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HomeMy WebLinkAboutChester Lake Cost of Power Analysis 1983MET-C 006 4. ... .. Alaska Power Au t hority LIBRARY COPY Energy Progra m for Alaska House Bill9 Cost of Power Analysis Chester Lake Alaska Power Authority 334 West 5th Avenue Anchorage, Alaska 99501 October 1983 A laska P ower Autho · Nyc"ro I Wood I Coal I Solar I Wind I Oeot hermat I C onseruatton Chester Lake Hydroelectric Project is located on Annette Island, 20 miles southwest of Ketchikan. The project would furnish power to the community of Metlakatla, coming on 1 ine January 1986. At present, Metlakatla Is served by the Purple Lake Hydroelectric Project supplemented by diesel. Capacity: Construction Costs: Operations & Maintenance: 430/082 2.5 MW 13.75 million dollars (5.48 mill ion approved by REA .650 million previous state appropriation) .084 mill !on dollars (1986) Project Cost represents 2.91 percent of the Total System Cost. Capacity represents 3.25 percent of the System. Power Sales represent 3 percent of the System. 430/082 TOTAL SYSTEM PROJECT COST Swan Lake $95.50 .,.,... .20CJ6 Tyee Lake 124.60 mlllon 26 .. Solomon Gulch 53.00~ 11 .. Terror Lake 189.40 mlllon ~ Cheeter Lake 1~76 maw. 3 .. Total $476.25 mllon 100.. POWER SALES COMPARISON F.Y. 1990 BASE CASE Swan Lake 40.840WH 18" Tyee Lake 38.040WH 16" Solomon Gulch 41.000WH 18" Terror Lake 104.200WH -45" Oleeter Lake 7.000WH 31ft Total 231.08 OWH 1()(')t. (/) z • § 1 !i ' (/) ~ ~ 200 175 150 125 100 75 50 25 COST PER INSTALLED CAPACITY PROJECT COST MEGAWATT $189 Swanlake 20% 29% Tyee Lake 26CJb 26% Solomon Gulch 11% 16% Terror Lake 40% 26% Chester Lake 3% 3% 12MW ........ ........ ........ ........ ........ HHHH OLL~~~~~~~~~~~~~~~~~~-L~~··~ ... ~ .. ~·~ Tyee Terror Chester Lake Lake Lake 40 35 30 25 (/) 5 20 ~ w ::E 15 10 5 0 Chester Lake Stand Alone Wholesale Cost of Power (Total Rate Inclusive of Operations and Maintenance) Base Case 60% State Grant/40% Revenue Bond 60% Revenue Bond/40% State Grant 1986 11.56 ¢/kWh 1986 14.16 ¢/kWh 1990 11.89 1990 14.49 1995 12.75 1995 15.11 2001 14.26 2001 16.62 100% State Loan 60% State Loan/40% State Grant 1986 13.73 ¢/kWh 1986 10.83 ¢/kWh 1990 14.06 1990 11.16 1995 14.72 1995 12.08 2001 16.23 2001 13.59 50% State Loan/50% Revenue Bonds 100% Revenue Bonds 1986 16.50 ¢/kWh 1986 19.27 ¢/kWh 1990 16.83 1990 19.60 1995 17.40 1995 20.17 2001 18.75 2001 21.26 430/082 Chester Lake Stand Alone Cost of Power Least to greatest cost [¢/~] 1. 60 percent State Loan/40 percent State Grant 2. 100 percent State Loan 3. 