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HomeMy WebLinkAboutSummary Supplement on Railbelt Utilities, May 1986ECO Alaska Power Authority 048 LIBRARY COPY 5/86 Alaska Power Authority Summary Supplement on 3 Railbelt Utilities Alaska Electric Power Statistics 1985 May 1986 INTRODUCTION This report is an advance supplement to the annual statewide "Alaska Electric Power Statistics" publication. The supplemental report presents information on installed capacity, net generation, peak and kilowatt hour sales information for railbelt utilities. Data on utilities in Fairbanks, Palmer, Anchorage, Seward and Homer are included. Information for the period of January - December, 1985 was provided by utility representatives. The 1984 comparison data was taken from a report titled "FERC Form No. 1: Annual Report of Electric Utilities, Licensees and Others (Class A and Class B)." The FERC report is filed annually with the Alaska Public Utilities Commission by each regulated utility. For non-regulated utilities, 1984 comparison data was taken from Alaska Power Authority's power statistics records. Representatives of railbelt utilities have provided a great deal of assistance in the preparation of this report. This supplemental publication is a result of their combined efforts. 4176/597(2) Eco ous 5/86 PURPOSE: The purpose of this report is to provide a regional overview of 1985 power statistics information on railbelt utilities. This report has been prepared in advance of Alaska Power Authority's annual "Alaska Electric Power Statistics" publication, which will be available this fall. There have been many changes in the past year that affect power sales activities among railbelt utilities. As a result of the Anchorage-Fairbanks Intertie, railbelt utilities have formed closer working relationships through power sales agreements. Other forms of cooperative organization, such as the Alaska Systems Coordinating Council, Bradley Lake Technical Coordinating Committee and the Intertie Operating Committee reflect a move towards closer regional organization in the 1980's. REPORT BACKGROUND This supplemental report includes only a portion of the information that will be provided in the "Alaska Electric Power Statistics" report later this year. The "Alaska Electric Power Statistics" report is a historical compilation of statistics, which categorizes data by regions of the state. The 1985 information in this report will be added to the data base in the statewide report. 4176/597(3) Railbelt utilities can be classified by their generation, trans- mission or distribution activities; form of ownership and regulatory status. One major group of railbelt utilities consists of Rural Electric Cooperatives (REAs). Most REAs in Alaska are regulated by the Alaska Public Utilities Commission (APUC). Chugach Electric Association, Inc. (CEA) is the largest utility in the State and the largest of the REAs. It is a generation, transmission and dis- tribution cooperative serving over 60,000 members. CEA sells retail and wholesale power to a majority of the railbelt's consumers. Other rural electric cooperatives in the railbelt area include Homer Electric Association (HEA), Matanuska Electric Association (MEA) and Golden Valley Electric Association (GVEA). HEA, headquartered in Homer, serves most of the Kenai Peninsula and the community of Seldovia. Up through 1985, all of its power has been purchased from CEA. This will change in 1986, when the Alaska Electric Generation & Transmission Cooperative inaugurates its 39 MW gas-fired facility in Soldotna. | MEA has its headquarters in Palmer. Since 1975, MEA has purchased its power from CEA. MEA serves the Matanuska Susitna Valley north of Anchorage as