Guides

• How the County Numbers Are Made — Where the wind and price data come from, the turbine the model assumes, and where a county figure is weakest.
• Why Tower Height Decides Whether a Turbine Pays — The same turbine at roof height, 30 m and 50 m, worked through for a typical county, and how many counties a taller tower would turn around.
• What Electricity Price Makes a Home Turbine Pay? — The power price each county would need for a turbine to pay back, against what states actually charge.
• Wind or Solar for a Home: Which Makes More Power? — Kilowatt for kilowatt, how often a home wind turbine out-produces solar panels in US counties, from the same NASA record.
• The Federal Tax Credit for Home Wind Has Ended — The 30% federal credit for home turbines does not cover spending after 2025. What it used to change, county by county.