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HomeMy WebLinkAbout20210601Quarterly Report.pdfAvista Corp. 1411 East Mission P.O.Box 3727 Spokane.Washington 99220-0500 Telephone 509-489-0500 Toll Free 800-727-9170 May 28,2021 Commission Secretary Idaho Public Utilities Commission 11331 W.Chinden Blvd Bldg 8 Suite 201-A Boise,ID 83714 RE:AVU-E-19-06/AVU-G-19-03 Electric and Natural Gas Fixed Cost AdjustmentMechanismQuarterlyReport Attached for filing with the Commission is an electronic copy of Avista's Electric and Natural GasFixedCostAdjustmentMechanismQuarterlyReport. The report consists of spreadsheets showing the monthlyrevenue deferral calculations for January,February,and March 2021.Also included in the report are the monthlygeneral ledger balancesresultingfromthedeferralandamortizationactivityduringthe1stquarterof2021. Questions regarding this filing should be directed to Joel Anderson at (509)495-2811. Sincerely, /s/Joe Miller Joe Miller Senior Manager of Rates and Tariffs Enc. Av i s t a Co r p o r a t i o n Fix e d Co s t Ad j u s t m e n t Me c h a n i s m Id a h o Ju r i s d i c t i o n Qu a r t e r l y Re p o r t fo r 1s t Qu a r t e r 20 2 1 Av i s t a Ut i l i t i e s El e c t r i c Fix e d Co s t Ad j u s t m e n t Me c h a n i s m (I d a h o ) De v e l o p m e n t of El e c t r i c De f e r r a l s (1 8 Mo n t h s En d e d Ju n e 20 2 1 ) AV U - E - 1 9 - 0 4 FC A Ba s e - Ra t e s Eff e c t i v e 12 / 1 / 2 0 1 9 Se e No t e s ta b ls t Qu a r t e r Li n e Re v i s e d Re v i s e d Re v i s e d 20 2 1 15 Mo n t h s En d e d No . So u r c e Ja n - 2 1 Fe b - 2 1 Ma r - 2 1 To t a l 3/ 3 1 / 2 0 2 1 (a ) (b ) (o ) (p ) (q ) Re s i d e n t i a l Gr o u p 1 To t a l Ac t u a l Bil l e d Cu s t o m e r s Re v e n u e Re p o r t s I 13 . 4 0 3 11 3 , 4 0 3 11 3 , 4 0 3 34 0 , 2 0 9 1,6 8 1 , 2 7 0 2 To t a l Ac t u a 1 U s a g e (k W h s ) Re v e n u e Re p o r t s 13 0 , 1 9 1 , 6 7 4 12 2 , 3 8 8 , 5 8 8 l l0 . 3 5 9 . 2 1 7 36 2 , 9 3 9 , 4 7 9 1,5 8 1 , 0 9 8 , 1 9 8 3 To t a l A c t u a l B a s e R a t e R e v e n u e Re v e n u e R e p o r t s 5 12 , 4 4 1 . 0 1 0 $ 11 . 7 3 5 . 5 3 1 5 10 . 6 2 1 , 3 1 9 $ 34 , 7 9 7 , 8 6 0 15 1 , 8 1 9 , 8 1 3 4 To t a l A c t u a l F i x e d C h a r g e R e v e n u e Re v e n u e R e p o r t s 5 65 0 , 7 0 1 5 66 1 , 6 1 8 $ 73 6 , 0 0 9 $ 2, 0 4 8 , 3 2 8 10 , 1 2 9 , 7 4 3 Ex i s t i n g Cu s t o m e r s 5 Ac t u a l Cu s t o m e r s on Sy s t e m Du r i n g Te s t Ye a r (1 ) - (1 6 ) 10 8 , 6 6 6 10 8 , 7 9 9 10 8 , 0 0 3 32 5 , 4 6 8 1,6 2 6 , 0 3 9 6 Mo n t h l y Fix e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $ 86 . 9 0 $ 66 . 1 4 $ 70 . 6 2 $7 4 . 5 6 $6 3 . 4 1 7 Fi x e d Co s t Ad j u s t m e n t Re v e n u e (5 ) x (6 ) $ 9, 4 4 3 , 2 6 9 $ 7,1 9 6 , 4 6 7 $ 7,6 2 7 , 0 7 4 5 24 , 2 6 6 , 8 1 0 $ 10 3 , 1 0 9 , 1 0 0 8 Ac t u a l Ba s e Ra t e Re v e n u e (3 ) - (1 9 ) $ 12 , 0 1 1 , 9 3 5 $ 11 , 3 4 1 , 8 9 9 $ 10 , 1 9 7 , 6 4 3 $ 33 , 5 5 1 , 4 7 7 $ 14 8 , 1 9 8 , 6 5 6 9 Ac t u a l Fix e d Ch a r g e Re v e n u e (4 ) - (2 0 ) $ 62 3 , 2 6 2 $ 63 4 , 9 9 8 $ 70 4 , 8 0 6 $ 1,9 6 3 , 0 6 5 5 9, 8 1 5 , 9 5 0 10 Ac t u a l U s a g e ( k W h s ) (2 ) - ( 2 1 ) 12 5 , 7 4 2 , 5 6 2 11 8 , 3 1 5 , 8 4 2 10 5 , 9 8 3 , 3 7 7 35 0 , 0 4 1 , 7 8 1 1, 5 4 4 , 0 4 3 , 3 1 3 11 Lo a d C h a n g e A d j u s t m e n t R a t e ( $ / k W h ) Pa g e l $ 0.0 2 2 1 2 5 0.0 2 2 1 2 $ 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 $ 0.0 2 2 1 2 12 Va r i a b l e Po w e r Su p p l y Re v e n u e (1 0 ) x (1 I) $ 2, 7 8 1 , 4 2 5 $ 2, 6 1 7 , 1 4 6 $ 2, 3 4 4 , 3 5 2 $ 7, 7 4 2 , 9 2 4 $ 34 , 1 5 4 , 2 3 8 13 Cu s t o m e r Fix e d Co s t Ad j u s t m e n t Re v e n u e (8 ) - (9 ) -( 1 2 ) $ 8,6 0 7 , 2 4 8 $ 8,0 8 9 , 7 5 4 $ 7,1 4 8 , 4 8 5 $ 23 , 8 4 5 , 4 8 7 $ 10 4 , 2 2 8 , 4 6 8 14 Re s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $7 9 . 2 i $7 4 . 3 6 $6 6 . 1 9 $7 3 . 2 7 $6 4 . 1 0 15 Ex i s t i n g Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (7 ) - (1 3 ) $ 83 6 , 0 2 1 $ (8 9 3 . 2 8 7 ) $ 47 8 , 5 8 9 $ 42 1 , 3 2 3 $ (1 , 1 1 9 , 3 6 8 ) Ne w Cu s t o m e r s 16 Ac t u a l Cu s t o m e r s Ne w Sin c e Te s t Ye a r Re v e n u e Re p o r t s 4.7 3 7 4.6 0 4 5,4 0 0 14 , 7 4 1 55 , 2 3 1 17 Mo n t h l y Fix e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $5 4 . 4 8 $4 1 . 4 7 $4 4 . 2 7 $4 6 . 6 8 $4 0 . 2 1 18 Fix e d Co s t Ad j u s t m e n t Re v e n u e (1 6 ) x (1 7 ) 5 25 8 , 0 7 0 $ 19 0 , 9 1 3 $ 23 9 , 0 6 8 $ 68 8 , 0 5 0 $ 2, 2 2 0 , 9 2 7 19 Ac t u a l Ba s e Ra t e Re v e n u e Re v e n u e Re p o r t s $ 42 9 . 