- The percentage of renewables in the mix is 19% for PSNH and 12% region-wide. Hydropower (9%) and wood (5.7%) are the biggest sources. Solar is less than 1%; other minor sources include landfill gas, wind, municipal waste, and biomass.
- The non-renewables mix at 80% for PSNH includes: coal (60.9%), gas (11.8%), nuclear (5.9%), oil (<1%), jet (<1%).
- The air emissions -- carbon dioxide, nitrogen oxide, sulfur dioxide -- for the PSNH mix are much worse than for the New England mix, presumably because of the high proportion of coal (60%) in the PSNH mix versus 11.8% coal in the regional mix.
- Although the New England mix has less renewable sources in the mix (12%), the air emissions from the mix is far better, with a greater reliance on nuclear and gas and much less on coal.
Friday, March 30, 2012
Our electric company - Public Service of New Hampshire (PSNH) -- included an interesting chart with our most recent billing. A few years ago the NH Legislature passed a law requiring electric suppliers to disclose all energy sources and their air emissions characteristics. Here is the chart for our electricity supply, which comes from the New England power grid via PSNH (click on chart to enlarge) -- it is a little light so perhaps hard to read.