1. Calculate the benefits for each year of each scenario and discount them in columns H, I, and J.
2. Sum up these benefits to calculate the present value for each scenario.
3. Calculate the costs for each year of each scenario and discount them in columns L and M.
4. In row 51, calculate the net present value for each scenario by subtracted the appropriate discounted costs from each of the discounted benefits.

B M N Project emission impacts and compliance costs, relative to base year 2020 Co2 Emissions 2020 2025 2030 Base Case 2155 2165 2227 Mass-based 2073 1901 1814 Co-benefits Sox difference Base 1311 1275 1314 54 185 280 Mass-based 1257 1090 103 10 Benefit per ton 12,000 11 Nox 12 Base 1333 1302 1293 61 202 278 13 Mass-based 1272 1100 1015 14 Benefit per ton 14,000 15 Ha 16 Base 6.6 6.5 17 Mass-based 18 Benefit per ton 19 20 Compliance costs in billions 21 Mass based 1.4 3 5.1 The power industry's *compliance costs* are represented in this analysis as the change in electric power generation 22 costs between the base case and illustrative CPP scenarios, including the cost of demand-side energy efficiency 23 programs and measures and monitoring, reporting, and recordkeeping 24 [MR&R] costs. 25 26 Abatement of Abatement of Abatement of Cost of NO: per Scenario 1: PV Scenario 2: PV Scenario 3: PV CO2 benefits at CO2 relative to Sox relative to Now relative to Cost of 80* per ton ton (these are CO2 only at All Benefits at variable discounting: 3.5% year 0 to |Compliance PV PV costs at variable SC Carbon base in millions base in millions base in millions of (these are benefits of benefits of avoided 5%, low carbon 5%, low carbon 10; 1.5% years 11-20, medium carbon costs in costs discounting: 3.5% year 27 SC Carbon low medium of short tons of short tons I short tons avoided pollution) pollution price price price millions at 5% 0 to 10; 1.5% years 11-20 Time year 28 40.0 81.0 34.0 61.0 9200 14000 1400,0 2020 29 7.2 40.8 17.8 80. 89.2 92000 14000 720.00 2021 30 7.4 41.6 154.6 106.4 117.4 92000 14000 2040.00 2022 31 7.6 42 4 191.4 132.6 145.6 92000 14000 2360.0 2023 32 7.8 43.2 228.2 158.8 173.8 92000 14000 2680.00 2024 33 8.0 44.0 265.0 185.0 202.0 92000 14000 3000.00 2025 34 8.4 44.8 294.6 204.0 217.2 92000 14000 3420.00 2026 8.8 45.6 324.2 223.0 236.2 92000 14000 3840.00 2027 9.2 46.4 353.8 :42. 255.2 92000 14000 4260.00 2028 9.6 47.2 383.4 261.0 274.2 92000 14000 4680.00 2029 10.0 48.0 413.0 280.0 278.0 92000 14000 5100.00 2030 10.4 49.0 413.0 280.0 278.0 92000 14000 5100.00 11 2031 10.8 50.0 413.0 280. 278.0 92000 14000 5100.00 12 2032 11.2 51.0 413.0 280.0 278.0 92000 14000 5100.00 2033 11.6 52.0 413.0 280.0 278.0 92000 14000 5100.00 2034 12.0 53.0 413.0 280.0 278.0 92000 14000 100.00 2035 12.6 54.0 413.0 280.0 278.0 92000 14000 5100.00 2036 13.2 55.0 413.0 280.0 278.0 92000 14000 5100.00 2037 13.8 56.0 413.0 280.0 278.0 92000 14000 5100.00 2038 14.4 57.0 413.0 280.0 278.0 92000 14000 5100.00 2039 15.0 58.0 413.0 280.0 278.0 92000 14000 5100.00 2040 PV benefits PV costs NPY