0 7 5 5 39 3 . 6 3 2 5 42 3 . 6 7 6 $ 1, 2 4 6 , 3 8 3 $ 3, 6 2 1 , 1 5 7 20 Ac t u a l Fix e d Ch a r g e Re v e n u e Re v e n u e Re p o r t s $ 27 , 4 3 9 $ 26 61 9 5 3! . 2 0 4 $ 85 , 2 6 3 5 31 3 , 7 9 2 21 Ac t u a l Us a g e (k W h s ) Re v e n u e Re p o r t s 4.4 4 9 , I 12 4.0 7 2 74 6 4.3 7 5 , 8 4 1 12 , 8 9 7 , 6 9 9 5 37 , 0 5 4 , 8 8 5 22 Lo a d Ch a n g e Ad j u s t m e n t Ra t e ($ / k W h ) Pa g e l 5 0. 0 2 2 1 2 5 0. 0 2 2 1 2 5 0. 0 2 2 1 2 5 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 23 Va r i a b l e Po w e r Su p p l y Re v e n u e (2 1 ) x (2 2 ) $ 98 , 4 1 4 $ 90 , 0 8 9 $ 96 , 7 9 4 $ 28 5 , 2 9 7 81 9 , 6 5 4 24 Fix e d P r o d u c t i o n a n d T r a n s m i s s i o n R a t e p e r k W h Pa g e l $ 0.0 2 5 1 1 $ 0.0 2 5 1 1 5 0.0 2 5 1 1 $ 0.0 2 5 1 1 $ 0.0 2 5 1 1 25 Fix e d Pr o d u c t i o n an d Tra n s m i s s i o n Re v e n u e (2 3 ) x (2 4 ) $ 11 1 , 7 1 7 $ 10 2 , 2 6 7 $ 10 9 , 8 7 7 32 3 , 8 6 1 $ 93 0 , 4 4 8 26 Cu s t o m e r Fix e d Co s t Ad j u s t m e n t Re v e n u e (1 9 ) - (2 0 ) - (2 3 ) - (2 5 ) 5 19 1 , 5 0 4 $ 17 4 , 6 5 7 $ 18 5 , 8 0 1 $ 55 1 , 9 6 2 $ 1,5 5 7 , 2 6 2 27 Re s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $4 0 . 4 3 $3 7 . 9 4 $3 4 . 4 1 $3 7 . 4 4 $2 8 . 2 0 28 Ne w Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (7 ) - (2 6 ) $ 66 , 5 6 6 $ 16 , 2 5 5 $ 53 , 2 6 7 $ 13 6 , 0 8 8 $ 66 3 , 6 6 4 29 To t a l Re s i d e n t i a l De f e r r a l - Su r c h a r g e (R e b a t e ) (1 5 ) + (2 8 ) $ 90 2 , 5 8 7 $ (8 7 7 , 0 3 2 ) $ 53 1 , 8 5 5 $ $5 7 , 4 1 0 $ (4 5 5 , 7 0 4 ) 30 De f e r r a l - Re v e n u e Re l a t e d Ex p e n s e s Re v Co n v Fa c t o r $ (4 , 9 2 0 ) $ 4,7 8 I $ (2 , 8 9 9 ) $ (3 , 0 3 8 ) $ 2, 4 8 4 31 Cu s t o m e r De p o s i t Ra t e 1.0 0 % 1.0 0 % 1.0 0 % 32 In t e r e s t on De f e r r a l Av g Ba l a n c e Ca l c $ (4 7 1 ) $ (4 6 0 ) $ (6 0 4 ) $ (1 , 5 3 5 ) $ (7 , 4 1 8 ) 33 Mo n t h l y Re s i d e n t i a l De f e r r a l To t a l s S 89 7 , 1 9 6 S (8 7 2 , 7 1 2 ) $ 52 8 , 3 5 2 S 55 2 , 8 3 7 5 (4 6 0 , 6 3 7 ) 34 Cu m u l a t i v e Re s i d e n t i a l De f e r r a l (R e b a t e ) / S u r c h a r g e I( ( 2 9 ) , (3 0 ) , (3 2 ) ) $ (1 1 6 , 2 7 8 ) $ (9 8 8 , 9 9 0 ) $ (4 6 0 , 6 3 7 ) ID Fi x e d Co s t Ad j u s t m e n t Re p o r t Q1 2 0 2 1 / El e c t r i c De f e r r a l Pa g e l of 9 Av i s t a Co r p o r a t i o n Fix e d Co s t Ad j u s t m e n t Me c h a n i s m Id a h o Ju r i s d i c t i o n Qu a r t e r l y Re p o r t fo r 1s t Qu a r t e r 20 2 1 Av i s t a Ut i l i t i e s Ele c t r i c Fix e d Co s t Ad j u s t m e n t Me c h a n i s m (Id a h o ) De v e l o p m e n t of El e c t r i c De f e r r a l s (1 8 Mo n t h s En d e d Ju n e 20 2 1 ) AV U - E - 1 9 - 0 4 FC A Ba s e - Ra t e s Ef f e c t i v e 12 / 1 / 2 0 1 9 Se e No t e s ta b 1s t Qu a r t e r Lin e Re v i s e d Re v i s e d Re v i s e d 20 2 1 15 Mo n t h s En d e d No . So u r c e Ja n - 2 1 Fe b - 2 1 Ma r - 2 1 To t a l 3/ 3 1 / 2 0 2 1 (a ) (b ) (o ) (p ) (q ) No n - R e s i d e n t i a l Gr o u p I To t a l Ac t u a l Bi l l e d Cu s t o m e r s Re v e n u e Re p o r t s 25 . 2 7 5 25 . 2 7 5 25 . 2 7 5 75 , 8 2 5 37 6 , 6 1 6 2 To t a l A c t u a 1 U s a g e ( k W h s ) Re v e n u e R e p o r t s 86 , 7 1 9 , 3 5 0 88 , 5 1 3 , 4 3 3 92 , 5 2 5 , 2 9 1 26 7 , 7 5 8 , 0 7 4 1,3 0 7 , 6 6 3 , 0 7 1 3 To t a l Ac t u a l Ba s e Ra t e Re v e n u e Re v e n u e Re p o r t s 7.I 5 8 . 5 4 6 7,4 4 1 , 5 4 5 7,9 7 2 , 8 2 1 22 , 5 7 2 , 9 1 2 11 1 , 0 8 6 , 4 0 5 4 To t a l Ac t u a l Fix e d Ch a r g e Re v e n u e Re v e n u e Re p o r t s 64 3 , 7 7 6 65 6 . 9 1 9 78 1 . 8 1 7 2, 0 8 2 , 5 1 2 10 , 7 2 1 , 6 6 8 Ex i s t i n e Cu s t o m e r s 5 Ac t u a l Cu s t o m e r s on Sy s t e m Du r i n g Te s t Ye a r (1 ) - (1 6 ) 23 , 9 1 4 23 , 6 6 3 23 , 3 8 3 70 , 9 6 0 36 0 , 3 9 8 6 Mo n t h l y Fix e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $2 0 7 . 6 6 $2 0 9 . 7 7 $1 9 6 . 1 1 $2 0 4 . 5 6 $1 9 9 . 