Some older but still meaningful data on unit costs of energy:
http://www.awea.org/pubs/factsheets/Cost2001.PDF Fuel Levelized costs (cents/kWh) (1996) Coal 4.8-5.5 Gas 3.9-4.4 Hydro 5.1-11.3 Biomass 5.8-11.6 Nuclear 11.1-14.5 Wind (without PTC) 4.0-6.0 Wind (with PTC) 3.3-5.3 Horace Heffner
