The four electricity solutions in the Utrecht assessment share the same basis: renewable energy replaces the current gas-fired plants, with each TWh equal to 102,289,199.5 m³ of gas at 1.884 kg CO₂-eq of emissions per m³.
This conversion rule (CO2emissiefactoren.nl, 2021) makes the scenarios for rooftop solar, solar parks, onshore wind and green gas mutually comparable and traceable to a single yardstick.