(i) the cost of carbon dioxide; 
(ii) the cost of methane; 
(iii) the cost of nitrous oxide; and 
(iv) the cost of any other greenhouse 
gas estimated by the Working Group. 
(4) WORKING
GROUP.—The term ‘‘Working 
Group’’ means the Interagency Working Group on 
the Costs of Greenhouse Gases established under 
section 5(a). 
SEC. 4. COST OF CARBON DIOXIDE, COST OF METHANE, 
AND COST OF NITROUS OXIDE. 
(a) COST OF CARBON DIOXIDE.—In developing any 
rulemaking that requires a regulatory impact analysis, 
making any substantial procurement decision for which 
the cost of carbon dioxide is not applied before the date 
on which a revised version of the costs of greenhouse gases 
is finalized, the head of any Federal agency shall consider 
and document the cost of carbon dioxide in accordance 
with the amounts specified in the following table: 
Cost of Carbon Dioxide, 2010 Through 2050 (in 2007 
Dollars per Metric Ton of Carbon Dioxide), Dis-
count Rate and Statistic 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2010 
$10 
$31 
$50 
$86 
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Cost of Carbon Dioxide, 2010 Through 2050 (in 2007 
Dollars per Metric Ton of Carbon Dioxide), Dis-
count Rate and Statistic—Continued 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2011 
$11 
$32 
$51 
$90 
2012 
$11 
$33 
$53 
$93 
2013 
$11 
$34 
$54 
$97 
2014 
$11 
$35 
$55 
$101 
2015 
$11 
$36 
$56 
$105 
2016 
$11 
$38 
$57 
$108 
2017 
$11 
$39 
$59 
$112 
2018 
$12 
$40 
$60 
$116 
2019 
$12 
$41 
$61 
$120 
2020 
$12 
$42 
$62 
$123 
2021 
$12 
$42 
$63 
$126 
2022 
$13 
$43 
$64 
$129 
2023 
$13 
$44 
$65 
$132 
2024 
$13 
$45 
$66 
$135 
2025 
$14 
$46 
$68 
$138 
2026 
$14 
$47 
$69 
$141 
2027 
$15 
$48 
$70 
$143 
2028 
$15 
$49 
$71 
$146 
2029 
$15 
$49 
$72 
$149 
2030 
$16 
$50 
$73 
$152 
2031 
$16 
$51 
$74 
$155 
2032 
$17 
$52 
$75 
$158 
2033 
$17 
$53 
$76 
$161 
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Cost of Carbon Dioxide, 2010 Through 2050 (in 2007 
Dollars per Metric Ton of Carbon Dioxide), Dis-
count Rate and Statistic—Continued 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2034 
$18 
$54 
$77 
$164 
2035 
$18 
$55 
$78 
$168 
2036 
$19 
$56 
$79 
$171 
2037 
$19 
$57 
$81 
$174 
2038 
$20 
$58 
$82 
$177 
2039 
$20 
$59 
$83 
$180 
2040 
$21 
$60 
$84 
$183 
2041 
$21 
$61 
$85 
$186 
2042 
$22 
$61 
$86 
$189 
2043 
$22 
$62 
$87 
$192 
2044 
$23 
$63 
$88 
$194 
2045 
$23 
$64 
$89 
$197 
2046 
$24 
$65 
$90 
$200 
2047 
$24 
$66 
$92 
$203 
2048 
$25 
$67 
$93 
$206 
2049 
$25 
$68 
$94 
$209 
2050 
$26 
$69 
$95 
$212. 
(b) COST OF METHANE.—In developing any rule-
making that requires a regulatory impact analysis, making 
any substantial procurement decision for which the cost 
of methane is not applied before the date on which a re-
vised version of the costs of greenhouse gases is finalized, 
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the head of any Federal agency shall consider and docu-
ment the cost of methane in accordance with the amounts 
specified in the following table: 
Cost of Methane, 2010 Through 2050 (in 2007 Dollars 
per Metric Ton of Methane), Discount Rate and 
Statistic 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2010 
$370 
$870 
$1,200 
$2,400 
2011 
$380 
$910 
$1,200 
$2,500 
2012 
$400 
$940 
$1,300 
$2,600 
2013 
$420 
$970 
$1,300 
$2,700 
2014 
$440 
$1,000 
$1,300 
$2,700 
2015 
$450 
$1,000 
$1,400 
$2,800 
2016 
$470 
$1,100 
$1,400 
$2,900 
2017 
$490 
$1,100 
$1,500 
$3,000 
2018 
$510 
$1,100 
$1,500 
$3,000 
2019 
$520 
$1,200 
$1,500 
$3,100 
2020 
$540 
$1,200 
$1,600 
$3,200 
2021 
$560 
$1,200 
$1,600 
$3,300 
2022 
$590 
$1,300 
$1,700 
$3,400 
2023 
$610 
$1,300 
$1,700 
$3,500 
2024 
$630 
$1,400 
