Study: it takes 10 units of alternative electricity sources to offset 1 unit of fossil fuel-generated power

WUWT
"Based on a four-model study of electricity used in some 130 countries in the past 50 years, York found that it took more that 10 units of electricity produced from non-fossil sources — nuclear, hydropower, geothermal, wind, biomass and solar — to displace a single unit of fossil fuel-generated electricity."