GHG Greenhouse gas: CO2, CH4, N2O, and fluorinated-gases (F-gases) H 2 Hydrogen IEA The International Energy Agency LULUCF Land Use, Land-Use Change and Forestry NCES Nordic Clean Energy Scenarios PtX Power-to-X RD&D Research, Development and Demonstration RE/RES/VRES Renewable Energy/Renewable Energy Sources VRES Variable renewable energy sources such as wind and solar