a distribution cooperative. MEA's position in the railbelt utility market will change in 1986, when it is scheduled to commence with wholesale power purchases from the newly-formed Alaska Electric Generation and Transmission Cooperative. The Alaska Public 4176/597(4) Utilities Commission approved its wholesale contract in early May 1986. GVEA is a rural electric cooperative located in Fairbanks. GVEA serves the greater Fairbanks area, together with Fairbanks Municipal Utility System (FMUS). The Fairbanks utilities buy and sell power from each other and purchase power from Anchorage through the new Intertie. Anchorage Municipal Light & Power (AML&P) is the largest municipal utility in both the railbelt and the State. Although most municipal utilities in Alaska are unregulated, AML&P currently falls under the jurisdiction of the APUC. AML&P and CEA have historically had overlapping service areas in Anchorage. In the latter part of 1984, a customer transfer between CEA and AML&P took place. The exchange resulted in a net gain of over 7,000 customers to AML&P. This transfer had an impact on AML&P's overall loads, which is reflected in its-1985 net generation totals (see accompanying tables and graphs). Both utilities' net generation figures were affected by the energization of the Anchorage-Fairbanks Intertie in October, 1985. Seward Electric System (SES) is the smallest municipal utility in the railbelt group. SES purchases the majority of its power from CEA, 4176/597(5) although it does periodically generate with city-owned diesel genera- tors. The Eklutna project is a 30 megawatt (MW) hydroelectric plant operat- ed by the Alaska Power Administration (APA-E). The Eklutna project is the only federal power plant in the railbelt area. The following sections of this report include tables and graphs which illustrate some of the activities described above. This supplemental report is concerned primarily with supply side data. This should be taken into account when using this information to draw conclusions about railbelt power production as differentiated from use. 4176/597(6) SECTION I INSTALLED CAPACITY The following table describes installed capacity for each railbelt utility. 1985 information for this table was received directly from utilities. In the case of regulated utilities, this information corresponds with the appropriate pages of 402-410 of "FERC Form No. 1: Annual Report of Electric Utilities, Licensees and Others (Class A and Class B)." Regulated utilities will be submitting the 1985 FERC report to the APUC in the near future. Data for 1984 was taken from the Alaska Electric Power Statistics report for that year. 4176/597(7) HEADINGS: Symbol a) AML&P Anchorage Municipal Light & Power b) CEA Chugach Electric Association, Inc. c) MEA Matanuska Electric Association d) APA-E Alaska Power Administration - Eklutna e) HEA Homer Electric Association f) HEA* Homer Electric Association g) SES Seward Electric System h) FMUS Fairbanks Municipal Utility System i) GVEA Golden Valley Electric Association * This is the Seldovia portion of HEA's Service area. It's back up generation capacity is considered separately for purposes of this report. LOCATION: "Location" refers to where the utility's headquarters is situated. HEA is the exception, where service areas have been designated under this heading. 