Wednesday, December 5, 2012

September Electricity Data

The EIA September report showing net generation of electricity by energy source shows both gas and coal dipping in market share.  Gas decreased by one percentage point from the previous month to 32.3%, while coal dropped by the same margin to 37.6%.  Other energy sources increased by 1.9% to 30.1%.  Year-to-date versus 2011, gas is up 6.7 percentage points to 31.4%, while coal is down 5.8 points to 36.5%.



Same data as above, calmer picture:


To put these numbers in context, total 2012 electricity consumption through nine months was 3.102 million kWh, which was 1.6% lower than the same period in 2011.

The decrease in monthly market share by coal has more to do with the fact that September is a shoulder season for utilities when electricity demands temporarily diminish.  At the same time, some of the other energy sources such as renewables and nuclear continue to produce power at a relatively steady pace, which cuts into the market share of coal and gas.

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