Two things to note:
- Compare the Growth. Slide A shows US renewable energy projects 1929 to 1970. Slide B shows renewable energy projects, planned or implemented, 1971 to present.
- Note the Key. Slide B's key indicates a diversity of wind (purple), solar (yellow), biomass (green), and geothermal (brown) projects, all ranging in size from <1 MegaWatt generation to +150 MegaWatts generation. (One megawatt will power roughly 1,000 homes for a year.)