Wind Today - Q2 2008 - (Page 37)

Question: How many GE 1.5 megawatt (MW) wind turbines does it take to replace 90 KENETECH 56-100 kilowatt (kW) wind turbines? Answer: Six. That’s what happened when enXco, Escondido, CA (760-329-1437), decided to repower part of its enXco V Wind Farm in 2006. History History The enXco V Wind Farm, located on approximately 2,300 acres at Birds Landing in Solano County, CA, was developed and constructed in 1989 by U.S. Windpower as a 60 megawatt (MW) wind farm. The original facility consisted of 600 KENETECH 56-100 wind turbines erected on 60- and 80-foot lattice towers. It’s located in a region known as the Collinsville-Montezuma Hills Wind Resource Area, designated by Solano County in 1987 as land suitable for wind energy development. According to Robert Righter’s book Wind Energy in America (p. 181), in 1987, U.S. Windpower, Inc. was the top wind turbine producer in the United States. U.S. Windpower changed its name to KENETECH Windpower in 1993. “The KENETECH 56-100 model which was put into operation in 1989 was a 56-foot diameter, 100 kW wind turbine,” says John Opris, operations manager at enXco V. Opris says the 56-100 has a variable pitch system where the blades pitch on the axis. “The variable pitch made this model more flexible so it could be adapted to the lower winds in the Montezuma Hills wind resource area,” says Opris. “Most of the Danish wind turbines used at that time had pitchless, or fixed, blades that worked better in areas like the Altamont Pass where winds could get up to 60-70 miles per hour (mph),” says Opris. WP 89 When U.S. Windpower started this Solano County wind farm, the company called the site WP 89. “In those days, wind farms were named according to when the development was formed,” says Opris. “So when U.S. Windpower started this project it was called ‘WP 89’. We called ourselves the ‘Solano Site.’” Opris and Kirk Garlick, enXco V site Facility Highlights Location: Birds Landing, Solano County, CA Size: 60 MW, approximately 2,300 acres Distance Between Towers: KENETECH 56-100: 70 ft. GE 1.5: 600 ft. average Developer: Original portion, U.S. Windpower. Repowered segment, enXco Development Corporation Owner: enXco Project Capacity: 60 MW Power Contract: Pacific Gas & Electric (PG&E) Connector & Transmission System: 230 kW, through a 40 MVA transformer (ASEA Brown) Substation: Russell Substation, owned by Sacramento Municipal Utility District (SMUD) Utility: Pacific Gas & Electric Commissioning: enXcoV 1998. enXco Repower 2006. T urbine Features Turbines: 490 KENETECH 56-100, 107.5 kW 6 GE 1.5 sle 60 Hz, 1.5 MW Tower: KENETECH 56-100, 60 & 80 ft. lattice three- and four-leg. GE 1.5, 80 meter single pedestal, manufactured at Chengzi Shipyard. Blade Length: KENETECH 56-100 @ 25 ft.; GE 1.5 @ 37.2 meter. Pad Construction: KENETECH 56-100 Pylons, cylinder. GE 1.5, Inverted “T”. Rotor: KENETECH 56-100 @ 56 ft. three-blade; GE 1.5 @ 77 meter, three blade. Onboard Computer: KENETECH 56100 WACS1A, 1B, Proprietary; GE 1.5 GE Visupro SCADA system. Gears: Three stage planetary/helical gear. Transformer: Pad mounted 300-1110 MVA (enXco V turbines) Other: GE 1.5 Converter, GE Key Personnel: Project Manager: John Opris Site Supervisor: Kirk Garlick Operations & Maintenance Director: Larry Barr enXco V Repower, Operations and Control Center (OCC): enXco 37

Table of Contents Feed for the Digital Edition of Wind Today - Q2 2008

Wind Today - Q2 2008 Contents WINDPOWER 2008 - Host City - Houston WINDPOWER 2008 Special Events CanWEA 2008: Fast Forward to Wind Global Wind Plant Ownership Top 15 States with Wind Energy Installed Ranking the Percentage of State Electricity from Wind Largest Wind Farms in the United States Owners with the Most Wind Power Assets in the United States Rick Perry Bluegrass Ridge, Cow Branch, and Conception Wind Farms Loess Hills Wind Farm Bob Emick enXco V and enXco V Repower Climb Assist Devices GWEC Market Forecast Ports of Entry Satisfy Customers WINDPOWER 2008 Schedule Calendar Seven Principal Financing Structures Used in Utility-Scale Wind Projects Raising Project Funds Through Private Placements The Minnesota Flip Business Model Wind Resource Glossary WT Transmission Corn Plus Coop Adds Wind Energy Wind Resource Maps Ryan Orban, Iberdrola Renewables Liz Cussans, TransAlta Wind Bolton & Menk Trachte Port of Corpus Christi NPPD Interstate Truck Rental & Sales Dr. Shrink Aldridge Electric HYTORC Product Surveys Ad Index

Wind Today - Q2 2008

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