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Electricity Monthly Update

With Data for September 2017  |  Release Date: Dec. 1, 2017  |  Next Release Date: Dec. 27, 2017

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End Use: September 2017


Retail rates/prices and consumption

In this section, we look at what electricity costs and how much is purchased. Charges for retail electric service are based primarily on rates approved by state regulators. However, a number of states have allowed retail marketers to compete to serve customers and these competitive retail suppliers offer electricity at a market-based price.

EIA does not directly collect retail electricity rates or prices. However, using data collected on retail sales revenues and volumes, we calculate average retail revenues per kWh as a proxy for retail rates and prices. Retail sales volumes are presented as a proxy for end-use electricity consumption.

Average revenue per kWh by state



Average revenue per kilowatthour figures decreased in 17 states in September compared to last year. The largest declines were found in New Jersey (down 4.3%), Rhode Island (down 4.1%), and Maryland (down 3.5%). Thirty three states and the District of Columbia increased revenue per kilowatthour compared to last year, led by Florida (up 9.3%), Connecticut (up 7.5%), and Minnesota (up 7.3%).


Total average revenues per kilowatthour were up 2.3% to 10.93 cents in September compared to last year. The Residential sector rose the most, up 3.3%. This was followed by the Commercial and Industrial sectors, up by 2.7% and 1.0%, respectively. The Transportation sector was relatively flat, only decreasing by 0.1%. Retail sales were down 5.6% for the month, with all sectors seeing a decrease from the previous year. The Residential sector showed the greatest decline, down 8.2%. The Commercial sector followed with a 4.2% drop. The Industrial and Transportation sectors fell by 3.7% and 2.8%, respectively.

Retail sales



State retail sales volumes were down in 37 states and the District of Columbia in September compared to last year. Connecticut showed the largest year-over-year decline, down 15.5%. Tennessee and New Hampshire had the next largest declines, down 14.7% and 12.1%, respectively. Thirteen states had retail sales volume increases in September, led by Nevada (up 5%), Montana (up 4.7%), and Arizona (up 4.3%).


Cooling Degree Days (CDD) were down in 33 states and the District of Columbia compared to last September. This was wide-spread over the eastern half of the country, with the largest year-over-year decrease found in Rhode Island (it had a decrease of 102 CDDs, down almost 50%). West Virginia and Virginia had the next largest decreases, down 45.3% (92 CDDs) and 44.8% (130 CDDs), respectively. Fifteen states had an increase in CDDs from the prior year. The states with the largest percent growth were nearly all located in the Northwest. The following states had over 100% gain in CDDs: Montana (up over 200%), Wyoming (up over 118%), Oregon (up over 111%), and Idaho (up 107%).

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