Carbon intensity is a measure of how clean your electricity is, in your state or country. It refers to how many grams of carbon dioxide are released to produce a kilowatt hour (kWh) of electricity.
Electricity that’s generated using fossil fuels is more carbon intensive, as the process by which it’s generated creates CO₂ emissions.
Renewable energy sources, such as wind, hydro or solar power, produce next to no CO₂ emissions, so their carbon intensity value is much lower and often zero.