5 7 7 Fi x e d Co s t Ad j u s t m e n t Re v e n u e (5 ) x (6 ) $ 4, 9 6 5 , 8 6 7 $ 4, 9 6 3 , 7 4 3 $ 4, 5 8 5 , 6 8 6 $ 14 , 5 1 5 , 2 9 6 $ 71 , 9 2 5 , 3 6 5 8 Ac t u a l Ba s e Ra t e Re v e n u e (3 ) - (1 9 ) $ 6, 8 6 2 , 9 7 6 $ 7,1 8 0 , 4 3 9 $ 7, 6 5 8 , 4 7 0 $ 21 , 7 0 1 , 8 8 6 $ 10 8 , 2 6 4 , 2 0 5 9 Ac t u a l Fix e d Ch a r g e Re v e n u e (4 ) - (2 0 ) $ 62 1 , 3 2 9 $ 63 2 , 2 8 6 $ 75 1 , 9 6 5 $ 2, 0 0 5 , 5 7 9 $ 10 , 4 6 0 , 8 3 2 10 Ac t u a l Us a g e (k W h s ) (2 ) - (2 1 ) 83 , 3 0 9 , 8 6 2 85 , 5 2 7 , 7 2 4 89 , 1 3 6 , 0 9 4 25 7 , 9 7 3 , 6 8 1 1,2 7 6 , 4 8 9 , 5 5 6 11 Lo a d C h a n g e A d j u s t m e n t R a t e ( $ / k W h ) Pa g e l $ 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 12 Va r i a b l e Po w e r Su p p l y Re v e n u e (1 0 ) x (1 1 ) $ 1,8 4 2 , 8 1 4 $ 1,8 9 1 , 8 7 3 $ 1, 9 7 1 , 6 9 0 $ 5, 7 0 6 , 3 7 8 $ 28 , 2 3 5 , 9 4 9 13 Cu s t o m e r Fix e d Co s t Ad j u s t m e n t Re v e n u e (8 ) - (9 ) -(1 2 ) $ 4, 3 9 8 , 8 3 3 $ 4,6 5 6 , 2 8 1 $ 4, 9 3 4 , 8 1 5 $ 13 , 9 8 9 , 9 2 9 $ 69 , 5 6 7 , 4 2 4 14 No n - R e s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $1 8 3 . 9 4 $1 9 6 . 7 7 $2 1 1 . 0 4 $1 9 7 . 1 5 $1 9 3 . 0 3 15 Ex i s t i n g Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (7 ) - (1 3 ) $ 56 7 , 0 3 4 $ 30 7 , 4 6 2 $ (3 4 9 , 1 2 9 ) $ 52 5 , 3 6 7 $ 2,3 5 7 , 9 4 1 Ne w Cu s t o m e r s 16 Ac t u a l Cu s t o m e r s Ne w Sin c e Te s t Ye a r Re v e n u e Re p o r t s 1,3 6 1 1,6 1 2 1,8 9 2 4,8 6 5 16 , 2 1 8 17 Mo n t h l y Fi x e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $1 1 2 . 0 5 $1 1 3 . 1 9 $1 0 5 . 8 2 $1 1 0 . 0 1 $1 0 8 . 0 2 18 Fix e d Co s t Ad j u s t m e n t Re v e n u e (1 6 ) x (1 7 ) $ 15 2 , 5 0 0 $ 18 2 , 4 6 2 $ 20 0 , 2 1 4 $ 53 5 , 1 7 6 $ 1,7 5 1 , 9 0 4 19 Ac t u a l B a s e R a t e R e v e n u e Re v e n u e R e p o r t s § 29 5 . 5 7 0 $ 26 L 1 0 6 $ 31 4 . 3 5 0 $ 87 1 , 0 2 6 $ 2,8 2 2 , 2 0 1 20 Ac t u a l Fix e d Ch a r g e Re v e n u e Re v e n u e Re p o r t s $ 12 . 4 4 7 5 24 , 6 3 4 $ 29 , 8 5 2 $ 76 , 9 3 2 $ 26 0 , 8 3 6 21 Ac t u a l U s a g e ( k W h s ) Re v e n u e R e p o n s 3,4 0 9 . 4 8 8 2,9 8 5 . 7 0 8 3, 3 8 9 , 1 9 6 $ 9, 7 8 4 , 3 9 3 $ 31 , 1 7 3 , 5 1 5 22 Lo a d Ch a n g e Ad j u s t m e n t Ra t e ($ / k W h ) Pa g e 1 $ 0. 0 2 2 1 2 $ 0. 0 2 2 1 2 5 0. 0 2 2 1 2 $ 0.0 2 2 1 2 $ 0. 0 2 2 1 2 23 Va r i a b l e Po w e r Su p p l y Re v e n u e (2 1 ) x (2 2 ) $ 75 , 4 1 8 $ 66 , 0 4 4 $ 74 , 9 6 9 $ 21 6 , 4 3 1 $ 68 9 , 5 5 8 24 Fix e d Pro d u c t i o n an d Tra n s m i s s i o n Ra t e pe r kW h Pa g e 1 wt d av g $ 0. 0 2 4 8 4 $ 0. 0 2 4 8 4 $ 0.0 2 4 8 4 $ 0.0 2 4 8 4 $ 0. 0 2 4 8 4 25 Fix e d Pro d u c t i o n an d Tra n s m i s s i o n Re v e n u e (2 3 ) x (2 4 ) $ 84 , 6 9 2 $ 74 , 1 6 5 $ 84 , 1 8 8 $ 24 3 , 0 4 4 $ 77 4 , 3 5 0 26 Cu s t o m e r Fix e d Co s t Ad j u s t m e n t Re v e n u e (1 9 ) - (2 0 ) - (2 3 ) - (2 5 ) $ 11 3 , 0 1 4 $ 96 , 2 6 3 $ 12 5 , 3 4 2 $ 33 4 , 6 1 9 $ 1,0 9 7 , 4 5 7 27 No n - R e s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $8 3 . 0 4 $5 9 . 7 2 $6 6 . 2 5 $6 8 . 7 8 $6 7 . 6 7 28 Ne w Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (7 ) - (2 6 ) $ 39 , 4 8 6 $ 86 , 1 9 9 $ 74 , 8 7 2 $ 20 0 , 5 5 7 $ 65 4 , 4 4 7 29 To t a l No n - R e s i d e n t i a l De f e r r a l - Su r c h a r g e (R e b a t e ) (1 5 ) + (2 8 ) $ 60 6 , 5 2 0 $ 39 3 , 6 6 1 $ (2 7 4 , 2 5 7 ) $ 72 5 , 9 2 4 $ 3, 0 1 2 , 3 8 8 30 De f e r r a l - Re v e n u e Re l a t e d Ex p e n s e s Re v Co n v Fa c t o r $ (3 , 3 0 6 ) $ (2 , 1 4 6 ) $ 1,4 9 5 $ (3 , 9 5 7 ) $ (1 6 , 4 2 1 ) 31 Cu s t o m e r D e p o s i t R a t e 1.0 0 % 1.0 0 % 1.0 0 % 32 In t e r e s t on De f e r r a l Av g Ba l a n c e Ca l c $ 2,1 6 9 $ 2, 5 8 5 $ 2,6 3 7 $ 7,3 9 1 $ 34 , 4 0 4 33 Mo n t h l y N o n - R e s i d e n t i a l D e f e r r a l T o t a l s S 60 5 , 3 8 2 $ 39 4 , 1 0 0 S (2 7 0 , 1 2 5 ) S 72 9 , 3 5 8 S 3, 0 3 0 , 3 7 2 Cu m u l a t i v e No n - R e s i d e n t i a l De f e r r a l 34 (R e b a t e ) / S u r c h a r g e I( ( 2 9 ) , (3 0 ) , (3 2 ) ) $ 2, 9 0 6 , 3 9 7 $ 3, 3 0 0 , 4 9 7 $ 3, 0 3 0 , 3 7 2 Re s lin e ( 3 4 ) +N o n - R e s 35 To t a l Cu m u l a t i v e De f e r r a l lin e (3 4 ) $ 2, 7 9 0 , 1 1 9 $ 2, 3 1 1 , 5 0 8 $ 2, 5 6 9 , 7 3 5 ID Fi x e d Co s t Ad j u s t m e n t Re p o r t 01 2 0 2 1 / El e c t r i c De f e r r a l Pa g e 2 of 9 Av i s t a Co r p o r a t i o n Fi x e d Co s t Ad j u s t m e n t Me c h a n i s m Id a h o Ju r i s d i c t i o n Qu a r t e r l y Re p o r t fo r 1s t Qu a r t e r 20 2 1 Av i s t a Ut i l i t i e s Na t u r a l Ga s Fi x e d Co s t Ad j u s t m e n t Me c h a n i s m (I d a h o ) De v e l o p m e n t of Na t u r a l Ga s De f e r r a l s (C a l e n d a r Ye a r 20 2 0 ) Wit h Sc h 17 2 Ta x Re f o r m Ad j - Ra t e s Ef f e c t i v e 1/ 1 / 2 0 1 9 Se e No t e s ta b 1s t Qu a r t e r 15 Mo n t h s Lin e Re v i s e d Re v i s e d Re v i s e d 20 2 1 En d e d No . So u r c e Ja n - 2 1 Fe b - 2 I Ma r - 2 1 To t a l 3/ 3 1 / 2 0 2 1 (a ) (b ) Re s i d e n t i a l Gr o u p 1 To t a l Ac t u a l Bi l l e d Cu s t o m e r s Re v e n u e Re p o r t s 87 , 9 6 8 87 , 9 6 8 87 , 9 6 8 26 3 , 9 0 4 1, 3 0 1 , 1 0 7 2 To t a l A c t u a l U s a g e ( T h e r m s ) Re v e n u e R e p o r t s 10 , 4 8 6 , 3 3 3 10 . 