| Category | Subcategory | Includes |
| Non-renewable resources | Fossil | Hard coal, lignite, crude oil, natural gas, coal mining off gas, peat |
| Nuclear | Uranium | |
| Primary forest | Wood and biomass from primary forests | |
| Renewable resources | Biomass | Wood, food products, biomass from agriculture, e.g., straw |
| Wind | Wind energy | |
| Solar | Solar energy (used for heats & electricity) | |
| Geothermal | Geothermal energy (shallow 100 - 300 m) | |
| Water | Run-of-river hydro power, reservoir hydro power |