; (ii) opportunities for new codes and standards savings; (iii) technology improvements; and (iv) other indicators of cost-effective energy efficiency potential. (D) Minimum percentage In no case shall a performance standard established under this paragraph for any calendar year be less than the applicable performance standard for calendar year 2035 (including any increase in the standard for calendar year 2035 established pursuant to paragraph (4)). (4) Midcourse review and adjustment of performance standards (A) In general Not later than December 31, 2029, and at 10-year intervals thereafter, the Secretary shall— (i) review the most recent performance standards established under paragraph (2) or (3)