The Electricity Maps API provides actionable data quantifying how carbon-intensive electricity is on an hourly basis across 50+ countries. The data can be accessed historically, in real-time, or as a forecast for the next 24 hours. This is a commercial API, requiring a monthly subscription for access.
The CO2signal API gives you access to where the electricity in a specific region comes from, how it was produced and how much carbon was emitted to produce it. The API is free for non-commercial use.
The Zero Tool is used to compare an existing or planned building’s energy use intensity (EUI) with similar building types, understand how a building achieved its EUI (via energy efficiency, on-site renewable energy, and/or green power purchases), and set EUI targets.