- AGRICULTURE 332.97
- AIR POLLUTION 342.08
- BIOFUEL 341.22
- BIOMASS 341.32
- BIOTECHNOLOGY 152.73
- CHEMICAL ENERGY 341.92
- COAL 341.24
- COAL SECTOR 421.21
- ECOLOGY 342.75
- ECONOMIC POLICY 332.65
- ECONOMY OF SCARCITY 333.48
- ELECTRIC MOTOR 152.26
- ELECTRIC POWER STATION 341.95
- ELECTRICAL ENGINEERING 152.36
- ELECTRICITY 341.65
- ELECTRICITY AND ELECTRONIC SECTOR 423.55
- ENERGY 341.55
- ENERGY CONSUMPTION 341.68
- ENERGY CRISIS 341.58
- ENERGY POLICY 341.57
- ENERGY PRODUCTION AND DISTRIBUTION SECTOR 421.52
- ENERGY SAVING 341.79
- ENERGY SOURCE 341.63
- ENERGY TRANSFORMATION 341.87
- ENERGY TRANSITION 341.52
- ENERGY TRANSPORT 341.88
- ENERGY USE 341.37
- ENGINE AND TURBINE 152.24
- ENVIRONMENTAL PROTECTION 342.55
- FOSSIL ENERGY 341.53
- FUEL 341.33
- GAS 341.13
- GEOTHERMAL ENERGY 341.70
- HYDROCARBON 341.23
- INDUSTRIAL GAS 341.02
- INTERNATIONAL RELATIONS 311.72
- LASER 341.91
- LOGISTICS 141.43
- NATURAL GAS 341.03
- NUCLEAR ENERGY 341.84
- OIL 341.14
- PETRODOLLAR 335.80
- PIPELINE TRANSPORT 143.85
- RAW MATERIAL 142.75
- REFINING 341.18
- RENEWABLE ENERGY 341.62
- SHIP 143.25
- SOLAR ENERGY 341.81
- TRANSPORTATION 143.55
- WATER 342.68
- WATER POWER 341.41
- WIND POWER 341.50
- 14 PETRODOLLAR 335.80
- 23 PIPELINE TRANSPORT 143.85
- 24 COAL SECTOR 421.21
- 32 BIOTECHNOLOGY 152.73
- 32 AGRICULTURE 332.97
- 33 AIR POLLUTION 342.08
- 41 WATER 342.68
- 52 ECOLOGY 342.75
- 55 LOGISTICS 141.43
- 55 ENERGY PRODUCTION AND DISTRIBUTION SECTOR 421.52
- 55 ENVIRONMENTAL PROTECTION 342.55
- 55 RAW MATERIAL 142.75
- 57 ECONOMIC POLICY 332.65
- 58 ECONOMY OF SCARCITY 333.48
- 58 INTERNATIONAL RELATIONS 311.72
- 65 ELECTRICITY AND ELECTRONIC SECTOR 423.55
- 65 ELECTRICAL ENGINEERING 152.36
- 87 ENGINE AND TURBINE 152.24
- 87 ELECTRIC MOTOR 152.26
- 88 SHIP 143.25
- 88 TRANSPORTATION 143.55
- - Agrofuel 341.22
- - Carbon tax 341.57
- - Electric power 341.65
- - Energy economy 341.55
- - Energy market 341.55
- - Hydro electric power plant 341.95
- - Light 341.63
- - Mine 341.37
- - Nuclear power station 341.95
- - Offshore 341.37
- - Oil research 341.14
- - Onshore 341.37
- - Thermal power station 341.95
- - Uranium 341.84
- - Wind 341.63