- absorber 142, 175
- absorption heat pump 249
- adsorption heat pump 249
- air collector 146
- air receiver 175
- alkaline electrolysis 289
- annual continuous curve 227
- ‘anyway’ energy 17–20
- Archimedes 170
- arctic ice coverage 30
- atomic bomb
- BAFA 163, 279
- barrel
- battery 94, 132, 197
- battery capacity 126
- Beaufort wind scale 193
- Betz's coefficient 194
- bio oil 271–272
- biodiesel 272
- bioethanol 273
- biofuels 271, 282
- biogas 275
- biogas plant 275
- boiling water 55
- biomass 90, 259
- ecology 280
- economics 279–280
- formation 259
- fuels 270, 282
- heating plants 269
- heating systems 263
- markets 282–284
- potential 261
- power plants 269
- utilization in Germany 282
- boring rig 236
- BtL fuels 274–275
- bulb-type turbine 218
- bulk stacked cubic metre 264, 265
- bypass diodes 114
- C4 plants 261
- calculation
- annual wind power yield 211
- battery capacity 126, 130
- collector efficiency 143–145
- collector size 260
- ground heat collector size 251
- heat pump COP 247
- hydropower plant output 227–228
- log boiler output 266–268
- power of the wind 191
- PV capacity 126
- PV capacity for isolated network systems 126
- PV system yield 129
- solar power plant yield 181
- tank size 160
- wood pellet store 68, 245
- calorific value of wood 264
- carbon dioxide 34, 38, 82, 288
- balance 79
- concentration 34, 35
- separation 82
- sequestration 81
- carbon dioxide emissions
- countries of the world 35
- food 69, 70
- fuel consumption 65
- Germany 49
- heating system 67
- hydrogen production 297
- Jänschwalde power plant 78
- Neurath power plant 79
- paper consumption 70
- transport 65
- carbon dioxide-free power plants 82
- cavern storage facility 292
- CCGT power plants 84, 174
- CFC 39, 40, 255
- chamber system 225
- Chernobyl 10, 12
- chiller 156
- CHP 84
- CHP plants 84, 85, 271, 290
- Clean Development Mechanism 72
- climate change 27, 42
- climate protection 45, 51
- coal equivalent 321
- collector 142, 145, 171
- collector efficiency 143
- collector size 260
- combined heat and power 84
- Combined Power Plant 98
- compression heat pump 248–249
- concave mirror 171
- concentrating PV 182
- concentration of solar radiation 170
- concentrator 169
- concentrator cells 110, 179
- controlled ventilation 63, 302
- conventional deposits 20
- coolant 249
- COP 247
- deep geothermal see geothermal energy
- deep geothermal drilling 237
- deep temperatures 235
- depth gradient 235
- design
- biomass heating plant 263
- geothermal plants 244
- heat pump 251
- hydropower plants 227
- log boiler 266
- log boiler 266–268
- PV 77, 79
- PV installation 323
- solar domestic water heating 158–159
- solar heating support 141, 162
- solar power plants 133, 169
- solar thermal systems 64, 93, 158
- wind power 211
- wood pellet store 68, 245
- direct-normal irradiance 181
- Dish-Stirling power plant 177–178
- distribution network 100
- DNI 181
- domestic electricity prices 56
- domestic water heating 142, 158, 266
- earth's core 233
- ecology
- biomass 280
- geothermal energy 243
- heat pump 249
- hydrogen production 297
- hydropower 228
- PV 135
- solar power plants 183–184
- solar thermal systems 163
- wind power 211
- economics
- biomass 279–280
- geothermal plants 244
- heat pump 253
- hydrogen 295
- hydropower 227
- PV 135
- solar power plants 183
- solar thermal systems 163
- wind power 211
- efficiency
- biomass growth 260
- biomass power plant 271
- collector 143–145
- fireplaces and woodburning stoves 266
- fuel cell 285
- log boiler 266–268
- methanation 289–290
- open fireplace 266, 281
- ORC power plant 238
- PV 110
- steam turbine process 175, 176
- electric car 66, 94
- electric cooker 54, 55
- electricity consumption 57
- electricity export 104
- electricity generation 103
- electricity generation costs
- electricity import 187
- electricity prices 102
- electricity supply system 83, 94
- electrolysis 289
- emissions trading 73
- energy , 15, 54