40 percent Revenue Bonds/60 percent Grant 4. 60 percent Revenue Bond/40 percent State Grant 5. 50 percent State Loan/50 percent State Grant 6. 100 percent Revenue Bonds :: Assl.fl1)t ions: Revenue Bonds 9.5 percent 35 year tenn State Loan 5.0 percent 35 year tenn 430/082 22 20 18 % ~ :Ill: I a:: ..... 0.. - CHESTER LAKE HYDROELECTRIC PROJECT (STAND ALONE) COST OF POWER COMPARISON OA AJ~~~=~~ 14.4!) 14.26 -14 2l01 '86 '9o '95 Ml ·~ '9!; 2LOI YEARS LEGEND l ~ I =~~: ~:~~ ~~T f~~~4100%STATE LOAN ~ 40%REV BONOS lilllli.IGO% GRANT fS88H GO% REV BOND ~40%STATE GRANT ~50% STATE LOAN ~50% REV BONDS ~ 100% REV BOODS HB - 9 Slstem without Chester Lake ¢/kWh Swan Lake Lake Tlee Solaron Gulch Terror Lake 1986 13.11 16.24 10.20 12.79 1990 12.86 17.14 10.59 10.45 1995 10.28 19.09 12.18 9.84 2001 8.35 20.13 15.18 9.85 430/082 Chester Lake in H. B. 9 S~stem 60 percent State Loan/40 percent State Grant Swan Tyee Solaron Terror Chester Lake Lake Gulch Lake Lake 1986 13.06 16.20 10.19 12.77 11.44 1990 12.83 17.14 10.59 10.45 10.96 1995 10.29 19.14 12.19 9.86 11.45 2001 8.37 20.16 15.19 9.86 12.80 100 Percent State Loan Swan Tyee Solaron Terror Chester Lake Lake Gulch Lake Lake 1986 13.18 16.31 10.25 12.88 11.54 1990 12.93 17.24 10.65 10.53 11.04 1995 10.36 19.24 12.24 9.92 11.52 2001 8.42 20.26 15.24 9.92 12.87 40 Percent Revenue Bonds/60 Percent Grant Solaron Chester Swan T:tee Gulch Terror Lake 1986 13.09 16.23 10.20 12.79 11.37 1990 12.85 17.17 10.60 10.47 11.07 1995 10.30 19.17 12.20 9.87 12.61 2000 8.38 20.19 15.20 9.88 12.90 50 Percent State Loan/50 Percent Revenue Bond Swan Tyee Solaron Terror Chester Lake Lake Gulch Lake Lake 1986 13.28 16.41 10.31 12.97 11.76 1990 13.01 17.34 10.69 10.60 11.23 1995 10.43 17.35 12.29 9.98 11.71 2001 8.47 20.35 15.29 9.98 13.05 60 Percent Bonds/40 Percent Grant Swan Tyee Solaron Terror Chester Lake Lake Gulch Lake Lake 1986 13.19 16.32 10.25 12.89 11.70 1990 12.93 17.26 10.65 10.54 11.19 1995 10.37 19.26 12.25 9.93 11.67 2001 8.42 20.27 15.25 9.93 13.02 100 Percent Revenue Bonds Swan Tyee Solaron Terror Chester Lake Lake Gulch Lake Lake 1986 13.39 16.52 10.36 13.07 11.98 1990 13.10 17.43 10.74 10.67 11.43 1995 10.50 19.45 12.33 10.04 11.90 2001 8.52 20.44 15.33 10.03 13.24 430/082 0 0 Chester Lake Effect on the HB -9 System Total Rate (¢/kWh) (1986) There is minimal effect on Swan Lake, Lake Tyee, Solomon Gulch and Terror Lake when adding Chester Lake to the System under any of the financing scenarios considered. The Greatest effect on any one project Is under the Chester Lake 100 percent Revenue Bond financing scenario: Swan Lake Rate increases Lake Tyee Rate Increases Solomon Gulch Rate increases Terror Lake Rate increases 2.14 percent 1.72 percent 1.57 percent 2.19 percent 430/082 :z: ~ :.c B:: LIJ Q. "" I ~:, .J ~ 22..1 I 2~: .. J i l ... ; I i f . CHESTER LAKE HYDROELECTRIC PROJECT {IN HB9 SYSTEM) COST OF POWER COMPARISONS 11.70 1001 ... 