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SusJtna Joint Venture Document Number

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Please Return To DOCUMENT CONTROL

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Meeting on BPJffiLEY LAKE PROJECT

ENERGY GENERATION

May 9, 1985

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A.lENDA

BRADLEY LAKE PROJECT ENERGY GENERATION

ALASKA POWER AUTliORITY

Meeting held at the offices of Stone & Webster Engineering Corp.

I. INTRODUCTION

Anchorage, Alaslc.a

May 9, 1985

II. CHUGAC'n KtEC'ri.IC ASS09IATION EN:D'~GY REQUIREMEN'rS

AND PLANt OPERAXIONS

III. BRADLEY LAXE PROJECT

o Reservoir Optindzation

o Generating Capabilities

I\T. G~EBATION SIMUI.ATIONS

o Chugach Load Requirements

o O~eration Sfmulations

o Generating Limitations

Participants

Thomas S. Martin, Chug'",e.h Electric Association,

B. Kent Wick, Bomer Electric Association, Inc.

David R. Eberle, Alaska Power Authority

John Long•cre, Alaska Power Authority

, , Inc. ·

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James J. Garrity, Stone & Webster Engineering Corporat1on

Ted Cr~tikos, Stone & Webster Engineering Corporation

Pedro J. Restrepo, Stone & Webster Engineering Corporation

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GENERATING CAPABILITY

BRADLEY LAKE HYDROELECTRIC PROJECT

CHUGACH ELECTRIC ASSOCIATION • INC.

MONTHLY ENERGY REQUIREMENTS

ALASKA POWEB. AUTHORITY

Stone & Webster Engineering Corporation An~horage. Alaska

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AI,ASKA POWER AUTHORITY

:-a 134 WEST 5th AVENUE· ANCHORAGE, ALASKA 99501 ~= (907) 2T7-7641 (907) 21s-oocn

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· April 12. 1985

Mr. Robert Martin Genera1 Manager Chugach Electric Association, Inc. P. 0. Box 3518 Anchorage, Alaska 99501

ENERGY PRODUCTION • BRADLEY LAKE HYDROELECTRIC PROJECT

Dear Hr. M\trt! -

This fs fn r·esponse to your March 25, 1985 letter requesting that the Power Authority rev·iew the Bradley Lake Project flow regime utilizing a· probable distribution of monthly generation for an assuP.ed·average annual availability of 369,000 MWH/Yr. Using your·probabl~ distribution of monthly.generation as a targeted distribution, and maintaining 7,000 MWH each for June, July, and August shows that the Project annua·l energy production would be reduced by some 13 .. percent to approximately 320,000 M'IIH/Yr. This is due to reservoir storage limitation. Please note that th~ attachmen~·to your March 25 letter has a total for annual distribution of 389,000 fiiH/Yr •.• rather than 369,000 MWH/Yr. . •

As indicated by m.y April 1. 1985 letter regarding power sales negotiations on the Susitna and Bradley Lake Hydroelectric Projects. studies to date on the Bradley Lake Project have assumed that the Project will be operated with a ii'Ore or les·s cbnstant monthly generation~ To generate power from the Project • during the summer months only for the purpose of supplying reserves ~nd during the winter months at an 80 percent capacity factor will hav~ an adverse impact on the total annual production of the Bradley lake Project • .

(J We would be glad to meet with you to discuss this matter.

Sincerely,

. RDH/amh

t:c: K. Wick, Homer Electric Association T. Stahr, Municipal Light & Power J. Palin, Matanuska Electric Association

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9089/366

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!5€.'01 MINNESOTA DRiVE • POUCH 6300 • ANCHORAGE. ALISt<A 99502-()300 • PHONE l\J07·!563·7494 I . ~It: OtUGAOt AHG

March 25, 1985

f-Ir. Robert Heath Interim Executive Director Alaska Power Authority 334 t-1 S·th Ave Anchorage, Alaska 99501

Dear Bob:

coeoJzsaes

~§@~fl~§fD) MAR 2 81985

, ~-·-.,_ .. ....... --- -· -·- ...... ,. . During the negotiating process for the Bradley La·ke Power Sales ·

.Agreements, we have.been assuming, based on·discussions with your staff, that there would be no signifi~~nt restrictions on the distribution of power generation aver ~he year.

More specifically, we infor.mea your staff that i~ ·would likely be the utilities' intention to generate power from·the Project during the summer months only f.or the purpose of supplying reserves. During the winter months we anticipate operating the Project at a 80 percent capacity factor. Por your information I have attached a table showing a probabl~ distribution of generation by month for an assumed average annual energy availability of 369.000-MWB.

Please have your staff review the flow.regime associated with this distribution aad let us know if it is feasible. We would

.appreciate your r~sponse by April 12, 1985. ·

If any questions arise, please ·contact Mr. Tom Martin of my staff at 564-0740.

Sincerely,

Robert Martin, Jr. • .--­Gen_eral ·Manager

RM/TSM/as

Attachment

·cc: I<! Wick, B£A 'r. Stahr, MLH' J .. Palin, HE&

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BRADLEY LAKE PROJECT

Assumed Monthly Generation

369,000 MWH/YR· @ 90MW

January 53,000

Febr.uary 50,000

March 40,000

April 35,~00

May ~ "0# ~)

June ·7 ,ooo .

July 7,000 • • -

·Augus.t 7 ,.000

-September 12,000" . .

Oc-tober lS·,OOtJ .. '•.

Noveniber ··so ,ooo December S3 1 0GO . \-..:,

Total · ·@,oou '3 ~-q,~~

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~ ·o:- . ~ WEST 5th AVENUE· ANCHORAGE, ALAS~' SKI50t t fj . .

Phone: (907) 277·7841 . (QQ7) 27'&0001

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April 1, 1985

Susitna File Code No. 1.8.2/40.6.9/40.14~2

Mr. Thomas Stahr . Genera 1 Manager · Anchorage Municipal Light

& Power 1200 East First Avenue Anchorage, Alaska 99501

Subject: Susitn& Hydroelectric hQ.lect: Power Sa 1 es Negoti at1ans Bradley Lake Project Operation

· Deat'" Mr. Stahr:

Studies to date have assumed that ~~e Bradley lake Hydroelectric Project will be oper.ated wiUI a more or·less . .canstant, r;nonthly, · energy generation (see Attadaaent No. 1 & 2-). In our Fjower Sales Negotiations meeting on Februar:y 28, 1985, there were. some · questions raised as to whether or ~ut ~e_project will actually be operated in that maMer.

