WAC 194-37-090   Additional documentation of efficiency from distribution system loss reduction improvements, including peak demand management and voltage regulation.  (1) To the extent a utility can document a distribution system upgrade or management practice results in lower line losses and/or transformation losses, the avoided energy supply requirement to serve customers may be included in the utility's assessment of its ten-year resource potential and may count as conservation achievement towards the utility's biennial target.

     (2) A utility that counts distribution system improvements in meeting its obligations under RCW 19.285.040 shall document these savings on either a component-performance basis or a system-analysis basis and shall indicate these savings distinctly from end-use and production efficiency savings.

     (a) Component-performance basis. A utility that implements the component-performance basis for documenting distribution system improvements shall identify the components of the distribution system that were replaced, and the savings from replacement. For components that are not included in the list of measures approved by the regional technical forum and listed on the planning, tracking and reporting web site, the calculation shall be prepared under the direction of, and carry the stamp of a registered professional electrical engineer licensed by the Washington department of licensing.

     (b) System-analysis basis. A utility that implements the system analysis basis for documenting conservation savings from distribution system improvements shall provide the following:

     (i) For distribution system upgrades, the utility will prepare a distribution flow analysis to compare the annual energy losses of the system being replaced or upgraded to the final system as installed.

     (ii) For conservation voltage regulation, the utility will prepare a distribution flow analysis to compare the annual energy losses of the system before and after the implementation of a voltage regulation program. The difference in annual kilowatt-hour requirement at the utility point(s) of receipt (for distribution utilities) or net energy for load for generating utilities may be counted as conservation savings.

     (iii) For peak demand management, the utility will prepare a distribution flow analysis to compare the annual energy losses of the system before and after implementation of the peak demand management program. The change in net energy losses may be counted as conservation savings. Any net reduction in energy sales (economic curtailment) shall not be included in conservation savings.

     (iv) The distribution flow analysis conducted for (b)(i), (ii), or (iii) of this subsection shall be prepared under the direction of, and carry the stamp of a registered professional electrical engineer licensed by the Washington department of licensing.



[Statutory Authority: RCW 19.285.080(2). 08-07-079, § 194-37-090, filed 3/18/08, effective 4/18/08.]