低碳一次能源有三种选择：可再生能源，包括风能、太阳能、地热、水电和生物能；核能；以及碳捕捉和碳储存，即用化石燃料生产能源，但限制二氧化碳发生量，并将碳安全地储存于地下。
Low-carbon primary energy means three options: renewable energy, including wind, solar, geothermal, hydropower, and biomass; nuclear energy; and carbon capture and sequestration, which means using fossil fuels to create energy, but trapping the CO2 emissions that result and storing the carbon safely underground.