4176/597(8) nYPE: Type refers to the form of organization or level of government ownership. Types are broken down as follows: M Municipal Cc Cooperative E Federal Ss State INSTALLED CAPACITY: Installed capacity is based on nameplate capacity of generators as stipulated in the FERC report cited above. It is recognized that actual turbine/generator performance varies with ambient temperature and atmospheric pressure and that nameplate capacity "ratings" vary because of this. Figures are presented in megawatts. Subheadings "Hydro," "Diesel (internal combustion)," "Gas Turbine," and "Steam Turbine" refer to the type of generation equipment used to produce electricity, not the feedstock fuel. For example, AML&P and CEA steam turbines are combined cycle units, using waste heat from natural gas fired units. FMUS and GVEA steam turbines are coal-fired units. In a separate example, AML&P's and CEA's gas turbines are fired by natural gas and FMUS's and GVEA's gas turbines are fired by oil. 4176/597(9) Between 1984 and 1985, changes in railbelt utilities' installed capacity have been minor. SES added five megawatts of new capacity in 1985. It should also be pointed out that GVEA reports ownership of two 3.5 megawatt gas turbines in its total capacity, but that these units are leased to Glacier Highway Electric Association (GHEA). CEA closed its 14.5 Knik Arm steam plant in 1985, dropping its steam turbine installed capacity from 71.5 MW to 57.0 MW. The table on the following page presents a 1984-1985 summary of utilities' installed capacity. The table is followed by two bar graphs which show installed capacity by generating utility and installed capacity by type of generating equipment for all railbelt utilities combined. 4176/597(10) RAILBELT UTILITIES 1985 INSTALLED NAMEPLATE CAPACITY (MW) DIESEL CAS STEAM SYMBOL LOCATION TYPE TOTAL HYDRO (ic) TURBINE TURBINE 1984 1985 1984 1985 1984 1985 1984 1985 1984 1985 a) antap') Anchorage M 310.7 299.3 0.0 0.0 2.2 2.6 275.5 262.7 33.0 34.0 b) CEA Anchorage Cc 507.8 493.3 15.0 15.0 0.0 0.0 421.3 421.3 71.5 57.0°2) c) MEA Palmer c 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 d) APA-E Anchorage F 30.0 30.0 30.0 30.0 0.0 0.0 0.0 0.0 0.0 0.0 Palmer e) HEA Homer c 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Kenai P. f) HEA Seldovia c 2.1 2.1 0.0 0.0 2.1 2.1 0.0 0.0 0.0 0.0 g) SES Seward M 5.5 10.5") 0.0 0.0 5.5 10.5 0.0 0.0 0.0 0.0 h) ruus (1) Fairbanks M 65.1 65.3 0.0 0.0 8.2 8.3 28.3 28.5 28.5 28.5 i) GVEA Fairbanks c 217.7 217.7 0.0 0.0 21.2 21.2 171.5 171.5 25.0 25.0 TOTAL 1,138.9 1,118.2 45.0 45.0 39.6 44.7 896.6 884.0 158.0 144.5 (1) 1984-85 installed capacity figures vary because different methods of calculation were used. (2) This figure reflects reduction in installed capacity because of the Knik Arm plant closing. (3) 1985 figure reflects the addition of two, 2.5 MW units. 4260/597(1) MEGAWATTS 1984-1985 INSTALLED CAPACITY (MW) BY UTILITY 600 — ——-- a y 500 wo | OI WLM 100 84 «85 Ni 84 «85 SOY A Ni\ SS . Zaza = & * SIN SSBS AML&P CEA APA-E HEA-S SES FMUS GVEA UTILITIES [77] DIESEL (I\N STEAM HYDRO KS Gas *Installed Capacity may vary from year to year due to differences in the way it is calculated. MEGAWATTS (Thousands) RAILBELT UTILITIES 1984-1985 INSTALLED CAPACITY (MW) * i-r 896.6 884.0 0.9 0.8 4 0.7 7 0.6 4 0.5 + 0.4 7 0.3 4 0.2 4 O17 45.0 45.0 99.2 44.7 (LLL LLL HYDRO DIESEL GAS STEAM TYPE OF GENERATING EQUIPMENT VY] 1984 1985 *Installed Capacity may vary from year to year due to differences in the way it is calculated. SECTION II RAILBELT UTILITIES NET GENERATION There are a few changes in utilities' net generation between 1984 and 1985 which are noteworthy. AML&P's owned net generation, for example, increased by 43%. The increase was predominantly due to increased retail load from the boundary transfer, sales to CEA through a joint power agreement and sales to Fairbanks via the Intertie. CEA showed a 46% gain in net generation at its Cooper Lake hydroelectric facility between 1984 and 1985. This change was a result of higher runoff for the year and modifications to the facility, which allowed the reser- voir height to be increased. FMUS's total net generation between 1984 and 1985 also changed substantially. Overall, net generation dropped by 28%. This re- duction consisted of an 81% drop in oil-fired net generation and a 26% drop in coal-fired net generation. FMUS increased its 1985 power purchases from GVEA and Anchorage utilities via the Intertie while it continued work on its Chena plant, in an effort to meet federal and state particulate emissions standards and complete routine mainte- nance on boilers. 