It shows that the carbon footprint of solar, wind and nuclear power are many times lower than coal or gas with carbon capture and storage (CCS). This remains true after accounting for emissions during manufacture, construction and fuel supply.

In 2026, nuclear energy and wind power are tied for the lowest lifecycle greenhouse gas emissions. While solar and hydro are also low-carbon, nuclear power has a median emission rate of about 12 grams of CO2​ equivalent per kilowatt-hour (gCO2​e/kWh), which accounts for everything from mining uranium to decommissioning. Wind energy follows closely, with onshore wind averaging around 11–12 gCO2​e/kWh. These figures are significantly lower than fossil fuels; for comparison, coal emits about 820 gCO2​e/kWh and natural gas around 490 gCO2​e/kWh. The International Energy Agency (IEA) highlights that by 2026, low-emission sources will account for nearly half of global electricity generation. Choosing between nuclear and wind often depends on local geography and policy, but both represent the "gold standard" for minimizing a carbon footprint. For a homeowner, installing rooftop solar is a massive step, but at a utility scale, the combination of nuclear for "baseload" and wind/solar for variable power is the most effective strategy for reaching net-zero goals.