| Subject | English | German |
| el. | a source of electrical power in which the energy liberated in radioactive decay is collected as heat and converted,usually directly by thermocouple action,into electricity | thermoelektrischer Radioisotopengenerator |
| energ.ind. | alternative energy source | alternative Energiequellen |
| environ., energ.ind. | alternative, environmentally friendly energy source | alternative umweltfreundliche Energiequelle |
| gen. | balance sheet of each energy source | einzelne Energieträgerbilanzen |
| med.appl. | biogalvanic energy source | biogalvanische Energiequelle |
| gen. | breakdown by source of energy | Aufteilung nach Energieträgern |
| nat.res. | conventional energy source | konventionelle Energiequelle |
| energ.ind. | domestic energy source | Haushaltsenergiequelle |
| commun., el. | dynamic source of energy | dynamische Energiequelle |
| construct. | electricity from renewable energy source | Strom aus erneuerbarer Energiequelle |
| transp., el. | electrochemical energy source | elektrochemische Energiequelle |
| radiat. | energy reference source | Normalenergiequelle |
| gen. | energy source | Energiequelle |
| environ. | energy source Potential supplies of energy including fossil and nuclear fuels as well as solar, water, wind, tidal and geothermal power | Energiequelle |
| gen. | energy source | Energieträger |
| energ.ind. | energy source material | Energieträger |
| environ. | energy source material Sources from which energy can be obtained to provide heat, light, and power. Energy resources, including fossil and nuclear fuels as well as solar, water, tidal and geothermal energy, may be captured or recovered and converted into other energy forms for a variety of household, commercial, transportation, and industrial applications | Energieträger |
| energ.ind. | energy source material | Energiequelle |
| coal. | gamma source of varying energy | Gammaquelle unterschiedlicher Energie |
| nucl.phys. | high energy neutron source | hochenergetische Neutronenquelle |
| gen. | high energy source of ignition | energiereiche Zündquelle |
| IT, el. | internal energy source | interne Energiequelle |
| coal. | low energy radiation source | Quelle niedrig-energetischer Strahlung |
| environ., energ.ind. | low-carbon energy source | Energiequelle mit niedrigem CO2-Ausstoss |
| environ., energ.ind. | low-carbon energy source | Energiequelle mit geringem CO2-Ausstoss |
| environ., el. | low-polluting source of energy | emissionsarmer Energieträger |
| environ. | non-polluting energy source Energy that is ecologically safe and renewable. The most widely used source is hydroelectric power, which currently supplies some 6.6% of the world's energy needs. Other non-polluting sources are solar energy, tidal energy, wave energy and wind energy. Most non-polluting energy sources require a high capital investment but have low running costs | Umweltfreundliche Energiequelle |
| energ.ind. | non-renewable energy source | nicht erneuerbare Energiequelle |
| energ.ind. | non-renewable primary source of energy | nichterneuerbare Primärenergie |
| nat.sc. | photon energy source | Fotonenemissionsgerät Photonenemissionsgerät |
| energ.ind. | primary energy source | Primärenergiequelle |
| anal.chem. | radiant energy source | Strahlungsquelle |
| energ.ind. | rechargeable reserve energy source | aufladbare Reserve-Energiequelle |
| environ. | renewable energy source Energy sources that do not rely on fuels of which there are only finite stocks. The most widely used renewable source is hydroelectric power; other renewable sources are biomass energy, solar energy, tidal energy, wave energy, and wind energy; biomass energy does not avoid the danger of the greenhouse effect | Erneuerbare Energiequelle |
| nat.sc. | renewable energy source contribution | Anteil erneuerbarer Energiequellen |
| stat., el. | source energy | Quellenenergie |
| energ.ind. | source of energy | Energiequelle |
| gen. | source of energy | Energieträger |
| environ. | use of waste as energy source | Energetische Abfallverwertung |