| Similarity | Rank | |
|---|---|---|
| Geothermal | 0.880 | 51004 |
| cogeneration | 0.811 | 76666 |
| gas-fired | 0.804 | 70372 |
| hydropower | 0.797 | 38989 |
| hydroelectric | 0.791 | 35239 |
| gasification | 0.785 | 64900 |
| renewable | 0.779 | 6153 |
| solar | 0.777 | 2460 |
| hydro | 0.776 | 27371 |
| hydro-electric | 0.771 | 98559 |
| hydrothermal | 0.752 | 75642 |
| photovoltaic | 0.751 | 22415 |
| biomass | 0.745 | 16091 |
| photovoltaics | 0.740 | 66103 |
| desalination | 0.739 | 51084 |
| turbines | 0.737 | 14713 |
| coal-fired | 0.735 | 36383 |
| heating | 0.734 | 4216 |
| biogas | 0.733 | 44510 |
| tankless | 0.730 | 50304 |
| turbine | 0.729 | 13697 |
| cooling | 0.728 | 5940 |
| renewables | 0.727 | 27442 |
| thermal | 0.724 | 8079 |
| methane | 0.718 | 19799 |