4176/597(14) The table on the following page illustrates changes in net generation between 1984 and 1985 for each utility by type of fuel. The percent- age of change in net generation for each category is indicated. Net generation does not include station service. Information is present- ed in megawatt hours. Two graphs also illustrate 1984 and 1985 net generation. The first graph presents 1984 and 1985 net generation figures for each generat- ing utility by fuel type. Distribution utilities (such as MEA and HEA); and cities with small backup generating capacities (such as Seldovia and Seward) do not show on this graph. The second graph combines 1984 and 1985 net generation figures for all utilities and presents these totals by fuel type. 4176/597(15) RAILBELT UTILITIES 1984-1985 NET GENERATION (MWH) ‘neration from Seldovia's diesel backup units in 1984 and 1985. Seldovia used additional power which was supplied by HEA. Total Hydro Oil Gas Coal 1984 1985 % Change 1984 1985 % Change 1984 1985 % Change 1984 1985 % Change} | 1984 1985 |% Change 674,039 934,374.00 42.86 0 0 0 0 0 0 654,039 934,374 45.08 0 0 0 1,873,334 1,859,255.00 - 75 32,929 47,996 45.76 0 0 111,840,405 | 1,833,449 - 38 0 0 0 0 0.00 0 0 0 0 0 0 0 0 0 0 0 0 0 164 ,581 145,925.00 711.34 164 ,581 145,925 11.34 0 0 0 0 0 0 0 0 0 0 0.00 0 0 0 0 0 0 0 0 0 0 0 0 0 86 0.11 -99.87 0 0 0 086 0.1 -99.87 0 0 0 0 0 0 0 4,746.00 0 0 0 0 4,746 e 0 0 0 0 0 0 140,201 100,998.00 -27.96 0 0 0 5,382 1,015 -81.14 0 0 0}) 134,819 | 99,983 | -25.84 401,455 408,026.00 1.74 0 0 0 215,882 | 211,994 - 2.08 0 0 0] |185,573 |196,032 6.22 3,233,696 3,453,324.1 7.0 197,510 193,921 2.0 221,350 | 217,755.1 2.0 |] 2,484,444 | 2,767,823 11.0] |320,392 | 296,015 7.0 MEGAWATT—HOURS RAILBELT UTILITIES 1984-1985 NET GENERATION. BY UTILITY * 1.8 UN j iN = UN 1.2 GN Pui YN a 0.9 ON 3 a aN 0.6 4/7 UN 0.5 ZN “UN UN “INA eS a Re ~ 2. or > APA-E HEA-S SES FMUS GVEA FUEL TYPES ZZ] 1984 ICN) 1985 HEA-S (Seldovia) and SES (Seward Electric System) have backup generation units which operate periodically. Because of the small amount of generation, they do not show on this graph. MEGAWATT—HOURS (Millions) 1985-1985 NET GENERATION BY 3.0 2.8 5 2.6 = 2.47 2.2 7 2.0 5 1.8 1 1.6 1.4 4 127 1.0 4 0.8 7 0.6 7 0.4 4 0.2 0.0 0.198 0.194 HYDRO 0.221 0.218 (AN RAILBELT UTILITIES FUEL TYPES 1984 FUEL TYPE 0.320 9,296 COAL SECTION III RAILBELT UTILITIES PEAK DEMAND This section compares utilities' monthly 1984 and 1985 requirements for peak retail loads. Peak figures may vary depending on the method of reporting. Page 401 of the FERC report to the APUC describes the type of reading performed by regulated utilities. Some utilities, for example, report instantaneous peaks. Other utilities peaks are based on 60 minute or integrated 15 minute intervals. Caution should be exercised in comparing utilities' monthly peaks reported on the FERC 401 forms, because some utilities may include resale figures. Peak figures used in this report may not be coincident. They cannot be added without consideration of coincidence to obtain overall monthly peak figures for railbelt utilities. The following table presents monthly, comparative peak requirement figures for 1984 and 1985. Power generated for resale is not includ- ed in generating utilities' monthly peak figures. Data is presented from July-June to better illustrate winter peaks in line graphs. A separate line graph is presented for each utility comparing 1984 and 1985 peaks. Again, these peaks include power generated for 4176/597(16) resale. The graphs are scaled in megawatts from a base of zero. Peaks are non-coincident and, therefore, cannot be readily compared among utilities. 