Examples of Sources
Primary energy sources should not be confused with the energy systems (or conversion processes) through which they are converted into energy carriers.
| Primary energy sources | converted into |
Energy carriers (main) | within the | Energy systems | ||
| Non-renewable sources |
Fossil fuels |
Oil (or crude oil) | Fuel oil | Oil refinery | ||
| Coal or natural gas | Enthalpy, mechanical work or electricity | Fossil fuel power station | ||||
| Mineral fuels |
Natural uranium | Electricity | Nuclear power plant (thermonuclear fission) | |||
| Renewable sources |
Solar energy | Electricity | Photovoltaic power plant (see also Solar power) | |||
| Enthalpy | Solar power tower, solar furnace (see also Solar thermal energy) | |||||
| Wind energy | Mechanical work or electricity | Wind farm (see also Wind power) | ||||
| Falling and flowing water, tidal energy | Mechanical work or electricity | Hydropower plant, wave farm, tidal power station | ||||
| Biomass sources | Enthalpy or electricity | Biomass power station | ||||
| Geothermal energy | Enthalpy or electricity | Geothermal power station | ||||
Read more about this topic: Primary Energy
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—Barbara Ehrenreich (20th century)