The carbon dioxide emissions from 1 kilowatt-hour of electricity vary significantly depending on the energy source and regional grid mix, typically ranging from 200 to 1,000 grams of CO2 per kWh. Coal-fired power plants produce roughly 820–1,050 grams of CO2 per kWh, making them the most carbon-intensive source. Natural gas plants emit approximately 410–520 grams per kWh. Nuclear power and renewables like wind and solar produce minimal direct emissions during operation—typically 10–50 grams per kWh when including manufacturing and installation impacts. The actual emissions for any household or business depend on their regional electricity grid composition. Grids with higher renewable and nuclear percentages produce significantly lower emissions per kWh. For example, a region powered primarily by hydroelectric and wind will emit far less CO2 per kWh than one relying heavily on coal. Most utilities and environmental organizations publish their grid's average emission factor, allowing consumers to estimate their personal electricity-related carbon footprint. This metric is crucial for understanding the environmental impact of electricity consumption and comparing the climate benefits of different energy sources.