Home › CFR › Title 18 › Part 30118 CFR Part 301 — Average System Cost Methodology for Sales from Utilities to Bonneville Power Administration Under Northwest Power Act§ 301.1— Applicability.§ 301.2— Definitions.§ 301.3— Filing procedures.§ 301.4— Exchange Period Average System Cost determination.§ 301.5— Changes in Average System Cost methodology.§ 301.6— Appendix 1 instructions.§ 301.7— Average System Cost methodology functionalization.