'to 'to 1001 ·ee '10 'IllS 1001 ·• ·eo ~ ' YEARS ~ BASE CASE LEGEN 0 60% STATE LOI ··• 40% STATE GA lf~1100%STATE ~ 11 40%REV BONl 60%GAANT ~60%REV BONI ~40%STATE ~ JSeo%STATE ~ ~!50%STATE GR . ~IOO%REV IJ)tt, H .. 8 .. 9 ANALYSIS CHESTER LAKE -60% STATE GRANT, 40% REVENUE BONDS 25 20 -TYEE LAKE ,_.,..... ,_,....... ,..,.,.--_......- """"' ~ ,_.. ,.._ 15 :r 3:. ~ " ..... " ~ 0 10 ---.. ~ ...... ~ -...... -~ ~ - CHESTER LAKE -SWAN LAKE 5 0 86 87 88 89 90 91 92 93 94 96 98 'R 98 99 20 F1SCAL YEAR H. B. 9 ANALYSIS CHESTER LAKE-100% REVENUE BONDS (10%-35 YEARS) 25 -~ 20 TYEE LAKE ~ 15 :::t ;:. ; ~ a: ..... ~ 0 10 ~ -...... ~ ---r---... """01; ~ ~ ~ CHESTER LAKE -SWAN LAKE 5 0 86 f$1 88 89 90 91 92 93 94 96 96 97 98 99 20 FISCAL YEAR ::r: 3=. ~ ..... m 25 20 ~15 (.) 10 5 0 H. B. 9 ANALYSIS CHESTER LAKE-50% STATE LOAN, 50% REVENUE BONDS TYEE LAKE ~ IP-" ~ t,......-- ~ -[,...--" --.... ~ ......,...,.b ~ b..... CHESTER LAKE -r--:......_ ....... SWAN LAKE 86 fR 88 89 90 91 92 93 94 se; 98 97 98 99 20 FISCAL YEAR :I: 3:. ~ ~. ..... i 0 H. B. 9 ANALYSIS CHESTER LAKE - 1 00% STATE LOAN (5% -35 YEARS) 25 ..... --""""" ""- l,.....--' -20 TYEE LAKE ~ ~ __.,._,. ~ -r- 15 ......... ~ --r-..... p..._ CHESTER LAKE 10 .......... ~ Do.. .-..., p....._ ......_ SWAN LAKE 5 0 86 ff1 88 89 90 91 92 93 94 9G 98 97 98 99 20 FISCAL YEAR Base Case Purple Lake & Diesel Estimated Distribution Wholesale Rate and Administration Reta i 1 Rate 1983 4.6 ¢/kWh 3.2 ¢/kWh 7.8 ¢/kWh 1986 7.1 3.9 11.0 1990 10.1 5.7 15.8 1995 17.9 7.8 25.7 2001 30.0 10.7 40.7 430/082 Chester Lake/Purple Lake Melrled Rate 60 Percent State Loan/40 Percent State Grant SALiii!S Purple Chester Total Energy Lake Debt Lake Debt -Debt Demand Sales Service 0 lio M Sales Service 0 & M Service F.Y. HUH MUH MWH ($Mill.) 1986 17,320 10,32.0 $85,000 $182,000 7,000 s''""·ooo ~ 81,200 /i<.Rf9,ooo 1990 17,570 lO,S"'o 85 ,ooo . 239,000 7,000 G,to\PQO 104,300 ~'!JC),I'lOO 1995 Ul, 320 "·340 85,000 335,000 7,000 "'"•ceo 144,200 ~.t:JCJO 2001 19,060 ,~,<:K.O 85,000 503,000 7,000 ,,~.aao 21J,500 ~c:n.OQ) Total 0 & M ~2(,3.too 3~?..~00 "',,,2.00 'llC..SOO MeldPil Rate !Estimate oist. & Total Purple ~e£l~1 Admin. Retail Lake lake Costs Rate ( t/Mih I «tlkUh) .s.~ s.~ "·"' 7."\ - 3.9 9.5' 5.7 , ..