To get a better understandin9 of the issues involved, we plan to perform a computer simulation of reservoir operations based, ini- ·

· tially, on the proposed monthlY uti1ization by each utility and on historical stream,Flow data. J-f.-we observe any conflicts in the proposed ut11ization, we will ~rform additional computer runs, a~ necessary, to show how the proposed uti1 ization by one or more utilities will impact the ener.gy available to the other utilities. It is anticipated that the data devel_oped in ~is manner will be the subject of·future negotiations for Susitna Power Sales Agreements.

Before we begin the computer simlat1ons, we will need some addi­tional infonmation fromyau.· ~cifically, we need to know what percent of your annual energy a11ocation you propose to take each month of the year assuming that there 1s an adequate transmission system between Anchorage and tbe Kenai peninsula (see Attac~1ment No. 3 for estimated a11ocations)e Please contact our Deputy ,

8782/365/Fl

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. -·Project Manager. John Stafford, if you have any questions r2garding Uris request..

Sincerely~

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~_. ~s ·a. Dischinger Susitna Project Manager

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cc: Dave Eberle, APA, Anchorage William Larson, Harza-Ebasco, Anchorage

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Feb.

Mar.

Apr.

May

June

July

Aug.

Sept.

Oct.

Dec.

Total

Eklutna . (30 MQ).

14

12

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10

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14 ·-154

ATTACHMENT NO. 1

SUSITNA POWER SALES NEGOTIAllONS

HOURLY AND PONDAGE MODIFIERS . (GWh)

Cooper· Lake (16 Mw)

Bradl~b Lake(l) (9 MW)

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'292

'228

217

238

248

269

277

284

320

3·60

3440

(l) A~justed to a total of 334 GWh of f1nm energy from a previously shown total of 347 GWh. Reference FERC license application for the Bradley Lake project.

8907/363

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AML&P CEA

· HEA MEA SES FMUS GVEA

ATTACHMENT NO. 3

Estimated Annual Allocation of Bradley Lake Hydrael~~tric Project

1985(l) Energy

Requirements (GWH)

1017 ·1082

411 459 40

150 447

3606

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Bradley Allocation Peak . Ene'::: (HW) (GW!!}_

25.4 94.2 27.0 100.2 10.3 38.1 11.5' 42.5

1.0 3.7 3 .. 7 13.9

11.1 41.4

90.0 3.34.0('2)

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(t) The COnditional Power Sales Agreements being negotiated for the.sale of Brad1ey Lake Power state that~the Project wi11 be allocated to each P~-trdlaser based on its 1985 energy sa ies. The 1985 energy requirements were taken from the data provided b~ the uti11ties to Harza-Ebasco.

(21 Annual Fi~ Ener-gy

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General Maaagr Anchorage Huatdpal Ugbt

I Powr · · 1200 ·East· Ft rst -~ ..... An~rage. Alasb :19501

Mr. lent tltct : Genera 1 Hanager Ha.er Electnc bsod•t1on P. D. Bax CZ9 Ha.er. A1aska ·~

Hr. Paul Dfa~er Ct t;y of Sewanl

· P. O. Box 167 Seward, Alaska ·:S9&51 •

Mr. '1ftdlae1 P.: We""11y Al•sta Envtro,..ta11nfol'lllt1on

I Data Center 707 •~t• Street _AnChorage. Alaska .:.19501

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BAi'IGE .:.CCESS CHANNEL

1. WASTE MATERIAl. WILL P~ USED lO CONSffiVCT ~1-5, .A!RS'oRlP. SrAGIN('; AFlEA.,SWITQIYAOi) ARE; A, At.O OTHER PROJECT F'.AOLI;':S AS AP!'!lOPRIATE,

Z. ELE\'·~TIONS SHC;Wl ARE BASED C·N PPOJ::CT DATU,... MEAN SEA. L£\IE'. ;;;.rUM • PP.OJECT OA1\JM PLUS 4 C:! FT.

.,:;xxt 0 '1000' 200(1 lood 40Cd -:=;-:""~--· I SCAL.E. ,,.. "t.'-'

BRADLEY LAKE NORMAL MAX.W.S..El-1180'--"

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ADJUSTED FOR NUKA SWITCH AND GLACIER BALANCE CHANGES

DRAINAGE AREA = 66.1 SQUARE MILES

MONTHLY AND ANNUAL MEAN DISCHARGE, IN CUBIC FEET PER SECOND

lear Oct. NQy Deo Jan m !!!!: . .!Rf' Hay !1m. .i!!. A us Se-R • Annual - - - - -1953 775 577 111 19 112 .. ]2 711 389 1,.1130 1,117U 1,750 1175 601i 1959 275 102 60 33 25 22 33 ' ]08 1,070 1,080 1,070 1136 379 1960 187 9Jf 60 39 35 2~ 33 593. 990 1,320 1,230 651 ll!l 1961 2Jf9 llfJf 179 199 107 112 30 1136 1,160 1,650 1,11110 1,11110 591 1962 3117 116 71 55 31 22 39 177 937 1,220 1,000 5111 382 1963 269 317 127 111 87 67 115 237 560 1,120 1,090 91111 1117 19611 562 9t lOS 75 63 110 33 87 769 1,1110 1,510 1,090 U8 1965 1177 1110 8~ 611 50 55 75 131 62.5 1,100 1,180 1,710 1175 1966 595

. 165 10 39 32 31 II! .. 150 596 660 1,690 1,1180 116;

1951 525 611 113 35 31 29 36 253 820 1,110 1,1130 1w~30 510 1968 231 2211 136 99 91 105 62 307 585 929 1,060 1116 358

, 1969 211 73 Ill 35 35 311 113 310 1,080 820 1166 308 c~J 1970 1,900 211 Z39 118 116 109 103 331 771 1,170 1,250 660 588 1971 . 197 382 76 115 36 31 • 31 115 862 1,750 1,670 110 IS95 1972 376 lC~ 55 32 20 17 17 1111 11811 1,120 1,320 987 391 1973 1113 123 ~6 . 311 26 211 28 128 760 1,150 1,090 . 1,030 . 1101 197=1 575 173 50 32 23 19 23 227 309 530 652 1,250 3211

