Classification of energy technologies
Classification structure
| Code | Title |
|---|---|
| 1Fossil fuels | Fossil fuels |
| 2Renewable energy resources | Renewable energy resources |
| 3Nuclear fission and fusion | Nuclear fission and fusion |
| 4Electric power | Electric power |
| 5Hydrogen and fuel cells | Hydrogen and fuel cells |
| 6Energy efficiency | Energy efficiency |
| 7Other energy related research and development | Other energy related research and development |
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