Subject
energy economy
20
energy statistics
12
system analysis
6
energy system
5
climatic effect
4
climatic impact
4
agriculture
3
climate modification
3
safeguard
3
sustainable development
3
climatic change
2
coal
2
ecology
2
energy consumption
2
energy conversion
2
energy demand
2
energy environment balance
2
energy policy
2
environmental policy
2
environmental protection
2
greenhouse gas
2
heat pump
2
hydrogen energy
2
hydrogen storage
2
hydrogen transport
2
hydrological cycle
2
modeling
2
natural gas
2
nuclear power
2
petroleum
2
risk analysis
2
solar collector
2
water resource management
2
water supply
2
C plus-plus (programming language)
1
Visual BASIC (programming language)
1
agricultural use
1
atmosphere
1
biomass energy production
1
biosphere
1
building
1
carbon monoxide
1
climate model
1
coal conversion plant
1
consumption statistics
1
containment
1
district heating
1
downstream processing
1
drinking water
1
electric power generation
1
more ...