| Forest Biomass Utilization and Management | Lifetime | 3 | CA 2 | 99.65 |
| Bioenergy crop production and management | Lifetime | 35 | CA 3 | 99.03 |
| Thermochemical Biomass Conversion Processes | Lifetime | 71 | CA 5 | 99.41 |
| Biofuel production and bioconversion | Lifetime | 144 | CA 6 | 99.34 |
| Hybrid Renewable Energy Systems | Lifetime | 111 | CA 7 | 98.58 |
| Environmental Impact and Sustainability | Lifetime | 121 | CA 3 | 99.03 |
| Energy and Environment Impacts | Lifetime | 156 | CA 7 | 98.45 |
| Global Energy and Sustainability Research | Lifetime | 100 | CA 4 | 97.92 |
| Integrated Energy Systems Optimization | Lifetime | 167 | CA 5 | 98.09 |
| Water-Energy-Food Nexus Studies | Lifetime | 241 | CA 8 | 96.30 |
| Mining and Gasification Technologies | Lifetime | 245 | CA 5 | 95.72 |
| Environmental and Industrial Safety | Lifetime | 126 | CA 1 | 93.99 |
| Biodiesel Production and Applications | Lifetime | 852 | CA 15 | 95.19 |
| Coal Combustion and Slurry Processing | Lifetime | 402 | CA 13 | 92.98 |
| Municipal Solid Waste Management | Lifetime | 437 | CA 15 | 93.41 |
| Energy, Environment, and Transportation Policies | Lifetime | 922 | CA 17 | 93.51 |
| Oil, Gas, and Environmental Issues | Lifetime | 106 | CA 6 | 89.12 |
| Subcritical and Supercritical Water Processes | Lifetime | 414 | CA 25 | 88.72 |
| Hybrid Renewable Energy Systems | 2021-2025 | 341 | CA 14 | 93.82 |
| Thermochemical Biomass Conversion Processes | 2021-2025 | 449 | CA 11 | 93.89 |
| Environmental Impact and Sustainability | 2021-2025 | 448 | CA 3 | 92.38 |
| Municipal Solid Waste Management | 2021-2025 | 234 | CA 8 | 89.71 |
| Energy and Environment Impacts | 2021-2025 | 633 | CA 10 | 89.92 |
| Integrated Energy Systems Optimization | 2021-2025 | 621 | CA 8 | 88.39 |
| Petroleum Processing and Analysis | 2021-2025 | 586 | CA 36 | 83.36 |
| Global Energy and Sustainability Research | 2021-2025 | 270 | CA 12 | 77.94 |
| Forest Biomass Utilization and Management | 2021-2025 | 278 | CA 17 | 74.72 |
| Water-Energy-Food Nexus Studies | 2021-2025 | 763 | CA 16 | 74.01 |
| Coal Combustion and Slurry Processing | 2021-2025 | 416 | CA 7 | 71.83 |
| Energy Efficiency and Management | 2021-2025 | 932 | CA 35 | 50.21 |