• 7.0 1~.'1. ' 10.7 &e.., I Table2 p.2/M0035 Revised 10/14/83 J Chester J.ake/Purple f.ake Melded Rate 60 Percent State Grant/40 Percent Revenue Bonds :-- SAL-.s Purple Chester Total Total Enerqy Lake Debt Lake Oebt . Debt Demand Sales ServicP. 0 l. M Sales Service 0 & M Service F.Y. Mtm MtlH M\iH 19116 17,320 ,O,JZO $85,000 $102,000 7,000 1-&ss,ooo $ 81,200 ~'940 ,Ot» 1990 17,570 \OaSlo 05,000 239,000 7,000 SSS\000 104,300 .10.000 1995 18,320 l\,~'10 85,000 335,000 7,000 ass.~~o-. 144,200 9Cla.ooo 2001 19,060 ' ll.,OC.O 85,000 503,000 7,000 &s.spoo 2ll,500 9~0o0 -------- Total 0 & M S263,200 343,300 479,200 716,500 Melded Rate !Estimate Oist. & Tot a Purple Chester Admin, Ret a 1 Lake Lake ~.~ 7.1 7.8 8.:1 Costs Rate ( tlktlh) Ct/k' h) -3.9 \C. 8 5.7 ,~. 7.8 lS. lit 10.7 &C),• - Tah1el p.l/HOOJS Revised 10/14/03 . ~AI.£~ Purple Chester Enerqy Lake Debt Lake Demand Sales Service 0 & H Sales F.Y. M~lH M\"111 ""'" 19R6 17,320 \Oa31.0 $85,000 $182,000 7,000 1990 17,570 iOaS'lO R5,ooo 234,000 7,000 1995 18,120 H,'1."10 85,000 335,000 7,000 2001 19,060 \'1.,04.0 85,000 503,000 7,000 Chester Lake/Purple Lake Melde~ Rate 100 Percent Revenue Bonds Total Debt Debt Service 0 & H Service Sl,,1.S,ooo $ 81,200 Jt,l.lo,oao h\1.8,000 104,300 ,1, 1..10 ,ooo \,\'Z.S,e>OO 144,200 ~. '1.\0,000 \I\ "l.S,OOO. 213,500 ,,'1.\0,0CO . Toti!il 0 & H $263,200 343,300 479,200 716,500 Melclecl Rate Estimate Dist. & Total PurpUt a~:n.er Retail Lake Lake Costs Rate ( t/ktlh) (t/kUh) e.s 3.9 \'l ... e.e 5.7 ... .s 9.2. 7.8 n.o l 0 •• 10.7 2.0.& Revised 10/14/83Table3 p.3/M0035 It) N 0 N HM>I/~ 4ri ~~~uwwwww~uw~ 0 0 en a: c w > _, c (.) en &I. :z: • :.&: ....... <:1\, 30 25 20 15 10 5 ;:;:;:;:;:;:: ll!lll!lllll! ·.· .. ····•··· ········'"•'"• :I lltfl~ 0 I ' • . I " ' I E=l .~ii~iiiit, ...... 198 6 CHESTER LAKE/PURPLE LAKE MELDED RATE 60°/o GRANT /40°/o REVENUE BONDS l"3.0 I ~I ·'3 , ..•. •.•.•,•, ' ····~······· 1990 FISCAL YEARS \Sk ::m:m~~~: 1.8 I 1995 .,.4 8.1 2 00 I LEGEND ~COMBtNm WHOLESALE MELDED RATE a COMBINED . RETAIL RATE 30 2S 20 % l ~ IS v 10 '~ s xtlF:Sc • =·' 1.. ~;.c I .J::Ja.! aD! !D.IId . ..I.I.L- I 00 % REVENUE BONDS ll.."t s.a 14\.S ·;·;·;•;• .. : II :ii11l1~lil~ II :1~~~~1~jjj~ !~~~j~j~j~~f ,·.·········· i1~~ili1jli1~ ~ .......... . 'f.~ n.o r~;:;:;:;:;:; ............ I I·········· ·:·:···:·: ~l~l~1jll: 'il~~!il~~~~j' 0 I t • • ,., • I ,I t;==j I :·:·:·:·:•:;1 . u .... • • I !==-;t t=::;:;:;:;:, ' , t t ' t E72 ............. t • • • 1\J 8 6 1990 19\J!S FISCAL YEARS ":':""·~-:--· to., 2001 LEGEND ~COMBINED WHOLESALE MELDED RATE mm ~ COMBINED RETAIL RATE