SolutionCost (Billion USD/yr)Benefit (Billion USD/yr)Efficiency (Benefit / Cost)Net Benefit (Benefit - Cost)CO₂ Reduction megaTon/yrHabitat Preservation (km²)
5% Methanol in Gasoline - U.S.$11.2$13.21.22.011.4
Accelerate Development and Deployment of Geothermal - World$23.6$28.31.24.716
Accelerate Investment into Solar Energy - World$1,105.3$1,591.21.4485.98,770
Accelerate Investment into Wind Energy - World$893.86$1,492.381.7598.58,225
Advanced Reactor Technology R&D – U.S.$0.46$1.322.90.9
Advanced Solar Cell Technology R&D – U.S.$0.83$12.515.111.7
Building Envelope Modeling Software Standardization - U.S.$0.002$1500.01.011.9
Carbon Pricing$93.3$137.51.544.21,600
Clean Energy Standard - U.S.$36.7$58.91.622.21,000
Coal Phase Out - World$1,700$5,1003.03400.017,000
Concentrated Solar Power Plants R&D – U.S.$0.83$6.68.05.8
Concentrating Solar PV R&D – U.S.$0.83$10.813.010.0
Construct a High-Voltage-Direct-Current Grid - U.S.$220$6713.0451.0480
Dam Decommissioning Fund - U.S.$0.11$0.232.10.1
Dimethyl Ether for trucks - U.S.$0.3119$0.541.70.21.51
Electrofuels for Aviation$381$5521.4171.02,253
Enhanced Geothermal R&D – U.S.$0.83$4.85.84.0
Europe Should Maintain Nuclear Fleet$20$603.040.0172
Fund Wave Energy Research - U.S.$0.008$0.0192.40.02.9
Geothermal Categorical Exclusion - U.S.$3.4926$19.58715.616.196.279
Greater Up-front Incentives for Electric Vehicles - U.S.$373$4351.262.0130
Green Steel$953.9676$959.74361.05.82,179.625
Grid Battery Deployment for Load Balancing$41.7$84.12.042.491
Heat Pump Mandate - U.S.$0.0031$0.0082.60.00.044
Heat Recovery Loan Program - U.S$1.1$21.80.914.9
Higher CAFE Standards - U.S.$12.58$14.141.11.60.002
Inert Anodes$9.6268$29.03423.019.4169.394
Lighting Technology R&D$0.625$3149.630.479
Low-carbon Cement Standards - World$2.6$7.793.05.248
Low-Carbon Methanol Plants$3.6071$4.5451.30.932.143
Luminescent Solar Concentrator Technology R&D – U.S.$0.83$1.762.10.9
Maintenance of Peace - World$6.4$25.64.019.2
Methane Capture from Waste - World$11.2205$55.83235.044.6394.857
Methane Control on Coal Mines$3.3$319.427.7620
Methane Control on Oil Wells$0.633$4977.448.4980
Natural Gas - Tighter Regulation on Leakage$0.285$40140.439.7800
Natural Gas Plants with Carbon Capture - World$22.1$22.71.00.6100
Oil Spill Liability Trust Fund - U.S.$0.0383$0.513.10.5
Onshore Power for Ships at Port - World$1.02$2.542.51.511.7
Pedestrian Skybridge - Manhattan$13$221.79.0
Platooning Bus Rapid Transit$0.3712$7.051719.06.70.26
Production Tax Credit$4$4.73331.20.795
R&D Into Solar Heat- World$69.9$123.51.853.61,180
Renewable Microgrids - US Military$0.031$0.0411.30.00.057
Replace Gasoline with Methanol - Fleet$0.0006$0.00223.80.0
Replace Peaker Plants with Storage - U.S.$17.22$271.69.863.3
Retrofit Wind Turbines with Winglets$1.4951$3.87052.62.41.12
Small Modular Reactor R&D – U.S.$0.46$613.05.5
Solar Investment Tax Credit - U.S.$0.64$0.8621.30.2
Upgrade Power Grid - U.S.$40$1122.872.0
Wind Turbine Drivetrain R&D - U.S.$0.0492$0.19684.00.1
Ban Lead Paint$0.005$2400.02.0
Ban Nontherapeutic Livestock Antibiotics$0.3$5.5818.65.3
Complimentary Feeding Education - LI/LMI Countries$4.513$40.1488.935.6