. 1975 ]JP6 22~ 112 55 113 311 30 355 1,280 1,1150 1,250 1,099 . 523 1976 11211 118 52 39 3~ 26 Ill 206 111 1,050 1,100 1,260 . 1128 1977 1120 IIlii 3i2 ]26 306 11e 119 3511 1,350 2,100 2,550 927 . 7811 1978 1107 10 37 311 11!0 I92 56 291 670 966 1,050 889 382 1979 572 161 lOll '3 30 27 31 290 139 1,050 1,930 1,390 533 1980 1,170 1111 85. 67 81 7- 58 ]26 936 1,332 1,30- 197 5611 . 1981 119 150 110 233 160 170 310 788 908 1,1190 1,"3 885 6110 . 1982 298' 251 ge· 52 73 115' 37 138 ~17 1,107 90ii 1,780 -56

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~r__ __ ._ ____ L._ __ ~----~--~~--·~--------_.----~--~*---~-----JAN FEB MAR APR MAY . JUN JUL AUG SEP OCT NOV DEC

TIME· MONTHS

RECOMMENDED INSTREAM FLOWS

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:n 'J . : I ESTIMATED AVERAGE MONTHLY FLOW

D LOWER BRADLEY RIVER

:n : i ., Year Oct Nov Dec Jan r·eb Mar Apr _May Jun Jul _Aug Sep . I ': - - - - - - - -1n 1958 125 190 40 36 23 28 65 113 182 103 63 53

1959 51 50 24 32 23 19 29 110 177 99 52 50 1960 52 51 29 36 25 20 28 115 186 104 sa 63

ID 1961 52 42 41 75 37 22 44 1l2 181 104 ~9 99 1962 55 53 27 34 24 22 39 ll5 185 99 55 38 l9G3 49 55 25 44 61 90 30 104 167 102 47 54 1964 61 20 24 38 ,29 16 13 149 240 115 61 50

JD 1965 60 71 27 23 15 29 40 llS 186 120 54 88 1966 . 59 23 13 27 26 18 24 125 202 113 74 94 1967 75 57 34 35 21 13 16 107 172 102 56 69

n 1968 48 123 48 45' 32 18 38 105 169 94 41 33 . I '·, 1969 42 27 15 24 17 13 16 87 141 91 38 30 1970 270 58 46 49 45 52 43 94"' 152 98 46 47

~fi 1971 ~~ 76 22 29 21· 16 l6 ll2 180 104 67 48 1972 50 33 29 39. 27 18 17 71 114 87 34 sa 1973 64 32 18 13 11 10 16 .. 66 148 92 35 43

tn 1974 41 30 22 17 13 12 2l 97 135 53 22 52 ·~

1975 66 59 29 16 13 11 11·· 80 2l3 139 40 66 1976 80 30 20 15 13 11 22 87 184 106 35 117 1977 105 100 74 107 80 41 33 114 202 144 97 36

JD 1978 107 32 14 14 15 l2 15 99 180 82 34 41 1979 133 56 52 28 18 13 27 96 151 82 69 39 1980 156 175 52 23 36 24 29 127 215 131 104 76

JD 1981 134 45 28 112 61 52 42 205 160 120 61 45 1982 58 J.i ...3§. ..li 29 20 18 --2.2. 139 77 29 ..2.2. ~ - - - - -

n Average 82 62 32 37 29 24 28 107 174 102 53 60

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IJ • Unregulated ar~ea below Bradley Lake c:iam:tsite and Middle Fork Diversion •

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··~tJ· NET AVAILABLE STREAMFLOW FOR • j ••

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•• POWER GENERATION AND RESERVOIR REGULATION

~o BRADLEY RIVER AT BRADLEY LAKE OUTLET ' ..

··~a ADJUSTED FOR NUKA GLACIER SWITCH AND GALC!ER MASS BALANCES

10 Jj'i

lJ' WATER

IU YEAR OCT NOV DEC JAN FEB MAR APR MAY JUH JUL AUG SEP - - - - - - - - - - - -1957 834 571 111 79 30 211 74 403 1556 1684 1901 500 1958 309 '102 52 29 12 II 11 322 1163 1192 1149 454

ID 1959 210 94 ·51 39 2'1 6 '10 614 1080 1472 1325 689 1960 280 144 179 199 107 29 23 1151 12'15 1854 1556 1547 1961 382 116 66 55 20 6 Z'T 187 1022 1340 1065 557

~--· 1962 302 317 118 113 87 67 24 248 638 13.147 1200 1070 1963 ~ 604 83 104 75 60 21 -s . 92 853 1300· 1647 1203 1964 525 140 82 54 31 JIS 6Ji. r:~8 ·· ·691 1250 1300 1859 .~

( ! 1965 640 158 51 30 23 13 14 158 683 809 1902 1635 1966 578 64 112 34 17 5 1 264 911 1271 1558 1877

iJ 1967 258 2211 136 99 90 90 49 321 659 1071 1175 4~8 . \ ~ 1968 304 67 21 23 16 11 8 311 1231 1042 . 531 339

1969 2043 211 239 118 116 109 95 337 861 1340 1386 710 1970 219 382 67 39 22 11 ..Jf ·~· 926 1959 1807 736

IP ·-.

1971 414 108 51 32 10 -3 -17 120 536 1259 1440 1092 1972 454 122 "1 11 1 -II -1 101 820 ·• 1243 1134 110'l 1973 609 173 38 13 -1 -7 -1 234 364 578 699 1355

' },' 1974 389 224 107 • 31 21 9 -10 347 1373 1567 1298 1183

fJ. 1975 466 118 39 18 10 -1 12 202 858 1172 1179 1370 1976 462 414 312 326 306 178 101 366 144Q 2348 ZT12 956 1977 448 69 16 12 20 19 20 304 746 1067 114Jf 970

.a. 1978 615 161 104 36 13 3 7 299 810 1142 2106 1469 1979 1268 411 85 55 81 ' 62 36 340 ·1021 15-40 1-84 1012 1980 830 150 103 233 160 170 301 812 1000 1701 1787 943 1981 336 251 98 38 71 30 4 105 744 1228 946 1916

aJ. fl. f '

.!

~ ~-, L. ~

t; ' ~--

-~

' MIDDLE FORK FLOWS AT DIVERSION DAM

·n (Based on ratios developed for Bradley River Flows 1-: adjusted for Nuka Glacier S~itching•) J .