8 7 0 , 3 2 5 7, 1 5 3 , 0 3 6 28 , 5 0 9 , 6 9 5 92 , 7 0 0 , 7 5 1 3 To t a l Ac t u a l Ba s e Ra t e Re v e n u e Re v e n u e Re p o r t s 5 5, 2 8 9 . 6 5 2 5 5, 5 8 5 . 0 2 6 5 3. 8 5 7 , 5 0 3 $ 14 , 7 3 2 , 1 8 1 51 , 1 6 0 , 3 8 2 4 To t a l A c t u a l F i x e d C h a r g e R e v e n u e Re v e n u e R e p o r t s $ 51 1 , 5 1 6 5 51 6 , 4 4 5 5 56 4 , 5 8 8 $ 1,5 9 2 , 5 4 9 7, 8 3 9 , 9 4 1 6 Ex i s t i n g Cu s t o m e r s 7 Ac t u a l Cu s t o m e r s on Sy s t e m Du r i n g Te s t Ye a r (I ) - (2 2 ) 79 , 2 4 9 79 , 3 1 8 78 , 5 1 0 23 7 , 0 7 7 1,1 8 4 , 7 9 1 8 Mo n t h l y Fix e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $ 55 . 0 8 $ 46 . 8 9 $ 39 . 9 4 $4 7 . 3 3 $3 2 . 8 0 9 Fix e d Co s t Ad j u s t m e n t Re v e n u e (7 ) x (8 ) $ 4, 3 6 5 , 2 6 6 $ 3,7 1 9 , 3 5 1 $ 3, 1 3 5 , 4 5 9 $ 11 , 2 2 0 , 0 7 6 $ 38 , 8 6 1 , 0 9 9 10 11 Ac t u a l Ba s e Ra t e Re v e n u e (3 ) - (2 6 ) $ 4, 7 4 8 , 6 8 1 $ 5,0 4 6 , 6 9 6 $ 3, 3 9 1 , 3 1 4 $ 13 , 1 8 6 , 6 9 2 $ 51 , 1 6 0 , 3 8 2 12 Ac t u a l Fix e d Ch a r g e Re v e n u e (4 ) - (2 7 ) $ 45 9 , 7 1 9 $ 46 5 , 5 9 4 $ 50 9 , 4 7 6 $ 1, 4 3 4 , 7 8 8 $ 3,4 6 6 , 5 9 3 13 Ac t u a 1 U s a g e ( T h e r m s ) (2 ) - ( 2 8 ) 9, 4 3 3 , 3 7 0 9, 8 2 1 , 0 1 4 6, 2 6 8 , 1 8 3 25 , 5 2 2 , 5 6 7 92 , 0 2 1 , 0 9 0 16 Cu s t o m e r Fi x e d Co s t Ad j u s t m e n t Re v e n u e (l l) - (1 2 ) -( 1 5 ) $ 4, 2 8 8 , 9 6 3 $ 4, 5 8 1 , 1 0 2 $ 2, 8 8 1 , 8 3 9 $ 11 , 7 5 1 , 9 0 3 $ 39 , 6 2 6 , 7 5 3 17 Re s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $5 4 . 1 2 $5 7 . 7 6 $3 6 . 7 1 $4 9 . 5 7 $3 3 . 4 5 18 Ex i s t i n g Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (9 ) - (1 6 ) $ 76 , 3 0 3 $ (8 6 1 , 7 5 0 ) $ 25 3 , 6 2 0 $ (5 3 1 , 8 2 7 ) S (7 6 5 , 6 5 4 ) 19 2 I Ne w Cu s t o m e r s 22 Ac t u a l Cu s t o m e r s Ne w Sin c e Te s t Ye a r Re v e n u e Re p o r t s 8, 7 1 0 8,6 5 0 9,4 5 8 26 , 8 2 7 l 16 , 3 1 6 23 Mo n t h l y Fix e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $5 2 . 0 0 $4 4 . 2 7 $3 7 . 7 0 $4 4 . 4 7 $3 1 . 3 9 24 Fix e d Co s t Ad j u s t m e n t Re v e n u e (2 2 ) x (2 3 ) $ 45 3 , 3 9 9 $ 38 2 , 9 2 1 $ 35 6 , 5 9 3 $ 1, 1 9 2 , 9 1 3 $ 3, 6 5 1 , 3 0 8 26 Ac t u a l Ba s e Ra t e Re v e n u e Re v e n u e Re p o r t s 5 54 0 , 9 7 1 5 53 8 , 3 3 0 S 46 6 . 1 8 9 $ 1,5 4 5 , 4 8 9 $ 4, 3 7 3 , 3 4 9 27 Ac t u a l F i x e d C h a r g e R e v e n u e Re v e n u e R e p o r t s $ 51 . 7 9 8 5 50 , 8 5 I 5 55 . 1 1 2 $ 15 7 , 7 6 1 $ 67 9 , 6 6 1 28 Ac t u a l Us a g e (T h e r m s ) Re v e n u e Re p o r t s LG 5 2 . 9 6 3 LO 4 9 , 3 11 RS 4 , 8 5 4 $ 2,9 8 7 , 1 2 8 $ 7, 9 5 1 , 5 0 8 31 Fi x e d Pr o d u c t i o n an d UG St o r a g e Ra t e pe r Th e r m Pa g e 1 $ 0.0 2 5 9 9 $ 0.0 2 5 9 9 $ 0.0 2 5 9 9 $ 0. 0 2 5 9 9 $ 0, 0 2 5 9 9 32 Fi x e d Pr o d u c t i o n an d UG St o r a g e Re v e n u e (3 0 ) x (3 1 ) $ 27 , 3 6 8 $ 27 , 2 7 3 $ 22 , 9 9 8 $ 77 , 6 3 8 $ 20 6 , 6 6 8 33 Cu s t o m e r Fi x e d Co s t Ad j u s t m e n t Re v e n u e (2 6 ) - (2 7 ) - (3 0 ) - (3 2 ) $ 46 1 , 8 0 6 $ 46 0 , 2 0 6 $ 38 8 , 0 7 8 $ 1, 3 1 0 , 0 9 0 $ 3,4 8 7 , 0 2 0 34 Re s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $5 2 . 9 7 $5 3 . 2 0 $4 1 . 0 3 $4 8 . 8 3 $2 9 . 9 8 35 Ne w Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (9 ) - (3 3 ) $ (8 , 4 0 6 ) $ (7 7 , 2 8 5 ) $ (3 1 , 4 8 5 ) $ (1 1 7 , 1 7 6 ) $ 16 4 , 2 8 8 36 37 To t a l Re s i d e n t i a l De f e r r a l - Su r c h a r g e (R e b a t e ) (1 8 ) + (3 5 ) S 67 , 8 9 7 S (9 3 9 , 0 3 5 ) $ 22 2 , 1 3 5 $ (6 4 9 , 0 0 3 ) $ (6 0 1 , 3 6 6 ) 38 De f e r r a l - Re v e n u e Re l a t e d Ex p e n s e s Re v Co n v Fa c t o r $ (3 9 6 ) $ 5, 4 8 3 $ (1 , 2 9 7 ) S 3,7 9 0 $ 3, 5 1 1 39 Cu s t o m e r De p o s i t Ra t e 1. 