- energy companies 41, 66
- energy end use 56
- energy policy 75, 103
- energy reserves 21
- energy saving 60, 67
- energy transition 75, 77
- energy-saving timer 59, 60
- EnEV 278
- fast breeder reactor 11
- final energy 16, 83
- fireplace, woodburning stove 266
- fish ladder 229
- Flatcon technology 179
- flat-plate collector 145–146
- float system 225
- flow profile, wind turbine 195
- fossil energy sources
- fossil-based electricity generation 104
- fracking 20, 21
- Francis turbine 219
- frequency distribution 207
- Fresnel collector 171
- fuel cell 295
- fuel cell stacks 295
- fuel yield per hectare 283
- Fukushima , 12
- gas cooker 54, 55
- gas storage facility 293
- geothermal depth gradient 235
- geothermal energy 17, 238
- ecology 242–243
- economics 242
- HDR-power plant 240–241
- heat pump 245
- heating plant 237
- markets 243
- power plant 237
- German Renewable Energy Act 73–74
- global circulation 191
- Goldisthal 224
- gravity system 149–152
- green electricity 55
- greenhouse effect 33
- greenhouse gases 38
- greenhouse potential
- coolant 249
- greenhouse gases 38
- hydropower 215
- ecology 254
- economics 253–254
- markets 246
- ocean current power plants 226
- pumped-storage hydropower plants 222–224
- run-of-river hydropower plants 220–222
- storage power plants 222
- tidal power plants 224–225
- turbines 217
- wave power plants 225
- ice age 28
- ice coverage 29, 30
- insulation 62
- interglacial periods 27
- IPCC 41
- Joint Implementation 72
- Kalina process 239
- Kalkar 11
- Kaplan turbine 218
- KfW 40 house 61, 301
- KfW 60 house 61
- Kværner technique 288
- Kyoto Protocol 49, 50
- LH2 291
- lift principle 195
- lignite-fired power plant Jänschwalde 79
- line concentrator 171
- lines 101
- liquid hydrogen 287, 291
- lithosphere 234
- log boiler 266–268, 276
- low-energy house 61
- low-energy lamps 76, 72
- Manhattan Project , 10
- markets
- biomass 282–284
- geothermal energy 243
- heat pump 256
- hydrogen 346
- hydropower 228
- PV 136
- solar power plants 185
- solar thermal systems 164
- wind power 211
- maximum power point 111
- methanation 289–290
- methane 38, 290
- module price development 138
- molten carbonate fuel cell 295
- monocrystalline silicon 112
- motorway 94
- MPP 111
- natural disasters 31
- natural gas , 54
- nitrous oxide 38, 69
- non-conventional deposits 20
- nuclear energy , , 26, 83
- nuclear fusion 12
- nuclear phase-out 75, 77
- nuclear power –12, 83–84
- nuclear power plant –12
- ocean current power plants 226
- offshore wind power 206
- oil , 21, 25, 279
- oil crisis , 25
- oil equivalent 321
- oil parity 134
- oil prices 25
- oil prices , , 254, 259
- oil reserves 23, 24
- oil sands 20
- OPEC , , 23, 25
- open fireplace 266, 281
- opencast lignite mining 79
- open-circuit voltage 57, 110
- ORC power plant 238
- oxidation, partial 288
- oxygenic photosynthesis 259, 260
- oxyhydrogen reaction 285
- ozone 39
- ozone hole 39, 41
- ozone layer 39
- parabolic trough power plant 171
- partial oxidation 288, 297
- passive house 61
- Pelton turbine 219, 220
- PEM-fuel cell 295
- per-capita primary energy demand 86
- performance ratio 125, 126
- petrothermal geothermal energy 240
- photosynthesis 34, 259
- photovoltaics 107
- concentrator cells 110, 179
- ecology 135
- economics 131
- efficiency 109
- energy transition 104
- function 107–108
- grid connection 116
- grid-coupled battery system 122
- grid-coupled systems 115
- heating support 141, 162
- markets 136
- module 114
- module price development 138
- optimum orientation 119
- self-consumption level 121, 130
- self-sufficiency level 121, 122
- stand-alone systems 115
- thin-film module 115
- plug-in hybrid vehicles 309
- Plus-Energy housing development 303
- Plus-Energy solar house 302
- point concentrator 171
- polycrystalline solar cells 112
- pore storage facilities 292
- power
- power coefficient 194
- power plant
- power supply 66, 101
- power-to-gas technology 285, 287
- PR 125
- primary energy 15