~ Year Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

r - - - - - - - -'· 1958 64 6 6 4 4 14 126 188 47 59 5 2l4

r 1959 34 10 8 4 4 2 4 14 93 113 127 43 1960 23 9 8 4 4 2 4 2l 90 152 137 60 1961 3l 9 ·9 15 9 5 4 15 85 204 157 107 1962 35 12 a 6 5 2 4 10 85 l2l 110 53

~ 1963 34 35 6 8 7 5 4 11 78 227 163 147

'1964 42 9 l2 6 s 5 4 5 84 160 176 138 1965 48 8 10 7 6 4 4. 7 66 150 166 149

·~ 1966 45 10 8 4 5 4 4 8 87 149 238 155 1967 53 6 5 4 5 3 4 ll 91 161 172 153 1968 29 25 7 1 7 7 4 14 74 148 174 54 :f 1969 35 7 5 4 4 4 4 14·· 151 231 :133 76 1970 143 13 12 9 9 8 4 l.2 ·90 172 190 78 1971· 25 ·42 9 5 5 4 4 6 64 209 170 53

f 1972 '38 ll 7 4 3 2 4 8 52 152 186 122

.· 1973 41 1 7 4 4 2 4 7 60 101 109 109 .

1974 43 10 6 4 3 2 4 10 55 95 125 l28

~u· 1975 43 25 6 6 5 4 4 l2 93 ll7 108 102 1976 42 12 7 4 5 2 4 9 81 l22 144 110 1971 42 46 16 24 24 l2 4 12 90 248 225 68

I 1978 4l 1 5 4 5 5 4 13 76 119 160 llS

E. 1979 43 lO l2 5 5 3 4 13 71 110 207 115 f I 1980•• 98 35 9 5 5 4 4 14. as 208 180 115

1981•• 51 8 5 17 9 7 4 24 92 2ll 183 88 !

t• 1982•• ..J! .Jl .JJ. 7 _,i 5 4 8 67 144 113 ll§. l .! .: - - - - - - I

I

I Average 46 19 8 7 6 4 4 12 83 162 162 101 I.

c· D·· I . l .

1 l I > I

I n: ! ... Nuka Glacier Basin switching assumed to occur after 1970~

I J

l

l I •• Recorded monthlY averages. I

l fl· I

!•

r!· j

l

'D·- 1

1." 1~ I •.

' l . n· i.

l ! -I

&o

0 70

~ 10 ::: 3: ~ 50

>-0 a: ol(l

IJJ z w 30 ,L,

::tl = usa IDDD

a: 1HIO

0 > 11110 c::_ m • wt;: w- n.to a:z -:ro ;: ;:: 1120 o< ~~ .u.. _.J 1100 ow 0 2 1.1.1

1080

'ITp'trmr 11158

:1000

t- 21100 z-<a) _.J u. n. 2 ::ooo .. w :::: c 11100 oa: ..J~ ~ u 1000 -,, t- ·-.wO

liDO .:z:

• M!,WUAl (Nt'ROy -.~

'all

AVER ACE na..z TO ,,.... as..t IECOI!OARY 311.1

LLL ~ ,__ '-- .___

'all

'1110

40

30

'""I' 'I" .... m&liilliijl.liioiJI&Ijolliiilliiiliilli•lilli('Jii,tlliil)i

18al 1DD4 1U5 IDIUI 18117 IDDB IDii 11170 ID71 IV7~ 1173 un '~liiilliiilljiiliiliililjiiillillliijililliiit.ljilll.liiiiiJiffinnf- 20

1a1s rwre 1an 1111 1111 tHO 11181 t8U IUD 111111 jga:z

TIME STEP (MONTHS)

ENERGY GENERATION

lltiilliiii(iliiiiOUifllllllliiii(HilliHUilllllllilllljllihlliiJI(HI•Oilth!l•ihiiiJII(IJI!illiiiJjiloiliiiiu{iiliiliiiiJfihii.ili(ljilhJiiiiiijhiliiiiilijoiJI!II

' ,Jiljlilli!IIJilf'liliiHIII(' .. iiilil

1850 18111 1DII2 11103 1Dit nes lillll 111117 1111111 Iiiii 11170 li71 liT:Z 1117::1 111U

UNREGULATED FLOW

--- REGUI.J.TED FLOW

TIME STEP (l.iONTHS)

~ERVOIR FWCTUA TlON

11178 11177 1118 0171 IQIIO IIIII IB4IZ

1110

,,till

11<&4

1120

~100

1oee

::1000

2II.DO

2:17'00

1!1Dfl

IQOO

500

.2AOO

:r.-

zooo

..... • .... v 1*00

3:: 0 ..J t%00 .... =

aoo

oi(IO

0 : I i I I I I I 1 ----:---1 o 10 :zo :so ~o eo eo ro 80 uo 100

PERCENT EXCEEDED

MONTHLY RESERVOIR INFLOW DURATION CURVE

NOTE:

1. SPILLWAY DISCHARGES AND FREQUENCY OF DCCURENCES DURING THE 25 YEAR SIMULATION PERIOD ARE AS FOU.OWS:

MONTH

AUGUST

SE?TEMBl:.R

OCTOBER

DLSCHARGE No. OF OCCURENCES

637 CFS 651 CFS

152.2 CFS

19 CFS 297 CFS 307 CFS

18 CFS

o ~¥..t.sr.ITt: . .'..ta.3fmf. .. ,ltJI!;}I,.,.,,:trtrf,,,,4,,;(jil;,,,,,,7fTMn•d,¥,uun~.l:41Jiyn.~n•'n;iffirtllthF·uliJ1ijffi ... ,,,~.)'nTh .. tJt1?mf..,,,,)rn ........ , ........... , ........... , ........... , ........... , ........... , .......... , ........ 0 2.. ELEVATIONS SHOWH ARE BASED ON PROJECT DATUM. 11180 1801 111112

::J ' ' ' I ! I ' I I !

l ::t!OO 1

~ UDO •

Oi LL.

.8

~ 1000 J ~ 0 ..J u.

800 r

0 J F'w .A 1o1 J•J A

1

a'o H g

MOIHHS

OISTRIEUTJ,ON RIVER INFLOW

I 11100

t:zao

1000

reo

ao~o

%50

0

I I I I I I t I t I I

.

JflolAWJJASOHO

MONTHS

DISTRIBtJnON SPI!J.. WAY DISCHAR~

(aa; I'OTEII

1111111 IDee t•rn 1ar1 TIME STEP {MONTHSl

Oi u. 8 3: 0 ..J u.

~

'2"!K) j -, t ! t I t I f t--t-...l-..(_

1000

79

600

:r!KI

o JlliiiJ u W! II Ill p l!J.!.UJ I!! pHI!\ ..I

4 P"·-···.,·J J·._·a·o .... o ltiOH11iS

OISTRtB\JTION POWEAPU.NT DISCHARGE

1117!1 111711 11177 111'1 UTI 11110 lUI tiHIZ

11110

;::: u. - 1\80 z 0 j:: < > n&O w ..J w a: 0 11ZO > a: w cr)

~ noo

- I' I p I I "I" jiiJ It! II tUfU+Ul,JJ+I..lf-J,WAMJJ-..SONO

t.IOKTHS

OtSTRtBL'llOtC RESERVOIR ELEVATION

1 ·iMAXMJM AVERAGE

~

ID u..