0 0 % 1.0 0 % 1.0 0 % 40 In t e æ s t on De f e r r a l Av g Ba l a n c e Ca l c $ 58 $ (3 0 2 ) $ (6 0 0 ) $ (8 4 3 ) $ (1 1 , 7 9 3 ) 41 Mo n t h l y Re s i d e n t i a l De f e r r a l To t a l s $ 67 , 5 5 9 $ (9 3 3 , 8 5 5 ) S 22 0 , 2 3 9 S (6 4 6 , 0 5 7 ) $ (6 0 9 , 6 4 8 ) 42 43 Cu m u l a t i v e Re s i d e n t i a l De f e r r a l (R e b a t e ) / S u r c h a r g e £( ( 3 7 ) , (3 8 ) , (4 0 ) ) $ 10 3 , 9 6 8 $ (8 2 9 , 8 8 7 ) $ (6 0 9 , 6 4 8 ) ID Fi x e d Co s t Ad j u s t m e n t Re p o r t 01 2 0 2 1 / Na t u r a l Ga s De f e r r a l Pa g e 3 of 9 Av i s t a co r p o r a t i o n Fix e d Co s t Ad j u s t m e n t Me c h a n i s m id a h o Ju r i s d i c t i o n Qu a r t e r l y Re p o r t fo r 1s t Qu a r t e r 20 2 1 Av i s t a Ut i l i t i e s Na t u r a l Ga s Fi x e d Co s t Ad j u s t m e n t Me c h a n i s m (I d a h o ) De v e l o p m e n t of Na t u r a l Ga s De f e r r a l s (C a l e n d a r Ye a r 20 2 0 ) Wi t h Sc h 17 2 Ta x Re f o r m Ad j - Ra t e s Ef f e c t i v e 1/ 1 / 2 0 1 9 Se e No t e s ta b 1s t Qu a r t e r 15 Mo n t h s Li n e Re v i s e d Re v i s e d Re v i s e d 20 2 1 En d e d No . So u r c e Ja n - 2 1 Fe b - 2 1 Ma r - 2 1 To t a l 3/ 3 1 / 2 0 2 1 (a ) (b ) No n - R e s i d e n t i a l Gr o u p I To t a l Ac t u a l Bil l e d Cu s t o m e r s Re v e n u e Re p o r t s I, 5 5 8 1.5 5 8 1, 5 5 8 4, 6 7 4 23 , 1 3 2 2 To t a l A c t u a 1 U s a g e ( T h e r m s ) Re v e n u e R e p o r t s 3. 1 0 1 . 2 8 0 3, 3 3 0 , 7 1 6 2, 8 4 2 , \ 4 2 9,2 7 4 , 1 3 8 34 , 0 2 9 , 9 2 3 3 To t a l Ac t u a l Ba s e Ra t e Re v e n u e Re v e n u e Re p o r t s 5 84 1 , 7 9 0 $ 88 7 , 0 0 6 5 84 0 , 7 1 9 2,5 6 9 , 5 1 5 9, 7 6 8 , 7 7 9 4 To t a l Ac t u a l Fi x e d Ch a r g e Re v e n u e Re v e n u e Re p o r t s S 15 2 , 6 1 4 5 15 8 . 0 9 3 $ 18 6 , 7 0 7 49 7 , 4 1 4 2, 4 6 1 , 3 0 9 6 Ex i s t i n g Cu s t o m e r s 7 Ac t u a l Cu s t o m e r s on Sy s t e m Du r i n g Te s t Ye a r (1 ) - (2 2 ) 1, 5 0 4 1, 5 0 4 1,4 9 7 4, 5 0 5 22 , 3 5 8 8 Mo n t h l y Fix e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $4 4 4 . 1 8 $4 0 8 . 0 7 $3 5 2 . 1 9 $4 0 1 . 5 6 $3 0 9 . 6 9 9 Fix e d Co s t Ad j u s t m e n t Re v e n u e (7 ) x (8 ) $ 66 8 , 0 5 1 $ 61 3 , 7 4 1 $ 52 7 , 2 2 5 $ 1, 8 0 9 , 0 1 7 $ 6,9 2 3 , 9 6 0 ll Ac t u a l Ba s e Ra t e Re v e n u e (3 ) - (2 6 ) $ 81 1 , 1 0 4 $ 85 2 , 8 0 5 $ 80 6 , 2 8 9 $ 2, 4 7 0 , 1 9 8 $ 9,7 6 8 , 7 7 9 12 Ac t u a l Fi x e d Ch a r g e Re v e n u e (4 ) - (2 7 ) $ 14 6 , 8 5 9 $ 15 0 , 6 8 4 $ 17 8 , 4 7 5 $ 47 6 , 0 1 8 $ 2,0 5 7 , 4 2 7 13 Ac t u a l Us a g e (T h e r m s ) (2 ) - (2 8 ) 2,9 8 7 , 7 9 9 3,2 0 3 , 1 8 3 2, 7 1 7 , 4 7 1 8, 9 0 8 , 4 5 3 33 , 9 3 2 , 0 4 9 16 Cu s t o m e r Fix e d Co s t Ad j u s t m e n t Re v e n u e (1 1 ) - (1 2 ) -(1 5 ) $ 66 4 , 2 4 5 $ 70 2 , 1 2 1 $ 62 7 , 8 1 5 $ 1, 9 9 4 , 1 8 0 $ 7,0 0 1 , 4 6 2 17 No n - R e s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $4 4 1 . 6 5 $4 6 6 . 8 4 $4 1 9 . 3 8 $4 4 2 . 6 6 $3 1 3 . 1 5 18 Ex i s t i n g Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (9 ) - (1 6 ) $ 3, 8 0 6 $ (8 8 , 3 7 9 ) $ (1 0 0 , 5 9 0 ) $ (1 8 5 , 1 6 3 ) $ (7 7 , 5 0 3 ) 20 2 I Ne w Cu s t o m e r s 22 Ac t u a l Cu s t o m e r s Ne w Sin c e Te s t Ye a r Re v e n u e Re p o r t s 54 54 61 16 9 77 4 23 Mo n t h l y Fi x e d Co s t Ad j . Re v e n u e pe r Cu s t o m e r Pa g e 3 $3 8 5 . 2 8 $3 5 3 . 9 6 $3 0 5 . 4 8 $3 4 6 . 4 7 $2 6 8 . 1 2 24 Fi x e d Co s t Ad j u s t m e n t Re v e n u e (2 2 ) x (2 3 ) $ 20 , 8 0 5 $ 19 , 1 1 4 $ 18 , 6 3 4 $ 58 , 5 5 3 $ 20 7 , 5 2 2 26 Ac t u a l Ba s e Ra t e Re v e n u e Re v e n u e Re p o r t s $ 30 , 6 8 6 $ 34 , 2 0 1 $ 34 . 4 3 0 $ 99 , 3 1 7 $ 40 3 , 8 8 2 27 Ac t u a l Fix e d Ch a r g e Re v e n u e Re v e n u e Re p o r t s $ 5, 7 5 5 5 7, 4 0 8 5 8. 2 3 2 $ 21 , 3 9 5 $ 97 , 8 7 4 Ac t u a 1 U s a g e ( T h e r m s ) Re v e n u e R e p o r t s 11 3 . 4 8 2 12 7 , 5 3 2 12 4 , 6 7 1 $ 36 5 , 6 8 6 $ 1, 4 8 5 , 2 1 9 31 Fix e d Pr o d u c t i o n an d UG Sto r a g e Ra t e pe r Th e r m Pa g e 1 wt d av g $ 0. 0 2 7 8 1 $ 0. 0 2 7 8 1 $ 0. 0 2 7 8 1 $ 0.0 2 7 8 1 $ 0. 0 2 7 8 1 32 Fix e d Pr o d u c t i o n an d UG Sto r a g e Re v e n u e (3 0 ) x (3 1 ) $ 3, 1 5 6 $ 3, 5 4 7 $ 3,4 6 8 $ 10 , 1 7 1 $ 41 , 3 1 0 33 Cu s t o m e r Fi x e d Co s t Ad j u s t m e n t Re v e n u e (2 6 ) - (2 7 ) - (3 0 ) - (3 2 ) $ 21 , 7 7 5 $ 23 , 2 4 5 $ 22 , 7 3 0 $ 67 , 7 5 0 $ 26 4 , 6 9 8 34 No n - R e s i d e n t i a l Re v e n u e Pe r Cu s t o m e r Re c e i v e d $4 0 3 . 2 3 $4 3 0 . 4 7 $3 7 2 . 6 3 $4 0 0 . 8 9 $3 4 1 . 9 9 35 Ne w Cu s t o m e r De f e r r a l - Su r c h a r g e (R e b a t e ) (9 ) - (3 3 ) $ (9 7 0 ) S (4 , 1 3 2 ) $ (4 , 0 9 6 ) $ (9 , 1 9 7 ) $ (5 7 , 1 7 5 ) 37 To t a l No n - R e s i d e n t i a l De f e r r a l - Su r c h a r g e (R e b a t e ) (1 8 ) + (3 5 ) $ 2,8 3 7 $ (9 2 , 5 1 1 ) $ (1 0 4 , 6 8 6 ) $ (1 9 4 , 3 6 0 ) $ (1 3 4 , 6 7 8 ) 38 De f e r r a l - Re v e n u e Re l a t e d Ex p e n s e s Re v Co n v Fa c t o r $ (1 7 ) $ 54 0 $ 61 1 $ 1,1 3 5 $ 78 6 39 Cu s t o m e r De p o s i t Ra t e 1. 