- primary energy demand
- biomass share 283
- energy sources
- global development 12, 13
- per head 15
- pumped-storage hydropower plants 222–224
- PV see photovoltaics
- PVC 145
- rail 64
- rapeseed oil methyl ester 272
- receiver 177
- reduction targets 71
- renewable available energy 86–87
- renewable electricity import 187
- renewable electricity supply system 94, 97, 100
- Renewable Energy Sources Act 73, 133
- biomass power plants 281
- geothermal power plants 238, 241
- hydropower 228
- renewable gas 206, 286
- renewable heat supply 93, 97
- renewables installations ownership 105
- reserve capacity 20
- resistance principle 195
- resources 20
- rise in sea levels 29, 42
- RME 272
- rotor blade 208
- round wood 263
- run-of-river hydropower plants 220–222
- sailing 198, 313
- sale of indulgences 72
- seasonal performance factor 246–247, 254
- sector coupling 89–90
- SEGS power plants 174
- selective absorber 146
- selective coating 146
- self-consumption 121, 122
- self-sufficiency 121, 122
- semiconductor 08
- short-circuit current 110
- silicon 107, 112
- small wind turbines 201
- solar absorber 142
- solar activity 27, 34
- solar car 309
- solar car 309, 310
- solar chemistry 179–180
- solar chimney power plant 178
- solar collector 142, 145
- solar cooker 157
- solar cooling 156
- solar direct vaporization 181
- solar district heating 154
- solar domestic water heating 158–159
- solar electricity import 187
- solar energy 96
- solar ferry 313–314
- solar fraction 154, 162
- solar furnace 170, 179
- solar gas 286
- solar heating support 141
- solar kitchen 316–317
- solar panel
- solar plane 315
- solar power plants 169
- concentrating PV 136
- Dish-Stirling power plant 177–178
- ecology 135
- economics 131
- markets 136
- parabolic trough power plant 174
- planning 124
- PV 136–37
- solar chimney power plants 178
- solar tower plant 175
- solar pulses 315
- solar radiation energy
- solar ship 306
- solar swimming pool heating 157
- solar system orientation 119
- solar thermal systems 141, 158
- configuration 141
- domestic water heating 158–159
- ecology 164–165
- economics 163
- heating support 141
- markets 165
- planning 158
- power plants 169
- solar tower plant 175
- solar tower plant 176–177, 182
- solar-heated multi-storey house 305
- solid cubic metre 264, 265
- solid oxide fuel cell 294
- split logs 277
- stacked cubic metre 264, 265
- stand-alone wind system 198
- standard test conditions 111
- standby losses 57
- STC 111
- steam reforming 288, 296
- Stirling engine 177
- storage
- storage power plants 222
- stratosphere 39
- swimming pool absorber 145
- swimming pool heating 157
- tank size 160
- tectonic plates 235
- temperature change 27, 29
- thermal radiation 146
- thermo-syphon system 150
- thin-film PV module 115
- three-litre house 61, 162
- tidal power plants 224–225
- tilt gains 127, 129
- timber frame construction 301
- towing kite 313, 314
- town gas 286
- trade wind 191
- transmission grid 100, 101
- transport 291
- transport 64
- transport sector 271
- trough power plant 171
- turbine
- turnover tax 135
- types of solar radiation 181
- underground storage 82, 99, 291
- uranium deposits 24
- useful energy 16, 53
- U-value 61, 62
- vacuum flat-plate collector 148
- vacuum glazing 62
- vacuum insulation materials 62, 306
- vacuum tube collector 147–149
- VAT 134
- ventilation 63
- volumetric receiver 175
- wafer 112
- water cycle of the Earth 216, 217
- water turbines 217
- wave power plants 225
- wind 191
- wind charger 196–197
- wind power 189, 192
- configuration 211
- ecology 210
- economics 208
- energy transition 104
- grid-coupled systems 305
- lift principle 195
- markets 212–213
- offshore 206
- planning 211
- system configuration 197–198
- wind charger 196–197
- world population 86
- World Solar Challenge 310, 311
- zero heating costs house 305–306
- zero-emission factory 306–307
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