; and (B) each retail natural gas supplier shall submit to the Secretary a report, in accordance with regulations promulgated by the Secretary, demonstrating that it has achieved cumulative consistent natural gas savings (adjusted to account for any attrition of savings measures implemented in prior years) in each calendar year that are equal to the applicable percentage of the base quantity of such retail natural gas supplier. (2) Standards for 2021 through 2035 For each of calendar years 2021 through 2035, the applicable percentages are as follows: Calendar Year Cumulative Electricity Savings Percentage Cumulative Natural Gas Savings Percentage 2021 1.00 0.50 2022 2.00 1.25 2023 3.00 2.00 2024 4.25 3.00 2025 5.50 4.00 2026 7.00 5.00 2027 8.50 6.00 2028 10.00 7.00 2029 11.50 8.00 2030 13.00 9.00 2031 14.75 10.00 2032 16.50 11.00 2033 18.25 12.00 2034 20.00 13.00 2035 22.00 14.00 (3) Subsequent years (A) Calendar years 2036 through 2045 Not later than December 31, 2030, the Secretary shall promulgate regulations establishing performance standards (expressed as applicable percentages of base quantity for both cumulative electricity savings and cumulative natural gas savings) for each of calendar years 2036 through 2045. (B) Requirements The Secretary shall establish standards under this paragraph at levels reflecting the maximum achievable level of cost-effective energy efficiency potential, taking into account— (i) cost-effective energy savings achieved by leading retail electricity suppliers and retail natural gas suppliers; (ii) opportunities for new State and local codes and standards savings; (iii) technology improvements