAcccess" There was a semi-deregulation in 1996, but it was largely rolled back in 2001. So any price data post data 2001 should be bucketed in regulated.