100

T1l

~ 3:11D 0 It

:ra

D lll!lll 11 111 1'1! jii!'I!IIJIIj11piJ .II'YAWJJA80._1:1

MC)t4THS

DISTRIBt1110N ASH DIVERSION DISCHARGE

MEAN SEA LEVEL DATUM = PROJECT DATUM PlUS 4.D2 FT.

A

6RAOLEY LAKE HYORO".J..ECTRIC PROJECT ALASK,J, POWER AUTHORITY

RESERVOIR REGULA noN - 90MW PI..ANT WITH FISH DIVERSION DlSCHAAGE

ITONf.' wtMT'I.JII ~U'IO<l CCf...,... roo< PLATE 3

I ..

I ' ,,

-

E5"' ' ' l '

~~ -s, · e.-:J E:::i5 ! •

~ ~. ·---·. ~ ~ ~\ -~ ~ 1-··~ .. j ~-., •·-~····-~ ~;.,. -··-H ~ t:;::~-,.;'3 -. .....,_·•~j--, \r•--...•""'-'1 t • "c--.Jt -" ......._,....._ •. , • ~ ,.__,.,.._;~ . '--.. -J ~ ..... _.;, !..'-~- t ~ ~ ~/ ~-~ E:~~ t"-s· €-~ ~ ~- ~ ~ t=:::J- C::::J ~ ~::ll-- ,~; -

= I

~ %

t; z

1180 i I I I I I 1 I R I I I I I I t .,

NORMAL 'MIIXIJIW.tllfiNEL.: I (80 \ _)

1180 F I ! I l

1 I j . IIVER~GE lfiNEL\: 1158 \ "- \ 1140 11 I I . ' 0 ...

w 0 0 .. '"' ~ lo lw 1., · t \., au E r 1 1 ' R :&I I ·I \ \riJ ~I \ . 1 I \~ 2 I 1 1 I \t: ~ I I I I \! !1! I I I \o !I! 0 l I I · 1

NORMAL MINIMUM HWEL : 10801.

1080 1 1 1 1

·EMERGENcy DRAWDoiNN ffiNEI.: 1010 J 1040 ~· I I I __ , ...!._: .

1120

1100

1080 .....

1020

1000

\i ,. \ \ \ \ \ f

f­~ -\~ \s \0 ~ '~ \m \~

\i \ \ \ \ ,. \ .,

\O .Gt

\ \ \ \ i \ ~ ' ! \ . 0

~ !

180 I I I I I . I I I I I I I I I I

0 1,00 200 300 · 400 SOD 100 700 100 100 1000 1100 1200 1300

POWEAPLAfiT.DISCHARGE- eta.

NOTES: t. TURBINE EFFICIENCY ASSUMED

CONSTANT 9'i .3" 2. GENERATOR EFFICIENCY

• ASSUM~D CONSTAN'r 9~

· POWERPLANT CAPABIUTY

. FIGURE 84.6-~ .. _,,,

' ---.-~,-~ - ~-··-·--~· ----~~-- ... ~ ... ~·- -- ~- ,.,.~.-. -~----- --.. ·~---~- •. v·~ .,c_,-- - ·---~------·--·--~~·~-~,--,~--... -------~------...,__,__, __ ......__._..._.._ ____ ..,....._., ___ .._,,__.. ... --~----·-------~·---.----.....-..-.. ru--..-.-. - .. "":i:-.c."J ~-~ ··-- • -;..-.. -~' ' =':r.,. i",_,.·-· ... ~ ... ~~ -~ r~ ..... :;J~~-

--"

0

I .,. I

'

I I

,

I I I I I

,. ,-~ ., \..

'

I I I I I '·

I ~

I ''-I

Ito ··~

I

CHUGACH ELECTRIC MONTHLY GENERATION

BRADLEY LAKE HYDROELECTRIC PROJECT

369,000 MWH/YR @ 90 MW

January .53,000

February 50,000

March 40,000

April 35,000

May 20,000

June 7,000

July 7,000

Augwat 7,000

September 12,000

October 3~.000

November 50,000.

December 53,·000

Total 369,000

! ~ I l·

~

1

' 1·,

. (

I'Zi)

·- '

f . r

I '

.·

* ·· 09-MAY-85 ** I

SHEET 1 OF 4

( ' li . CHUGACH ELECTRIC LOAD SIMULATION STUDY

BRADLEY LAKE HYDROELECTRIC PROJECT

••• ALASKA POWER AUTHORITY

I r

I MONTH

CONSTANT GEN.

POLICY • I

90 HW INSTALLATION ORIGINAL ENERGY TARGETS

·<MWH>

D •

J

135 MW INSTALLATION ORIGINAL ENERGY TARGETS

CMWH> MIN MAX <*> AVE MIN MAX <*> AVE

<MWH> -----------~--=~~-+-=•••==-==~--=====-----=•==+----------=•=•=·---~~s·•===+ (------------- --- - - --- ~---- .----------1 JAN 27, 938 2.7, 939 27, 942 27, 940 I 27·, 927 27, 827 .

FEB 27, 839 27, 838 27, 842 27, 940 .. I 27, 827 27, 827 MAR 27,838 27,838 27,942 27,840 c 27~827 27,827

~,~ APR 27,838 27,838 27,842 27,840 2?,827 27,827

- l qy 27' 838 27' 838 27 !' 842 27' 840 -27' 827 :;'7' 827 ·~ , UN 27, 838 27, 838 27·, 842 27, 840 ·27, 827 27, 827

1.~ JUL 27,838 27,838 66,112 31,838 27,827 66,169 . AUG 27,838 27,838 76,.335 38,340 27,827 102,267

SEP 27,838 27,838 76,335 43~185 , 27,827 92,542 OCT 27,838 27,838 76,3~5 32,810 27,827 77,300 I NOV 27,838 27,838 36,488 28,186 27,927 36,485 DEC 27,838 27,838 27,841 .27,840 .27~827 27~827

21-!1827 27,827 Z7,827 27!1827 Z7,827

. Z7!1827 31,867 41,480 44,.541 32,838 28,173 27,827

-==================•+====-======================+===================- ' =====+

I "'iNNUAL (**) (**)

334,062 I 334,062 475~828 369,241 I 333,919 501,702 ~73!1686 :

lj

JOTES: <*> MAXIMUM MONTHLY GENERATION DURING THE PERIOD OF RECORDS

1 <**> GENERATION DURING THE WETTEST YEAR

"

I· -I

'• ~., . ........,_ .