4176/597(17) Symbol a) AML&P b) CEA c) MEA e) HEA f) HEA g) SES h) FMUS i) GVEA e) HEA f) HEA g) SES h) FMUS i) GVEA e) HEA f) HEA g) SES h) FMUS i) GVEA b) CEA c) MEA e) HEA f) HEA g) SES h) FMUS i) GVEA Location Anchorage Anchorage Palmer Homer, Kenai P. Seldovia Seward Fairbanks Fairbanks Location Anchorage Anchorage Palmer Homer , Kenai P. Seldovia Seward Fairbanks Fairbanks Anchorage Anchorage Palmer Homer , Kenai P. Seldovia Seward Fairbanks Fairbanks _Location_ Anchorage Anchorage Palmer Homer , Kenai P. Seldovia Seward Fairbanks Fairbanks a a a ozzo ° ook Ooms ra ° oo sk oz=zo0 ° oosk 4 oz zo oO oosf RAILBELT UTILITIES 1984-1985 MONTHLY PEAK DEMAND (MW) (Requirements for Retail Load) JANUARY 1984 1985 124.0 138.0 223.8 179.6 89.2 78.1 67.5 58.1 0.0 0.0 5.8 5.6 28.2 25.2 74.7 65.6 AP RL 1984 1985 105.0 134.0 153.8 185.9 56.4 75.9 56.4 58.6 0.0 0.0 5.3 6.2 22.0 22.5 52.2 61.5 JULY 1984 1985 102.0 123.5 131.3 136.6 47.0 51.1 53.5 54.6 0.0 0.0 5.0 5.7 21.9 23.2 45.6 49.5 OCTOBER 1984 1985 124.0 141.5 182.1 187.1 72.0 81.9 56.1 67.3 0.0 0.0 5.2 5.6 23.1 25.2 65.5 75.4 FEBRUARY 1984 1985 124.0 143.0 201.5 197.1 80.7 89.2 63.2 64.7 0.0 0.0 5.4 6.4 27.5 28.2 72.7 72.7 MAY 1984 1985 104.0 121.0 145.0 136.8 51.5 61.0 57.5 52.8 0.0 0.0 5.2 5.9 21.7 22.6 48.6 53.3 AUGUST 1984 1985 106.5 123.0 141.7 147.5 52.2 60.4 47.8 53.0 0.0 0.0 5.0 5.6 21.8 22.8 49.6 51.0 NOVEMBER 1984 1985 140.5 153.4 193.3 197.2 85.0 88.7 62.5 71.0 0.0 0.0 6.2 5.8 27.2 26.8 73.8 81.4 * Figures include power generated to meet retail load requirements, purchases and losses. not included. 4260/597(3) MARCH 1984 1985 111.0 133.6 7S er 173.3 64.4 74.2 eZ 57.8 0.0 0.0 4.7 5.7 23.5 26.0 61.8 66.6 JUNE 1984 1985 102.0 120.4 137.0 132.4 50.0 55.2 55.8 50.5 0.0 0.0 4.5 5.9 22.2 22.7 47.6 50.3 SEPTEMBER 1984 1985 116.5 117.4 143.4 152.0 56.4 64.0 56.5 56.7 0.0 0.0 4.8 5.5 21.9 23.1 52.0 58.0 DECEMBER 1984 150.0 196.6 S122 63.9 0.0 6.2 29.2 77.5 1985 149.0 194.4 86.8 68.5 0.0 Bal 27.4 79.3 Resale power is MEGAWATTS 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 ANCHORAGE MUNICIPAL LIGHT & POWER 1984—1985 RETAIL PEAK DEMAND (MW) “T — 1 —_ Je ae 4 SoS ~ / a \ ——" 4 a y / ; —_—— I. Le a——AL N_| BL -_—— | ee = —H ome 7 4 + 4 aj T T T 1 1 1 T T 1 t JUL AUG SEP OcT NOV DEC JAN FEB MAR APR MAY oOo 1984 + 1985 1 JUN MEGAWATTS n n o n So o 140 120 100 60 20 0 CHUGACH ELECTRIC ASSOCIATION 1984-1985 RETAIL PEAK DEMAND (MW) 4 Pr | a Ne | “ 4 “ | 7 f= . SU 4, i ai Ir SA eae * | S/S Bk \ 4 Jf 7 \ | eA “s_\ | — / 7 7 ae ae Va. ; - YL = | + | 4 4 | | =i T T T T T T T T T T 4 JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN o 1984 + 1985 MEGAWATTS 100 —— 90 + 80 + 70 4 60 + ; aan 40 MATANUSKA ELECTRIC ASSOCIATION 1984— 1085 RETAIL PEAK DEMAND (MW) Zt \ SY 30 4 20 4 10 | 0 —— r "——T T 1 JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN Oo 1984 ets 1985 MEGAWATTS HOMER ELECTRIC ASSOC. (HOMER, KENAI P.) 1984-1985 RETAIL PEAK DEMAND (MW) 80 7 70 4 60 - 50 7 40 - 30 20 7 10 7 SS rT T 1 JUL AUG SEP oct NOV DEC JAN FEB MAR APR MAY JUN Oo 1984 + 1985 MEGAWATTS SEWARD ELECTRIC 1984-1985 RETAIL PEAK DEMAND (MW) 6-7 DS eli a eee mete a Tc ual fs mara = ucts Ps am pent! Gun nnd! JUL AUG SEP OCcT NOV DEC JAN FEB MAR APR MAY JUN Oo 