$1,800 
$3,600 
2025 
$650 
$1,400 
$1,800 
$3,700 
2026 
$670 
$1,400 
$1,900 
$3,800 
2027 
$700 
$1,500 
$1,900 
$3,900 
2028 
$720 
$1,500 
$2,000 
$4,000 
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Cost of Methane, 2010 Through 2050 (in 2007 Dollars 
per Metric Ton of Methane), Discount Rate and 
Statistic—Continued 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2029 
$740 
$1,600 
$2,000 
$4,100 
2030 
$760 
$1,600 
$2,000 
$4,200 
2031 
$790 
$1,600 
$2,100 
$4,300 
2032 
$820 
$1,700 
$2,100 
$4,500 
2033 
$850 
$1,700 
$2,200 
$4,600 
2034 
$880 
$1,800 
$2,200 
$4,700 
2035 
$900 
$1,800 
$2,300 
$4,900 
2036 
$930 
$1,900 
$2,400 
$5,000 
2037 
$960 
$1,900 
$2,400 
$5,100 
2038 
$990 
$2,000 
$2,500 
$5,200 
2039 
$1,000 
$2,000 
$2,500 
$5,400 
2040 
$1,000 
$2,000 
$2,600 
$5,500 
2041 
$1,100 
$2,100 
$2,600 
$5,600 
2042 
$1,100 
$2,100 
$2,700 
$5,700 
2043 
$1,100 
$2,200 
$2,700 
$5,800 
2044 
$1,200 
$2,200 
$2,800 
$5,900 
2045 
$1,200 
$2,300 
$2,800 
$6,100 
2046 
$1,200 
$2,300 
$2,900 
$6,200 
2047 
$1,300 
$2,400 
$2,900 
$6,300 
2048 
$1,300 
$2,400 
$3,000 
$6,400 
2049 
$1,300 
$2,500 
$3,000 
$6,500 
2050 
$1,300 
$2,500 
$3,100 
$6,700. 
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(c) COST OF NITROUS OXIDE.—In developing any 
rulemaking that requires a regulatory impact analysis, 
making any substantial procurement decision for which 
the cost of nitrous oxide is not applied before the date 
on which a revised version of the costs of greenhouse gases 
is finalized, the head of any Federal agency shall consider 
and document the cost of nitrous oxide in accordance with 
the amounts specified in the following table: 
Cost of Nitrous Oxide, 2010 Through 2050 (in 2007 
Dollars per Metric Ton of Nitrous Oxide), Discount 
Rate and Statistic 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2010 
$3,400 
$12,000 
$18,000 
$31,000 
2011 
$3,500 
$12,000 
$18,000 
$32,000 
2012 
$3,700 
$12,000 
$19,000 
$33,000 
2013 
$3,800 
$13,000 
$19,000 
$34,000 
2014 
$3,900 
$13,000 
$20,000 
$34,000 
2015 
$4,000 
$13,000 
$20,000 
$35,000 
2016 
$4,200 
$14,000 
$20,000 
$36,000 
2017 
$4,300 
$14,000 
$21,000 
$37,000 
2018 
$4,400 
$14,000 
$21,000 
$38,000 
2019 
$4,600 
$15,000 
$22,000 
$38,000 
2020 
$4,700 
$15,000 
$22,000 
$39,000 
2021 
$4,900 
$15,000 
$23,000 
$40,000 
2022 
$5,000 
$16,000 
$23,000 
$41,000 
2023 
$5,200 
$16,000 
$23,000 
$42,000 
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Cost of Nitrous Oxide, 2010 Through 2050 (in 2007 
Dollars per Metric Ton of Nitrous Oxide), Discount 
Rate and Statistic—Continued 
Year 
5 Percent 
Average 
3 Percent 
Average 
2.5 Per-
cent Av-
erage 
High Im-
pact (95th 
Percentile 
at 3 Per-
cent Dis-
count 
Rate) 
2024 
$5,400 
$16,000 
$24,000 
$43,000 
2025 
$5,500 
$17,000 
$24,000 
$44,000 
2026 
$5,700 
$17,000 
$25,000 
$45,000 
2027 
$5,900 
$17,000 
$25,000 
$46,000 
2028 
$6,000 
$18,000 
$26,000 
$47,000 
2029 
$6,200 
$18,000 
$26,000 
$48,000 
2030 
$6,300 
$19,000 
$27,000 
$49,000 
2031 
$6,500 
$19,000 
$27,000 
$50,000 
2032 
$6,800 
$19,000 
$28,000 
$51,000 
2033 
$7,000 
$20,000 
$28,000 
$52,000 
2034 
$7,200 
$20,000 
$29,000 
$54,000 
2035 
$7,400 
$21,000 
$29,000 
$55,000 
2036 
$7,600 
$21,000 
$30,000 
$56,000 
2037 
$7,800 
$21,000 
$30,000 
$57,000 
2038 
$8,000 
$22,000 
$31,000 
$58,000 
2039 
$8,200 
$22,000 
$31,000 
$59,000 
2040 
$8,400 
$23,000 
$32,000 
$60,000 
2041 
$8,600 
$23,000 
$32,000 
$61,000 
2042 
$8,800 
$23,000 
$33,000 
$62,000 
2043 
$9,100 
$24,000 
$33,000 
$64,000 
2044 
$9,300 
$24,000 
$34,000 
$65,000 
2045 
$9,500 
$25,000 
$34,000 
$66,000 
2046 
$9,800 
$25,000 
$35,000 
$67,000 
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