0 0 % l. 0 0 % 1. 0 0 % 40 In t e r e s t on De f e r r a l Av g Ba l a n c e Ca l c $ 49 $ 12 $ (7 0 ) $ (8 ) $ (1 , 6 9 7 ) 41 Mo n t h l y No n - R e s i d e n t i a l De f e r r a l To t a l s S 2,8 6 9 S (9 1 , 9 5 9 ) S (1 0 4 , 1 4 4 ) S (1 9 3 , 2 3 4 ) S (1 3 5 , 5 8 9 ) 42 43 Cu m u l a t i v e No n - R e s i d e n t i a l De f e r r a l (R e b a t e ) / S u r c h a r g e T( ( 3 7 ) , (3 8 ) , (4 0 ) ) $ 60 , 5 1 4 $ (3 1 , 4 4 5 ) $ (1 3 5 , 5 8 9 ) Re s li n e ( 4 3 ) +N o n - R e s 44 To t a l Cu m u l a t i v e De f e r r a l lin e (4 3 ) $ 16 4 , 4 8 2 $ (8 6 1 , 3 3 2 ) $ (7 4 5 , 2 3 7 ) ID Fi x e d Co s t Ad j u s t m e n t Re p o r t Q1 2 0 2 1 / Na t u r a l Ga s De f e r r a l Pa g e 4 of 9 Avista Corporation Fixed Cost Adjustment Mechanism Idaho Jurisdiction Quarterly Report for 1st Quarter 2021 Balance Sheet Accounts Note:Ending balances and monthly activity per the GL below will not agreeto deferral calculations due to a correcting entry booked inJurisdiction:ID FCA Deferred Revenue April 2021.See note on "Notes"tab for explanation of Q1 Revision Entry. Ferc Accounting BeginningAcctFercAcctDescServicePeriodBalance MonthlyActivity EndingBalance 186328 REG ASSET-DECOUPLING DEFERRED ED 202101 -1,013,474.55 1,889,121.33 875,646.78 REG ASSET-DECOUPLINGDEFERRED 202102 875,646.78 -888,930.07 -13,283.29 REG ASSET-DECOUPLING DEFERRED 202103 -13,283.29 510,967.26 497,683.97 1,511,158.52 REG ASSET-DECOUPLINGDEFERRED GD 202101 36,409.28 15,779.39 52,188.67 REG ASSET-DECOUPLING DEFERRED 202102 52,188.67 -946,956.17 -894,767.50 REG ASSET-DECOUPLINGDEFERRED 202103 -894,767.50 209,063.00 -685,704.50 -722,113.78 789,044.74 186338 REG ASSET NON-RES DECOUPLINGD ED 202101 2,301,014.62 -1,677,921.80 623,092.82 REG ASSET NON-RES DECOUPLINGD 202102 623,092.82 412,025.27 1,035,118.09 REG ASSET NON-RES DECOUPLINGD 202103 1,035,118.09 -253,476.26 781,641.83 -1,519,372.79 REG ASSET NON-RES DECOUPLINGD GD 202101 57,644.83 -55,707.18 1,937.65 REG ASSET NON-RES DECOUPLINGD 202102 1,937.65 92,745.26 94,682.91 REG ASSET NON-RES DECOUPLINGD 202103 94,682.91 -290,458.79 -195,775.88 -253,420.71 -1,772,793.50 Jurisdiction:ID Prior Year FCA Ferc Accounting Beginning Acet Ferc Acct Desc Service Period Balance Monthly Activity EndingBalance 182329 REG ASSET-DECOUPLINGPRIOR YE ED 202101 0.00 -1,014,319.11 -1,014,319.11 REG ASSET-DECOUPLINGPRIOR YE 202102 -1,014,319.11 -845.27 -1,015,164.38 REG ASSET-DECOUPLINGPRIOR YE 202103 -1,015,164.38 -845.97 -1,016,010.35 -1,016,010.35 REG ASSET-DECOUPLINGPRIOR YE GD 202101 0.00 36,439.62 36,439.62 REG ASSET-DECOUPLINGPRIOR YE 202102 36,439.62 30.37 36,469.99 REG ASSET-DECOUPLINGPRIOR YE 202103 36,469.99 30.39 36,500.38 36,500.38 -979,509.97 182339 REG ASSET -NON RES DECOUPLING ED 202101 0.00 2,302,932.13 2,302,932.13 REG ASSET -NON RES DECOUPLING 202102 2,302,932.13 1,919.11 2,304,851.24 REG ASSET -NON RES DECOUPLING 202103 2,304,851.24 1,920.71 2,306,771.95 2,306,771.95 REG ASSET -NON RES DECOUPLING GD 202101 0.00 57,692.87 57,692.87 REG ASSET -NON RES DECOUPLING 202102 57,692.87 48.08 57,740.95 REG ASSET -NON RES DECOUPLING 202103 57,740.95 48.12 57,789.07 57,789.07 2,364,561.02 ID Fixed Cost Adjustment Report Q12021/Accounting Balances Page 5 of 9 Avista Corporation Fixed Cost Adjustment Mechanism idaho Jurisdiction Quarterly Report for 1st Quarter 2021 Deferred Revenue Approved for Recovery Surcharge Ferc Accounting Beginning Acet Ferc Acct Desc Service Period Balance Monthly Activity Ending Balance 182328 REG ASSET-DECOUPLINGSURCHARG ED 202101 212,448.87 -36,076.89 176,371.98 REG ASSET-DECOUPLINGSURCHARG 202102 176,371.98 -33,971.17 142,400.81 REG ASSET-DECOUPLINGSURCHARG 202103 142,400.81 -30,632.96 111,767.85 -100,681.02 REG ASSET-DECOUPLINGSURCHARG GD 202101 0.00 0.00 0.00 REG ASSET-DECOUPLINGSURCHARG 202102 0.00 0.00 0.00 REG ASSET-DECOUPLINGSURCHARG 202103 0.00 0.00 0.00 0.00 -100,681.02 182338 REG ASSET -NON RES DECOUPLING ED 202101 107,029.75 -9,399.09 97,630.66 REG ASSET -NON RES DECOUPLING 202102 97,630.66 -9,603.90 88,026.76 REG ASSET -NON RES DECOUPLING 202103 88,026.76 -10,050.49 77,976.27 -29,053.48 REG ASSET -NON RES DECOUPLING GD 202101 0.00 0.00 0.00 REG ASSET -NON RES DECOUPLING 202102 0.00 0.00 0.00 REG ASSET -NON RES DECOUPLING 202103 0.00 0.00 0.00 0.00 -29,053.48 Rebate Fere Accounting Beginning Acet Ferc Acct Desc Service Period Balance Monthly Activity Ending Balance 254328 REG LIABILITY DECOUPLINGREBAT ED 202101 0.00 0.00 0.00 REG LIABILITY DECOUPLINGREBAT 