....

l t l

l l

r·

·~ *f 09-MAY-85 ** f

r I 1;.

DESIRED CHUGACH

ELECTRIC LOAD. <MWH>

SHEET 2 OF 4

CHUGACH ELECTRIC LOAD SIMULATION STUDY .. BRADLEY LAKE HYDROELECTRIC PROJECT

ALASI<A POWER AUTHORITY

90 MW INSTALLATION ATTEMPT TO MEET

LOAD <MWH> MIN MAX <*> AVE

• I

I I

• •

135 MW INSTALLATION ATTEMPT TO MEET

LOAD <MWH> MIN MAX <*> AVE

=======·==========+••====-==--=------=========+~=======~=--=-===·=---------+ r JAN 53,000 43,982 43,982 43,982 • 4~ 98 .... ) 43,~82 43,982 ' I I ~, ~. I

FEB 50,000 41' 493. 41,493 41,493 41,493 . 41,493 41,493 ' • MAR 40,, 000 33,194 33,"194 33,194 ' 33,194 33,194 33,194 '

-1 APR 35,000 29,045 '29, 045 29,045 29,045 29,045 29.,045 ' • '.\Y 20,000 16,597 16,597 16,597 .16, 597 16,597 16,597 t

I

uN 7,000 7,000 ·7,000 7,000 7,000 7,-ooo 7,000 • '\ .... '

I J·UL 7,000 7,000 75,~49 11,362 7,000 97,552 12,226 t

I

AUG 7,000 7,000 76,335 23,190 7,000 108,042 26,984·: SEP 12,000 9,958 76,335 39,825 9,958 96,.076 41,729 OCT 35,000 29,045 76,335 34,452 29,045 77,33'3 34,492 I

' I NOV :so,ooo 41,493 41,493 41,493 41,493 41,493 41,493 ' • DEC 53,000 43,982 4" .. 98_., 43,982 43,982 43,982 43,982 : ...:>, ~

c================c+=-•==•=a=====z=•===--c•••=-•+========-===-=====••-====zc+ • •

,;.NNUAL (**}

369,000 : 309,790 497,859 365,-616 ·: 309,790

I OTES:

. :! \J[ ·~;

I.

(*) MAXIMUM MONTHLY GENERATION DURING THE (**> GENERATION DURING THE WETTEST YEAR

PERIOD OF RECORDS

• I

372,217 f

. ...... I

0

,, ,11' )~·.,r'

I ·I I i~

I I • •

!

09-MAY-85 **

I MONTH

DES·IRED CHUGACH

ELECTRIC LOAD <MWH>

SHEET 3 OF 4

CHUGACH ELECTRIC LOAD SIMULATION STUDV

BRADLEY LAKE HYDROELECTRIC PROJECT

ALASKA POWER AUTHORITY

90 MW INSTALLAT'ION • 135 MW INSTALLATION I

HIGHER SUMMER GENERATION HIGHER SUMMER GENERATION CMWH> •• CMWH> •

MIN MAX (*) AVE ~ f1IN MAX (*) AVE I

• 1

=============::===+==================·========+====-==-========~====-·====+

I JAN 53,000 43,7.24 43,724 43,724 • '4'3,724 43,724 43,724 • FEB .so, 000 41,250 41,250 41,,250 • 41,250 41,250 41,250 •

I IVJAR 40,000 32,999 32,999 32,999 32,999 32,999 32,999 . t. '='R 35,000 28,874 28,874 28,874 • 28,874 28,874 28,874 . -.. 1. _.Av

I

20,000. I 16,500 16,500 16,500 ' .16,500 16,500 16,500 I I

JUN sjooo I 8,000 e,ooo e,ooo •• B,OOO 8,000 e,ooo I I

r JUL a,ooo ~ a,·ooo 75,954 12,287 •• 8,000 97,992 1:;>, 169

I • AUG s,ooo e,ooo 76,335 23,h58 • e,ooo 108,042 2'7,442 • I I

SEP 12,000 9,900 76,.335 39, 01 .. 9,900 94,901 41,057 8 I •

OCT 35,000 28,874 76,:S35 34,:.:!65 28,874 77,333 34,304 I I

I NOV 50,000 41,249 41,249 41,249 t 41!1249 41,249 41,249 I

' I

DEC 53,000 4~ 7~4 4~,724 43,724 fl 43,724 43,724 43,724 .... , ... I

============·=~=-=+======================-~=-=+•===~==============~======+

I.NNUAL

IIOTES: (*)

I I

( 1B~·)

I. --I I ...

372~000 : 311,097 (**>

497,400 • •

365,731 : 311,097 (**>

551,146

MAXIMUM MONTHLY GENERATION DURING THE PERIOD OF RECORDS GENERATION DURING THE WETTEST \1[AR ,.

;..,.'\ ' .• r") '

--~·

• I

372,294 I

r

,..,

-I; '

l

... r I .I .. ,:··. . ' - '

r

I *t' 09-MAY-85 **

I SHEET 4 OF 4

r

I r I -:

r­

lr10NTH

DESIRED CHUGACH

ELECTRIC LOAD <MltJH> • I

CHUGACH ELECTRIC LOAD SIMULATION STUDY

BRADLEY LAKE HYDROELECTRIC PROJECT

ALASKA POWER"AUTHORITV

. 90 MW INSTALLATION 135 MW INSTALLATION

HIBHER AUG-SEPT SENERATION; HIGHER AUG-SEPT SENERATIONI CMWHJ : CMWH> I

MIN MAX (*~ 'AVE I MIN MAX (*) AVE I -I I

==================+========-•======m==========+•=-====~=~================~+ J JAN 53,000 41.~696 41,696 .I FEB 50,000 39,335 39,335 .. IVIAR 40, 0()0 .31,-468 '31,468

. , /. 'R 35,000 27,534 27 ~34 'I- . .4Y ' ' 20,000 15,734 .. 15,734

JUN 7,000 7,000 7,000 r JUL 7,000 7;000 76,.073 .

