| Similarity | Rank | |
|---|---|---|
| biomass | 0.747 | 8352 |
| anaerobic_digestion | 0.747 | 68210 |
| district_heating | 0.725 | 89833 |
| organic_waste | 0.720 | 69060 |
| bioenergy | 0.714 | 43864 |
| biodiesel | 0.708 | 34972 |
| renewable_energy_source | 0.704 | 24016 |
| renewable_fuel | 0.698 | 88540 |
| biofuel | 0.697 | 11346 |
| digester | 0.695 | 79636 |
| feedstock | 0.692 | 44952 |
| renewable_energy | 0.675 | 4106 |
| electricity_production | 0.664 | 79564 |
| renewable_source | 0.663 | 75160 |
| energy_generation | 0.656 | 60953 |
| geothermal | 0.652 | 29209 |
| geothermal_energy | 0.650 | 53114 |
| alternative_fuel | 0.648 | 38448 |
| solar_energy | 0.648 | 10842 |
| natural_gas | 0.646 | 5419 |
| solar_thermal | 0.645 | 84209 |
| liquid_fuel | 0.644 | 86707 |
| electricity_generation | 0.644 | 42478 |
| fuel_cell | 0.643 | 19021 |
| biochar | 0.640 | 50196 |