202102 0.00 0.00 0.00 REG LIABILITY DECOUPLINGREBAT 202103 0.00 0.00 0.00 0.00 REG LIABILITY DECOUPLINGREBAT GD 202101 -362,631.12 81,356.19 -281,274.93 REG LIABILITY DECOUPLINGREBAT 202102 -281,274.93 84,421.62 -196,853.31 REG LIABILITY DECOUPLINGREBAT 202103 -196,853.31 55,547.39 -141,305.92 221,325.20 221,325.20 254338 REG LIABILITY NON RES DECOUPLI ED 202101 0.00 0.00 0.00 REG LIABILITY NON RES DECOUPLI 202102 0.00 0.00 0.00 REG LIABILITY NON RES DECOUPLI 202103 0.00 0.00 0.00 REG LIABILITY NON RES DECOUPLI GD 202101 -136,649.04 21,069.79 -115,579.25 REG LIABILITY NON RES DECOUPLI 202102 -115,579.25 22,661.39 -92,917.86 REG LIABILITY NON RES DECOUPLI 202103 -92,917.86 19,342.20 -73,575.66 63,073.38 63,073.38 ID Fixed Cost Adjustment Report Q1 2021/Accounting Balances Page 6 of 9 Avista Corporation Fixed Cost Adjustment Mechanism Idaho Jurisdiction Quarterly Report for 1st Quarter 2021 Jurisdiction:ID Accumulated Deferred income Tax Ferc Accounting BeginningAcctFercAcctDescServicePeriodBalance Monthly Activity Ending Balance 283328 ADFIT DECOUPLINGDEFERREDREV ED 202101 -337,473.92 -305,410.68 -642,884.60ADFITDECOUPLINGDEFERREDREV202102-642,884.60 109,075.26 -533,809.34ADFITDECOUPLINGDEFERREDREV202103-533,809.34 -45,755.28 -579,564.62 -242,090.70ADFITDECOUPLINGDEFERREDREVGD20210185,097.43 -32,892.44 52,204.99ADFITDECOUPLINGDEFERREDREV20210252,204.99 156,880.39 209,085.38ADFITDECOUPLINGDEFERREDREV202103209,085.38 1,349.82 210,435.20 125,337.77 -116,752.93 Income Statement Accounts Jurisdiction:ID DeferredRevenue Fere Accounting BeginningAcetFercAcctDescServicePeriodBalance Monthly Activity Ending Balance 456328 RESIDENTIALDECOUPLINGDEFERRE ED 202101 0.00 -875,282.08 -875,282.08RESIDENTIALDECOUPLINGDEFERRE202102-875,282.08 889,289.24 14,007.16RESIDENTIALDECOUPLINGDEFERRE20210314,007.16 -510,765.51 -496,758.35 -496,758.35 456338 NON-RES DECOUPLINGDEFERREDRE ED 202101 0.00 -622,833.31 -622,833.31NON-RES DECOUPLINGDEFERREDRE 202102 -622,833,31 -411,334.64 -1,034,167.95NON-RES DECOUPLINGDEFERREDRE 202103 -1,034,167.95 254,232.93 -779,935.02 -779,935.02 495328 RESIDENTIALDECOUPLINGDEFERRE GD 202101 0.00 -52,166.93 -52,166.93RESIDENTIALDECOUPLINGDEFERRE202102-52,166.93 946,605.24 894,438.31RESIDENTIALDECOUPLINGDEFERRE202103894,438.31 -209,721.26 684,717.05 684,717.05495338NON-RES DECOUPLINGDEFERREDRE GD 202101 0.00 -1,936.84 -1,936.84NON-RES DECOUPLINGDEFERREDRE 202102 -1,936.84 -92,782.30 -94,719.14NON-RES DECOUPLINGDEFERREDRE 202103 -94,719.14 290,339.40 195,620.26 195,620.26 Amort of Prior Period Deferred Revenue Fere Accounting Beginning Acct Ferc Acct Desc Service Period Balance Monthly Activity Ending Balance 456329 AMORTIZATION RES DECOUPLINGDE ED 202101 0.00 36,238.83 36,238.83AMORTIZATIONRESDECOUPLINGDE20210236,238.83 34,103.94 70,342.77AMORTIZATIONRESDECOUPLINGDE20210370,342.77 30,738.82 101,081.59 101,081.59 456339 AMORTIZATION NON-RES DECOUPLIN ED 202101 0.00 9,484.33 9,484.33 AMORTIZATION NON-RES DECOUPLIN 202102 9,484.33 9,681.23 19,165.56AMORTIZATIONNON-RES DECOUPLIN 202103 19,165.56 10,119.63 29,285.19 29,285.19495329AMORTIZATIONRESDECOUPLINGDEGD2021010.00 -81,624.37 -81,624.37AMORTIZATIONRESDECOUPLINGDE202102-81,624.37 -84,620.76 -166,245.13AMORTIZATIONRESDECOUPLINGDE202103-166,245.13 -55,688.23 -221,933.36 -221,933.36495339AMORTIZATIONNON-RES DECOUPLIN GD 202101 0.00 -21,174.84 -21,174.84 AMORTIZATION NON-RES DECOUPLIN 202102 -21,174.84 -22,748.23 -43,923.07AMORTIZATIONNON-RES DECOUPLIN 202103 -43,923.07 -19,411.54 -63,334.61 -63,334.61 ID Fixed cost Adjustment Report Q12021/Accounting Balances Page 7 of 9 Avista Corporation Fixed Cost Adjustment Mechanism Idaho Jurisdiction Quarterly Report for 1st Quarter 2021 Jurisdiction:ID InterestExpense/Income Ferc Accounting Beginning Acet Ferc Acct Desc Service Period Balance Monthly Activity Ending Balance 419328 INTERESTINCOME-DECOUPLING ED 202101 0.00 -2,788.90 -2,788.90 INTERESTINCOME-DECOUPLING 202102 -2,788.90 -3,179.01 -5,967.91 INTERESTINCOME-DECOUPLING 202103 -5,967.91 -3,054.13 -9,022.04 -9,022.04 INTERESTINCOME-DECOUPLING GD 202101 0.00 -100.93 -100.93 INTERESTINCOME-DECOUPLING 202102 -100.93 -78.45 -179.38 INTERESTINCOME-DECOUPLINGO 202103 -179.38 -78.51 -257.89 -257.89 -9,279.93 431328 INTERESTEXPENSE-DECOUPLING ED 202101 0.00 844.56 844.56 INTERESTEXPENSE-DECOUPLINGO 202102 844.56 845.27 1,689.83 INTERESTEXPENSE-DECOUPLINGO 202103 1,689.83 845.97 2,535.80 2,535.80 INTERESTEXPENSE-DECOUPLINGO GD 202101 0.00 373.23 373.23 INTERESTEXPENSE-DECOUPLING 202102 373.23 673.95 1,047.18 INTERESTEXPENSE-DECOUPLINGO 