First Expired First Out Food Inventory Management- US$0.315$1.434.51.11.54
Hermetic Storage for Postharvest Loss - Tanzania$59.9$276.44.6216.51.44
Improved Prenatal Supplements - Low Income Countries$0.3$5.5818.65.3
Meat Tax - U.S.$0.027$26.3974.126.3135341,000km²
Modern Cooking Fuels$14.4$1006.985.6
Modular Island Desalination - Mediterranean Islands$0.004$0.0379.30.00.05
Pesticide Tax - World$0.0257$0.08883.50.1
Plant-based Info. Advocacy Campaign - U.S.$0.48$10.6522.210.288
Precision Agriculture R&D$9.94$198.820.0188.9
Reduce Restaurant Meal Sizes$0.44$9.0320.58.613
Research to Improve Agricultural Yields - Global South$1.7$6035.358.3
School Lunch Meat Removal - U.S.$0.013$7.65588.57.627.8
Standardized Food Labeling - U.S.$381$5521.4171.02,253
Supplementary Food Program - LI/LMI Countries$3.248$44.51513.741.3
ULAB Site Remediation$0.412$6.362415.46.0
Ultrafiltration Membrane Technology for Water Filtration - U.S.$7.89$17.342.29.40.25
Wastewater Treatment and Reuse$17$231.46.0
Water Desalination$10$3.50.3-6.5
Biochar for Carbon Sequestration - World$225$248.351.123.32,500
Genetic Screening for Cardiovascular Disease - US Employers$2.5$3.21.30.7
Increased Adaptation Investment - World$150$7204.8570.0
Phase Out Asbestos Usage - World$6.05$1,005166.1999.0
Plan to End TB - World$2.6$99.638.397.0
Plan to End Tuberculosis - World$2.66$99.637.496.9
Radon Testing for Low-Income Households - U.S.$1.08$16.415.215.3
Reforestation and Afforestation - World$190$1,7709.31580.07,6263,040,000km²
Reverse Osmosis Arsenic Filtration - World$2.58$2.10.8-0.5
Wildlife Corridors - U.S.$4.8$9.42.04.6
Development Set Patterns - U.S.$1,540$1,6331.193.021.242,000km²
Green Roofs in Urban Planning - US$5.56$19.083.413.5
Heat Mitigation through Trees - World$46.19$89.621.943.425.26
LED Street Lights With Full Cut-Off Shielding - World$15.5$20.81.35.327.4
Loosen Floor Area Ratio Rules for Residential - U.S.$139$2742.0135.02.67,947km²
Loosen Minimum Parking Lot Size Rules - U.S.$0.703$16.423.315.74.52,456km²
Quieter Pavement$1.3318$1.78291.30.5
Remove Parking Minimums - U.S.$0.044$0.92921.10.90.001139km²
Trucking Road Usage Charge - U.S.$13$1299.9116.0
Composting Infrastructure$97.56$220.892.3123.3361.1
Deep Borehole Disposal$0.2162$0.83243.90.617
Establish E-waste Infrastructure - US$32.26$55.381.723.170.8
Extended Producer Responsibility for Discarded Blades$1.5748$4.34952.82.810
Increase Plastic Tax - U.K.$0.1372$0.1781.30.01.8
Landfill Tax - World$7.5$62.758.455.379.68
Waste Levy on Coal Burning - World$7.5$10.41.42.9
Ban Bottom Trawling - E.U.$0.34$2.427.12.15.5162,000km²
Department of Energy Support for Offshore Wind$11.6349$12.07141.00.434.006
Derelict Fishing Gear Buyback$0.1186$7.451262.87.3
Increase Marine Protected Areas - World$835$1,2741.5439.068078,000,000km²
IUU Fishing Global Reporting Requirements$2.4$114.68.6
Ocean Geoengineering Research - World$1.4$47.533.946.12,500
Scientific Whaling Ban - World$0.31$1.4564.71.10.24
Set Ship Speed Limits - World$16.5$55.43.438.993.2
Asteroid Monitoring and Deflection - US$0.25$8.935.68.7
Low Ozone Depletion Rocket Fuels$29.4655$52.38811.822.9