I AUG 10,000 10,000 76,335 SEP 30,000 3o~·ooo 76,335

( OCT 35,000 27-,534 76,335

I NOV 50,000, 39,336 39,336 DEC 53,000 ' 41,696 41,696 I

41,696 .39,335 31,468 27,534 15,734 7,000

12,498 26,597 4e,:s5a

.33,086 39,336 41,696

I .

' 0

I

'

41,696 39,335 31,468 27,534 -15~ 734

7,000 7,000

10,.000 ·3o,ooo 27,534 39,336 41,696

41,696 41,696 -9 --r:" ~ ,..;)...:.:.~ 39 335

' 31,468 31,468 ·27,534. 27,534 1-5,734 15,734 7,000 7,000

107,649 13,761 108,042 30,893 104,789 50,989

77!'1333 -- 1#"')7 ..;)..)' . 39,336 39,336 41,696 41,696

=====•=========m==+======&-~==z==~=====•===--=+••==•=•==•===•-====•=====~=+

,.

( . I J :(**) : (**)

~.~\JNUAL 390,000 I 318, 3.S3 4·84, 998 364" 340 I 318,333 548,282 372,570 I

I

~~ !JTES: (*)

,(**)

lr

l

I I

..... ,

MAXIMUM MONTHLY GENERATION DURINS THE PERIOD OF RECORDS GENERATION DURING 'rHE WETTEST YEAR

•

'. ..... [ f

I ........,_ ..

\ }'

I I

0 Cl .

o· Q . Q

0 0 . c; CD

I !J'.e1t,.

-1.0 LO

0 •o

(I) •

UJ~ c::-::z:: .... 0 Zc 0. ~~ L&...-,o 'co lz~ !Lt.Jg

c

Co -c •c;;

cr.! 0')

L&... Uo.

0 UJ. 0~ O:N a: ;z: Uo We -. co .... .z a: ...Jo D-o . o.., :z~""" a:: :r Co .-JO

"• I

. .. '- "":. ·- ~· .

.,r "1958 1959 1960 1S6Z ...

\

I IIIII: jlllll till ''l'' I d I til II I'' I Ill "' i i l' II l I If ltlljl L It IJII jT977 1978 1919 1980 1981 l9BZ

1959

u_ -~~~--~~~~~~~~~-~~~~~~~~~~n _o ""'--

).,': () -

. ~

I CHUGACH ELECTRIC LOAD SI"ULATIDN STUDY ' -· . BRADLEY LAKE HYDROELECTRIC P~DJECT , ~I ALASKA PDMER AUTHORITY

aaaaa::z===---=-===== ~ .

2 l 45 "M UNIT INSTALLATION -ENER~Y &ENERATIDN ("NH) : .

I· f YEAR OCT NOV DEC JAN FEB "AR APR "AY JUM. JUL AUS SEP ANNUAL

I 1957 52,651 so,ooo 53,000 53,000 50,000 40,000 35,000 2G,OOO 7,000 7,000 '78,433 31,565 477,649 1958 35~000 50,000 53,000 53,000 50,000 40,000 351000 20,000 7~000 7,000 7,000 12,000 369,000

r 1959 35,000 50,000 53,000 53,000 50,000 8,483 608 20,000 7,000 7,000 7,000 12,000 303,092 ' 1960 35,000 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 7,000 78,913 435,913

I' 1961 35,000 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 . 7,000 12,000 369,000 1962 35,000 50,000 53,000 53,000 50,000 40,000 7,789 15,045 7,000 7,000 7,000 12,000 336,833

r 1963 35,000 50,000. 53,000 53,000 50,000 40,000 9,654 5,~1 7,000 7,000 7,000 12,000 329,236 I

I 1964 35,000 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 7,000 12,187 369,187 196S 40,403 50,000 53,000 53,000 50,000 40,000 35,000 . 20,000 7,000 7,000 7,000 17,496 3799899 1966 36,489 50,000 53,000 53,000 50,000. 40i000 35,000 20,000 7,000 - 7,000 7,000 53,354 411,843

I 1967 35,000 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 7,000 12,000 369,000 1968 35,000 50_,000 53,000 53,000 46,312 675 487 18,867 7,000 7,000 7,000 12,000 290,340

' 1969 35,000 so,ooo 53,000 53,000 so,ooo 40,000 35,000 20,000 7,000 7,000 7,000 12,000 369,000

I 1970 35,000 50,000 53,000 . 53,000 50,000 40,000 28,490 7,340 7,000 . 7,000 7,000 23,952 361,782 1971 "35,000 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 7,000 12,000 369,000 1972 35;000 50,000 53,000 53,000 50,000 35,3~2 - 0 6,127 7,000 7,000 7,000 12,000 315,469

a 1973 35,000 50,000 53,000 53,000 50,000 40,000 5e092 14,195 7,000 7,000 7,000 12,000 333,288 1974 35,000 50,000 .53,000 53,000 12,170 552 0 20,000 7,000 7,000 7,000 24,603 269,325

- 19i5 35,000 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 7,ooo· .12,000 369,000 ., . ' '976 35,000 50,000 53,000 53,000 50,000 40,000 .35,000 20,000 ),000 13,695 78,433 60,352 495,481

1 !'In 35,000 50,000 Sl,OOO 53,000 ·50,000 40,000 35,000 20,000. 7,000 7,000 7,000 12,000 3.9,000 -.

.! 1978 35,000 50,000 53,000 53,000 50,000 40,000 1,888 18,139 7g000 7,000 7,000 30!201 . 352,228 J l979 78,913 so,ooo 53,000 53,000 50,000 40,000 35,000 20,000 7,000 7,000 7,000 58,593 459,506

I 1980 52,398 50,000 53,000 53,000 50,000 . 40,000 35,000 20,000 7,000 7,000 78,433 59,532 565,363 1981 35,000 50,000 53,000. 53,000 50,000 40,000 35,000 _20,000 7,000 7,000 1,oao 12,000 369,000

' -(

I PJIN 35,000 50,000 53;000 53,000 12,170 552 0 5,581 7,000 7,000 7,000 12,000 269,325 t!Al 78,913 50,000 53,000 53,000 50,000 40,000 35,000 20,000 7,000 13,695 78,433 78,913 505,363 AYE 38,434 50,000 53,000 53,000 48gl39 35,402 24,560 17,812 7,000 7,268 15,572 24,750 375,137 . ·~

I~ REL 100 .. 0% 100.0% 100.0% 100.0% 92.0% 84.0% 64.0% 11..0% 100.0% 100.0% 100.0% 100.0% 64.0%

' ..

