Southern California had the highest reported spot power price at $52.46/MWh. Louisiana had the lowest at $36.00/MWh.
Houston had the biggest change, increasing more than 20% to $51.00/MWh.
Nymex energy futures prices for October delivery of natural gas and coal were $3.62/mmBtu and $51.58/ton respectively.
A link to the full EIA daily price report is available at http://www.eia.gov/todayinenergy/prices.cfm