Ferc Account 355

FERC Account 355 records the cost of poles and fixtures used on subtransmission lines operating at distribution-level voltages but serving a transmission function.

Definition

Record in this account the cost of poles and fixtures used on transmission lines where pole-type construction is used rather than tower construction.

Account 355 captures the cost of wood, concrete, or steel poles (and related fixtures) used on transmission lines where the line voltage and function classify the line as transmission, but pole-type construction is used rather than lattice towers. This typically applies to subtransmission lines. It is distinct from Account 354 (Towers) and from distribution poles (Account 364/365).

What is typically included

• Wood, concrete, or steel poles on transmission-class pole lines
• Cross arms, braces, and hardware on transmission pole structures
• Guys and anchors associated with transmission poles
• Pole foundations and setting costs
• Pole line hardware integral to the structure (excluding conductors)

What is generally not included

• Steel towers for bulk transmission lines (Account 354)
• Distribution line poles (Accounts 364 and 365)
• Transmission conductors and insulators strung on poles (Account 356)
• Land rights for pole line routes (Account 350)
• Routine pole treatment and maintenance charged to expense

Why this account matters

• Distinguishes pole-type transmission construction from tower-type (Account 354)
• Ensures proper depreciation rates are applied based on pole type and voltage class
• Required for accurate FERC Form 1 transmission plant classification
• Supports wholesale transmission rate base calculations
• Facilitates retirement accounting when individual poles are retired or replaced