| Similarity | Rank | |
|---|---|---|
| renewable | 0.782 | 6153 |
| bioenergy | 0.781 | 65798 |
| cleantech | 0.762 | 63075 |
| biofuels | 0.745 | 26111 |
| renewables | 0.734 | 27442 |
| energy-efficiency | 0.726 | 70696 |
| GHG | 0.725 | 30079 |
| water-related | 0.718 | 83580 |
| cogeneration | 0.715 | 76666 |
| photovoltaics | 0.705 | 66103 |
| energy-intensive | 0.702 | 95480 |
| biofuel | 0.702 | 33305 |
| environmental | 0.698 | 1795 |
| fossil-fuel | 0.697 | 91442 |
| emissions | 0.695 | 4569 |
| private-sector | 0.693 | 41114 |
| GHGs | 0.688 | 91201 |
| Renewable | 0.683 | 19768 |
| NREL | 0.680 | 96585 |
| energy | 0.679 | 453 |
| low-carbon | 0.678 | 41607 |
| petrochemical | 0.677 | 40327 |
| feedstocks | 0.671 | 76964 |
| biotechnology | 0.668 | 20307 |
| hydropower | 0.667 | 38989 |