All four cited sources are reachable, support the outcome, and their quotes appear verbatim. Leadership (not merely "fighting") is documented across the promise's components: (1) NATIONAL CLEAN ENERGY TARGETS — the EDF release confirms Smith introduced/lead-sponsored the Clean Energy Standard Act (federal CES to net-zero electricity by midcentury), and E&E News verbatim calls her "the architect of one of the most aggressive climate ideas in years, the Clean Electricity Performance Program"; both are genuine authorship/lead-sponsorship, though neither became law. (2) CLEAN/RENEWABLE ENERGY TAX CREDITS — her Senate accomplishments page (verbatim) states she "played a key role in securing major climate and energy provisions in the Inflation Reduction Act, including tax credits for clean energy technologies, direct pay ... and funding for REAP and for rural electric cooperatives," and Senate Roll Call Vote 325 confirms "Smith (D-MN), Yea" on H.R. 5376 (the IRA, passed 50-50 with VP tiebreak) — enacted. (3) BIOFUELS — the same page confirms a 10-year biofuel-credit extension and new sustainable aviation fuel credits — enacted. Leadership is strongest on the components that did NOT become law (CES/CEPP), while the enacted tax-credit/biofuel role rests partly on her own office's "key role" framing, corroborated by her Agriculture/Energy committee seat and the roll-call vote. The rating holds; the only defensible downgrade — weighting the legislative failure of CES/CEPP more heavily — would land at PARTIAL, not UNRATABLE, hence high but not maximal confidence.