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Home My WebLink About20240322Avista to Staff PR 1 Supplemental Attachment A.pdf2010 AVISTA UTILITIES Distribution Annual Cost Ratio Calculation RATE BASE Distribution Plant Investment Gross Distribution Plant Investment Less Accumulated Depreciation Net Distribution Plant Investment Credit for Accumulated Deferred Income Tax Total Accumulated Deferred Income Tax (A/C 282) -Electric Allocation Factor based on Distribution Plant�/ Total Accumulated Deferred Income Taxes -Distribution Total Distribution-Related Rate Base Fixed Charge Rate§/ RETURN ON DISTRIBUTION RATE BASE General and Intangible Plant Gross General and Intangible Plant Less Accumulated Depreciation Net General and Intangible Plant Allocation Factor based on Distribution Wages and Salaries 1/ General and Intangible Plant Allocated to Distribution Common Plant Gross Common Plant Less Accumulated Depreciation Net Common Plant Allocation to Electric Function '1/ Allocation Factor based on Distribution Wages and Salaries 1/ Common Plant Allocated to Distribution Deferred Income Tax Total Accumulated Deferred Income Tax (A/C 282) -Electric Allocation Factor based on General, Intangible, & Common Plant 1./ Accumulated Deferred Income Tax Allocated to Distribution Total General, Intangible and Common Plant Allocated to Distribution Fixed Charge Rate §/ RETURN ON GENERAL, INTANGIBLE AND COMMON PLANT Other Rate Base Materials and Supplies Cash Working Capital -Distribution and A&G (1/8 Distribution O&M) Total Other Rate Base Fixed Charge Rate §/ RETURN ON OTHER RATE BASE TOTAL RETURN ON RATE BASE Distribution Annual Cost Ratio $1,082,241,835 FF1, p207 -327,916,454 FF1, p219 $754,325,381 -$253,937,772 FF1, p275 37.00% -$93,949,484 $660,375,897 11.62% $76,753,129 $150,557,692 FF1, pp205-207 -45,388,645 FF1, p219 $105,169,047 26.79% $28,169,609 $173,829,729 FF1, p356 -46,741,851 FF1, p356 $127,087,878 $94,453,203 26.79% $25,299,362 -$253,937,772 FF1, p275 2.56% -$6,504,786 $46,964,185 11.62% $5,458,479 $320,705 FF1, p227 5,724,208 $6,044,913 11.62% $702,579 $82,914,187 Page 1 of 4 Staff_PR_001 Supplemental Attachment A Page 1 of 4 RECEIVED Friday, March 22, 2024 11:27:14 AM IDAHO PUBLIC UTILITIES COMMISSION Staff_PR_001 Supplemental Attachment A Page 2 of 4 RECEIVED Friday, March 22, 2024 11:27:14 AM IDAHO PUBLIC UTILITIES COMMISSION Staff_PR_001 Supplemental Attachment A Page 3 of 4 RECEIVED Friday, March 22, 2024 11:27:14 AM IDAHO PUBLIC UTILITIES COMMISSION Staff_PR_001 Supplemental Attachment A Page 4 of 4 RECEIVED Friday, March 22, 2024 11:27:14 AM IDAHO PUBLIC UTILITIES COMMISSION