Ferc Uniform System of Accounts

The Foundation of Electric Utility Accounting

The Federal Energy Regulatory Commission Uniform System of Accounts (FERC USoA) is the accounting framework that governs financial reporting for investor-owned electric utilities and, by adoption, provides the standard that electric cooperatives and many municipal utilities use for their accounting. Established and maintained by FERC, the USoA provides a standardized chart of accounts, definitions, and instructions that make utility financial data consistent and comparable across the industry. For utility accounting professionals, the FERC USoA is the operating manual for the accounting function.

Structure of the FERC Uniform System of Accounts

The FERC USoA is organized into several major sections. Balance sheet accounts cover assets, liabilities, and equity in the 100–200 range. Current assets include Account 142 (Customer Accounts Receivable), Account 154 (Plant Materials and Operating Supplies), and Account 174 (Miscellaneous Current Assets). Income statement accounts use numbers in the 400–500 range: operating revenues in the 400s, operating expenses in the 500s (O&M, Depreciation, Taxes), and other income items below the operating income line.

Electric Plant Accounts: The Heart of Utility Accounting

The electric plant accounts — in the 300–399 range — govern how capital investments are recorded and classified. Distribution plant (Accounts 360–373) covers the local delivery system: land (360), structures (361), station equipment (362), poles and fixtures (364), overhead conductors (365), underground conduit (366), underground conductors (367), line transformers (368), services (369), meters (370), customer premise installations (371), and street lighting (373). Transmission plant (Accounts 350–359) covers high-voltage infrastructure, and general plant (Accounts 389–399) covers equipment used across the utility.

The Plant Instructions section of the USoA defines what costs belong in work orders, how overhead should be allocated, and how AFUDC should be calculated. These instructions are the rules governing construction accounting.

Why It Matters for Rates and Regulation

The FERC USoA matters beyond regulatory compliance because the structure of the accounts directly affects how costs are allocated in cost-of-service studies and how rates are designed. Distribution plant accounts drive the distribution component of the cost of service. Operating expense accounts feed the revenue requirement. Getting classifications right is not just good accounting — it is the foundation of equitable rate-making and sound financial management for the long term.