I. EHERSY

'. 'tAX ELEV UBO HONTH TARGET, I UN ELEV lOBO 11fAX STDRASE 294141.4 OCT 35,000

. IUN STORASE 0 NOV so,oeo I \CFT TO CF'S-"DtlTH 60.33057 DEC 53,000 ,nAI FLON fCFS> 625 JAN 53,000 NU~BER DF TURBINES 2 FEB 50,000 II· TOTAL FLON CAP. 1250 MR 40,000

' APR 35,000 -· MY 20,000

-1~- JUN 7,000 JUL 7,000 AUG 7,000

I SEP 12,000

I "' ,,. ·--·~··~ ' ·' .. ~ ..... ~_, __ , ..... ....- --~ -___ . .., __ . __

~-~ \:i ;~' i), -.

~-····- ..... _. ···c···••

,, ..,.,.4'~"

.

----260oD . 0%

. '-

---- .,.._ ~ ~- ~ ~· -~:w- !lli!'Ji.~' ~ .......... .., __, .• r.-.-... ._, -··

BRADLE'Y LAKE HYDRO PROLJECT ANNUAL ENERGY DURATION CURVE 2 X +5 tv1W

.

'

'\ '-

"' I

\ '

\ .

\ . .

. \" . . .

\ " ·. 1

. . ~

·* ' " . I ~ ' • ~ .

, I .

~

.. ~. . i'\ I

' . . \ I

20% 40% 60% 80% .100%

PROBABILiTY OF EXCEEDANCE

,.~·- ~· -"' --.-.--.. .. ·" · --·- ~ .. -~ ... -~~-.. ~-....-~ ... ~·· ~....-. .. .,... ....... """'"'"" -----~~-·---__,_.....~,..-··---·-·~··~ ...... ------~ ._ __ ,..,.. .... ~~-~:._~-=- ....... h • ·"::11"""~~; « ~.· ¥.: ~ ~ .... ::;;r:~ .... · •. :;r•i4i Ah a iil'ri$!¥@Si.M·"* .....,.,_., •dn&rF!!t!MI!rmtnr"MM

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... " Jiiii*~·--:.Jiiiii ~&a Ji;;a. a!A· ~CJ~· ~e~~~ ~- ICII~'\ ~- ~ 112- ,.._ 1111-- ---- --·, -- ~ -··--!

.BRADLEY LAKE HYDRO PROJECT ANNUAL ENERGY DURATION CURVE 3 X 45 MW

540.0

520,0

500.0

I I I I

-I

. ,I I . I

-

I I I . \ ~

. ~ 480.0 -

. I~ -

460.0 --· . <

"' ,....... 440.0 :t: ~ 4-20.0

I I (.!} '--/'

b 400.0 ... l

~ 380.0 w z w 360.0

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-

.

J ~· -.

;

~ . ~

I

. .

-.

. ..;.,.~I '

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i

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--

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340.0 I

---, ~ , .. < --.

.. -- .

• 320.0 '' --,

.300.0 ~ ---1 - "'

280.0' I~ -. ~--

260.0 I

~ ~ l - - ! . .

! 1 1 0% 20% 4-0% 60% 80% 1 0·0%

PROBABILilY OF EXCEEDANCE

- ~~-_, ... ,~--------.,--.... ~----~-~............----·~~~-~-~ . .__.~_,,-..~-·--~--~----~ .... ------~·~--------~--·--·---.--........ ~---;-....... - ._-.. ---~')t; .. J- rms , ••• [ .... -if~--· ... Jt::c a.m ·-----

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~ ~- rt;... ~- ~ ~-- ~- &.::8 < CIJ-. lt:IJ-, ... .., 1131-- ----- -- ~ -· ., . . ' - -~ .

BRADLEY LAKE HYDROELECTRIC PROJECT AVERAGE rvtONTHLY ENERGY (2x4-S MYI)

56~--~----~--~--~----~--~----~--~---~----~--~

5 0 I »t:·~ l I I I I . I I I I I ~ I

15 I -

1 0 _,__ _ _., ____ _.,__ _ _,_ __ +-_

5 I I I I_ .. I I I · I · I I I I JAN FEB MAR APR MAY 'JUN JUL AUG SEP OCT NOV DEC

<

o ORG 1iEW CH(UG · . - ALT .d NON FRM. f/0 If!{ If.)

... -<·-" ~<.>- ·~ ......... - "·- .. -·--·-·· ............. ~--·- ···-~·--· ---···--------------.,---~--,,..-....... ~----.... --~--------------~~--------~...,~~-'·'W'•sop::t;!lt4 '-~1-- ·'·"' • • ....,~.,""*IPU .. E.IJiiilfiM ~i¥M""'1~

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BRADLEY LAKE HYDROE·LECTRIC PROJECT C·

AVERAGE MONTHLY ENERGY (3x45 MW) 55 .

<)

t_::; 5Q · I """<.._. I I I I I . I I I ~ I

45 • I I ~ '- I · j I I I I 1h I ~~ I ~

40

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20

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10 '·* I I'

5 I . ,,.. ·= I I I I I I I I I "' I

JAN FEB· MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

T.l ORG I CHUG -ALT A . NON FRM.

\ ,J.~MuJ

-. ·---·------····-,-~ --·--·--· --··· ,.. -··-··-·--······-· -·--~-.-..---~-·~ -·-'·~-*--~-~_,,.__. _ _,_..._.........,.._~,_.__,__..,.~.,_._........._ .. , ... c.,.,..__,__. ~ ~~~"'''!,"i •• lft•W:'H: ... ".•r < .. ~::w;p·~-tJ:iiJt4- ~ V •f>

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BRADLEY LAKE HYDROELECTRIC PROJECT FIRM MONTHLY ENERGY (2x45 AND 3x45 MW)

60 I ·-

· ---~ I I I I I 1· I

+·O

3o I \ I '~" I I I . I I /Ill

I . \ I I I '\.I I I I I Ill I 20

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o ORG ... CHUG ~ ALT A NON FRM.

ll L

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0

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BRADLEY ·LAKE HYDROELEC~TRIC PROJECT ENERGY RELIABILITY BY MONTH

60 --

50 1\ 'c 4: I I I I I I I I lllfl'!"'= I

40 1 l I I I '\. I"'-. I I · I • ~

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!1 30 I \ I \\ ~\ ~ I I I · I · I I . I I II I ~:I "' i

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20

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0 . I I t ~ I 1-" I I I I I I

JAN FEB MAR APR· MAY JUN JUL AUG SEP OCT NOV DEC

--cHUG. -+- 100% ._ 96% )z e 92% X 88% v 84%

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