1984 + 1985 MEGAWATTS FAIRBANKS MUNICIPAL UTILITY SYSTEM nO Pee ae cP Ce | SP TMT wnt nen ! on 4 { atl al | ! SO 7 Ve y 2 A mie | 7 | LT ina Ulli | 20 - Sa 15 a | ' | | i | ' 10 ~ | i | 0+ ra ii TT MITTIN T STATIN ITNITIE JUL AUG SEP Oct NOV DEC JAN FEB MAR APR MAY JUN a 1984 + 1985 MEGAWATTS 90 80 70 60 50 40 30 20 10 0 GOLDEN VALLEY ELECTRIC ASSOCIATION 1984-1985 RETAIL PEAK DEMAND (MW) + T —F = tT" al | 7 T T oI JUL AUG SEP ocT NOV DEC JAN FEB MAR APR MAY JUN Qo 1984 + 1985 SECTION IV UTILITY SALES The following table provides a 1984-1985 comparison of utilities' megawatt hour sales on their own retail systems. For regulated utilities, this information is presented on page 401 of the "FERC Form No. 1: Annual Report of Electric Utilities, Licensees and Others (Class A and Class B)" on line 21 [Sales to Ultimate Consumers (including interdepartmental sales)]. Sales for resale to other utilities are reported separately. The retail sales figures for 1985, provided in part by Anchorage Municipal Light & Power, are preliminary. Sales figures include residential, commercial and industrial customers. System losses have been deducted from the figures presented below. Total Retail Sales (MWH) Utility 1984 1985 Difference % Change jon L . > ’ . CEA 961,926 960,000 - 1,926 -- MEA 393 ,622 433,315 39,693 10.08 HEA 349,019 382,981 33,962 9.73 SES 28,905 33,141 4,236 14.65 FMUS 134,693 141,433 6,740 5.00 GVEA 360,140 384,017 23,877 6.63 Total 2,914,243 3,148,781 234,538 8.00 4176/597(18) CONCLUSION Between 1984 and 1985, there have been only minor changes in in- stalled capacity among railbelt utilities. Chugach Electric Asso- ciation (CEA) closed its Knik Arm plant, reducing steam turbine capacity by 14.5 MW. Seward Electric System (SES) added 5.0 MW of new generation. Other variations in installed capacity were due to differences in calculation methods between 1984 and 1985. Overall, net generation among railbelt utilities increased about seven percent between 1984 and 1985. Anchorage Municipal Light and Power (AML&P) showed an increase of 43% in net generation, which was predominantly due to increased retail load from the boundary transfer, sales to CEA through a joint power agreement and sales to Fairbanks via the Intertie. Fairbanks Municipal Utilities System's (FMUS) net generation decreased by about 28%, due to shutdowns on its Chena plant for maintenance and work on its emission control system. Other generating utilities showed small changes in net generation, and the federal Eklutna project's net generation dropped a little over eleven percent. Between 1984 and 1985 railbelt utilities, overall retail sales increased by about eight percent. AML&P showed the greatest change with an increase of 127,956 megawatt hours in retail sales. This represented an increase of almost 19%. MEA followed with an increase 4176/597( 20) of 39,693 megawatt hours (10% increase) and HEA with an increase of 33,962 megawatt hours (9.73% increase). Monthly retail peaks for all utilities were fairly consistent between 1984 and 1985. For generating utilities, these peaks do not include power generated for resale to other utilities. System losses and purchases are included in the peaks. This supplemental report has provided a brief overview of 1984-1985 electric power statistics on railbelt utilities. The coming year should show some interesting changes in power sales agreements and power sharing among railbelt utilities. The AEG&T's entry into the railbelt power market will change utility relationships in the coming year. Shifts in net generation due to purchases and sales over the Anchorage-Fairbanks Intertie will continue to affect supply or generation relationships among utilities. 4176/597(21)