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HomeMy WebLinkAboutNome Preliminary Wind Resource Report AEA - Mar 2006 www.akenergyauthority.org/programwind.html Page 1 of 2 March 2006 813 W. Northern Lights Blvd. Anchorage, AK 99503 Phone: 907-269-3000 Fax: 907-269-3044 www.akenergyauthority.org Preliminary Wind Resource Assessment for NOME, ALASKA Date last modified: 3/21/2006 Compiled by: Mia Devine Anvil Mountain Site Latitude (NAD27): 64.5Û N Longitude (NAD27): 165.4Û W Elevation: ~300 meters Tower Type: Wooden telephone pole Sensor Height: 12 meters Monitor Start: 10/6/2005 20:00 Monitor End: 3/14/2006 16:00 Snake River Site Latitude (NAD27): 64Û 34.290 N Longitude (NAD27): 165Û 28.210 W Elevation: 18 meters (60 ft) Tower Type: 30-meter NRG Tall Tower Sensor Heights: 30m, 20m Monitor Start: 11/10/2005 16:00 Monitor End: 3/14/2006 15:00 Both sites experienced some data loss due to icing of the sensors; however, icing at the Anvil Mountain site was much more severe than the Snake River Site, as shown below. Data Loss Due to Icing of Sensors Month Anvil Mountain Site Snake River Site Jan 31% 9% Feb 59% 7% Mar 43% 3% Apr May June July Aug Sept Oct 15% Nov 13% 4% Dec 57% 18% Anvil Mountain Site Alaska Energy Authority NOME, AK Preliminary Wind Resource Assessment www.akenergyauthority.org/programwind.html Page 2 of 2 March 2006 For this preliminary evaluation, gaps in the data due to iced sensors were filled with a statistical software program. A more thorough analysis will verify this data against measurements from the Nome Airport weather station after a full year of monitoring is complete. The graph below summarizes the data collected to date for both sites. The wind speed is greater at the Anvil Mountain site even though the sensors are mounted on a shorter tower. However, Anvil Mountain is more susceptible to icing conditions and is more difficult to access. Wind turbines at this site may experience more down time and higher O&M costs than the Snake River site. 0 2 4 6 8 10 12 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov DecWind Speed (m/s)Anvil Mountain (12m height) Snake River (30m height) Average Monthly Wind Speeds More data needs to be collected to better quantify the difference between the sites in terms of power production from wind turbines. The table below offers a preliminary analysis of what two different models of wind turbines could produce at each site based on the data collected to date. The wind speeds are scaled up to a wind turbine hub height of 50 meters based on a conservative wind shear of 0.10. Preliminary Power Production Estimates (kWh) Anvil Mountain Site Snake River Site Wind Turbine Model: Vestas V27 225kW Vestas V47 660kW Vestas V27 225kW Vestas V47 660kW Jan 38,000 134,000 18,000 64,000 Feb 79,000 249,000 76,000 249,000 Mar 156,000 485,000 67,000 216,000 Apr May June July Aug Sept Oct 59,000 192,000 Nov 79,000 254,000 42,000 148,000 Dec 91,000 309,000 51,000 176,000 The summer winds are expected to be considerably lower than the winter months so power production during those months will also be lower.