Scope and limits

This is a floor under the stated baseline efficiency/capacity-factor/discount-rate assumptions; CORRECTED 2026-09-06 BY RUNNING THE MODEL RATHER THAN READING ITS OUTPUT. With free launch AND the whole companion package applied together (a different, combined case from the single-lever floor in the claim), Section 8 gives a floor of 0.0410 to 0.0641 USD/kWh across the full twelve-cell grid, with SEVEN of the twelve cells BELOW 0.05. The previous text here said 0.051 to 0.064, "ABOVE 0.05 and never below it", and that was wrong. The cause is a reporting artefact in the script, not an arithmetic error: section_breakeven() prints a floor ONLY for cells where the break-even search FAILS, so the five printed values are the five worst cells and the seven cheaper ones print a break-even launch cost instead. Reading the printed output therefore samples the failures and calls it the range. Re-derived here by importing the module and evaluating lcoe_only(clone_params(companion_package(life, lr), starship_cost=0.0)) over all twelve cells; the five printed values reproduce exactly as 0.0509 to 0.0641, which is how the artefact was confirmed rather than inferred. This correction runs in SBSP's FAVOUR, unlike most found in this register.