Subject
nuclear energy
energy policy
5
coal
3
energy
3
renewable energy
3
energy demand
2
energy transition
2
green energy
2
Germany
1
behavior
1
carbon dioxide
1
carbon dioxide cycle
1
climatic change
1
coupling
1
electricity
1
energy conservation
1
energy consumption
1
energy planning
1
energy resource
1
energy system
1
environmental ethics
1
ethical aspect
1
future aspect
1
geography
1
greenhouse gas
1
historical aspect
1
international organization
1
market
1
military use
1
natural gas
1
petroleum
1
petroleum substitution
1
policy
1
politics
1
resource
1
solar energy
1
spatial analysis
1
wind
1
wood
1