202103 1,047.18 987.83 2,035.01 2,035.01 4,570.81 Financial Reporting Contra Asset Accounts Jurisdiction:ID Fere Ferc Acct Desc Service Accounting Beginning Monthly Activity EndingBalanceAcctPeriodBalance 253311 CONTRA DECOUPLINGDEFERREDREV ED 202101 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERREDREV 202102 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERREDREV 202103 0.00 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERREDREV GD 202101 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERREDREV 202102 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERREDREV 202103 0.00 0.00 0.00 0.00 0.00 253312 CONTRA DECOUPLEDDEFERREDREVE ED 202101 0.00 0.00 0.00 CONTRA DECOUPLEDDEFERREDREVE 202102 0.00 0.00 0.00 CONTRA DECOUPLEDDEFERREDREVE 202103 0.00 0.00 0.00 0.00 CONTRA DECOUPLEDDEFERREDREVE GD 202101 0.00 0.00 0.00 CONTRA DECOUPLEDDEFERREDREVE 202102 0.00 0.00 0.00 CONTRA DECOUPLEDDEFERREDREVE 202103 0.00 0.00 0.00 0.00 0.00 456311 CONTRA DECOUPLINGDEFERRAL ED 202101 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERRAL 202102 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERRAL 202103 0.00 0.00 0.00 0.00 0.00 495311 CONTRA DECOUPLINGDEFERRAL GD 202101 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERRAL 202102 0.00 0.00 0.00 CONTRA DECOUPLINGDEFERRAL 202103 0.00 0.00 0.00 0.00 0.00 ID Fixed Cost Adjustment Report Q12021/Accounting Balances Page 8 of 9 Avista Corporation Fixed Cost Adjustment Mechanism idaho Jurisdiction Quarterly Report for 1stNOTESQuarter2021 1)The followingtable shows how the decoupled revenue per customer has tracked with use per customerforeachquarterof2021.The similarity of the percentage change indicates that the mechanism is working as intended. Summarized Quarterly and Year to Date Use per Customer and Fixed Cost Adjustment Revenue Per Customer.Change versus Authorized YTD wtd Q1 Q2 Q3 Q4 Average % Electric Residential Change in Use per Customer (122)(122)-3.7% Change in FCA Revenue per Customer -$4.92 -$4.92 -2.2% Deferral per Average Customer $4.92 $4.92 Electric Non-Residential Change in Use per Customer (777)(777)-6.8% Change in FCA Revenue per Customer -$28.72 -$28.72 -4.8% Deferral per Average Customer $28.72 $28.72 Natural Gas Residential Change in Use per Customer 19 19 6.1% Change in FCA Revenue per Customer $7.38 $7.38 5.2%Deferral per Average Customer -$7.38 -$7.38 Natural Gas Non-Residential Change in Use per Customer 208 208 3.6% Change in FCA Revenue per Customer $124.75 $124.75 10.4% Deferral per Average Customer -$124.75 -$124.75 2)The contra asset accounting shown on page 8 is for financial reporting purposes only.Generally AcceptedAccountingPrinciplesallowrevenuerecognitionfromalternativerevenueprogramsuptotheamount expected to be collected within 24 months following the end of the annual period in which they are recognized.Due to the 3%annual rate increase limitation a portion of a 2021 surcharge may not be fully recovered by 12/31/2023 and therefore would not be recognizable as income for financial reporting purposes in 2021.The income statement impact of any contra deferral entries will be eliminated for normalized Idaho results reporting. 3)Due to an added Company holiday in January 2021,not all meters scheduled to be read in January and February were completed resulting in an under statement of actual customers in those months.In March, meter reading had caught up with scheduled reads resulting in an overstatement of actual customers for the month.This issue was identified by the Company during the January close and after internal discussions,the Company used actual customers for December 2020 to calculate the January -March deferral entries due to historically low changes in customer counts during Q1.The difference between actual customers used in the Q1 deferral calculations recorded was compared to the actual at the end of March.The difference was spread evenly to the three months in the quarter and the deferral calculations were re-performed with the revised customer counts.The difference between the deferral amounts recorded and the deferral amounts with the revised actual customers for the quarter was booked with the April 2021 close.The net impact of the correcting entry,including interest,is summarized below: Electric Residential:Surcharge increased by $57,689 Electric Non-Residential:Surcharge decreased by $58,042 Natural Gas Residential:Rebate decreased by $39,556 Natural Gas Non-Residential:Rebate decreased by $2,398 ID Fixed Cost Adjustment Report Q12021/Notes Page 9 of 9