The June average price per gallon of regular gasoline in California rose 19 cents from May to $3.03. The California premium above the average for the US other than California ($2.06) notched down to 97.5 cents, a 47.3% difference.

In June, California had the 2nd highest gasoline price among the states and DC, behind only Hawaii. Californians paid $1.27 a gallon more than consumers in Mississippi, the state with the lowest price.

The June average price per gallon of diesel in California rose 7 cents from May to $3.31. The California premium above the average for the US other than California ($2.37) rose to 93.6 cents, a 39.5% difference.

In June, California had the 2nd highest diesel price among the states and DC, behind only Hawaii.

The cost premium above the US (other than California) average price for regular gasoline ranged from $0.87 in the Central Valley Region (average June price of $2.93), to $1.05 in Bay Area Region (average June price of $3.11).

California average Residential Price for the 12 months ended April 2020 was 19.72 cents/kWh, 55.8% higher than the US average of 12.66 cents/kWh for all states other than California. California's residential prices remained the 7th highest in the nation.

For the 12 months ended April 2020, the average annual Residential electricity bill in California was $1,238, or 24.5% higher ($244) than the comparable bill in 2010 (the year the AB 32 implementation began with the Early Action items). In this same period, the average US (less CA) electricity bill for all the other states grew only 1.5% ($20).

Residential bills, however, vary widely by region, with the estimated annual household usage in 2018 as much as 59% higher in the interior regions compared to the milder climate coastal areas.

For the 12 months ended April 2020, California's higher electricity prices translated into Residential ratepayers paying $6.1 billion more than the average ratepayers elsewhere in the US using the same amount of energy. Compared to the lowest rate state (Louisiana), California ratepayers paid an additional $8.9 billion.

California average Commercial Price for the 12 months ended April 2020 was 17.09 cents/kWh, 69.7% higher than the US average of 10.07 cents/kWh for all states other than California.  California's commercial prices remained the 3rd highest in the nation.

California average Industrial Price for the 12 months ended April 2020 was 13.74 cents/kWh, 115.0% higher than the US average of 6.39 cents/kWh for all states other than California. California's industrial prices remained the 5th highest in the nation.

For the 12 months ended April 2020, California's higher electricity prices translated into Commercial & Industrial ratepayers paying $11.2 billion more than ratepayers elsewhere in the US using the same amount of energy. Compared to the lowest rate states (Idaho for commercial and Oklahoma for industrial), California businesses paid an additional $14.8 billion.