Natural gas-fired power generation fell by 10 percent in September compared to September 2012, while coal-fired generation increased 5 percent in year-over-year comparisons, according to a report from Genscape.
The numbers continue a trend of coal regaining some of the market share it lost in 2012. According to Genscape, year-to-date coal-fired generation is 6 percent higher than 2012, while natural gas is 9 percent lower. Total power demand for the year, while slightly increased in September in year-over-year comparison, is down 1 percent for the entire year so far.
Strong renewable and nuclear generation also helped distance gas, according to Genscape. In the California ISO, wind generation was up 77 percent from last September, primarily because of the increase of capacity in the region.