The Stateline Wind Power Plant is a wind farm located on Vansycle Ridge, which receives 16 to 18 mph (26 – 29 km/h) average wind speeds from the Columbia Gorge, on the border between Washington and Oregon in the United States. With 186 turbines currently operating in both states and 279 more approved for construction, it is the largest wind project in the Northwestern United States and will be the largest in the world. Costing $300 million to build, it began operation in 2001.

The project employs 660 kW capacity Vestas wind turbines, which collectively will produce a maximum electrical output of 306.9 MW. (The current operating capacity is 122.8 MW.) On average, the project is expected to produce 30 to 35 percent of that capacity year-round. Turbines are controlled individually by electronic systems which direct them into the wind and adjust the pitch of the blades to maximize electrical production at any wind speed from 7 to 56 mph. The turbines automatically shut down at wind speeds excess of 56 mph, a feature which allows them to withstand hurricane-force winds.

The wind turbines are grouped in strings of 5 to 37 turbines, each turbine spaced approximately 250 feet (76 m) from the next, generally slightly downwind of the crest of ridges. Each turbine tower is 166 feet (50 m) tall, with blades 76 feet (23 m) wide.

Environmental impact studies determined that the site was not used extensively by birds or other species vulnerable to injury from turbines, and the turbine towers' construction, along with the use of underground power lines, was designed to minimize perching places for birds. The area around the project is used primarily for private farming, including dryland wheat farming and cattle grazing.

The Stateline Wind Project is several miles northwest of the Vansycle Wind Project in Umatilla County, Oregon. Both are owned and operated by Florida Power & Light.

Stateline Wind Farm
Country	United States
Locale	Vansycle Ridge, Umatilla County, Oregon, and Walla Walla County, Washington
Coordinates	46°02′13.98″N 118°48′23.74″W / 46.0372167°N 118.8065944°W / 46.0372167; -118.8065944Coordinates: 46°02′13.98″N 118°48′23.74″W / 46.0372167°N 118.8065944°W / 46.0372167; -118.8065944
Status	Operational
Construction began	2001
Commission date	2001 (Stateline 1) 2002 (Stateline 2) 2009 (Stateline 3)
Owner(s)	Florida Power & Light
Turbine information
Turbines	456 x 660 kW
Manufacturer(s)	Vestas Wind Systems
Hub height	164 and 207 feet
Power generation information
Installed capacity	222 MW
Maximum capacity	307 MW

The Shiloh Wind Power Plant is a wind farm located in the Montezuma Hills of Solano County, California, USA, very near to Bird's Landing. It has a nameplate capacity of 300 megawatts (MW) of power and was built in two stages.

Shiloh I

Shiloh I wind power plant started in August 2005 and completed in April 2006, the first phase of the Shiloh wind farm consists of 100 GE 1.5 MW wind turbines. They are spread across 6,800 acres (28 km²) of rolling hills and cost roughly $220 million to build. The turbines are owned by Iberdrola Renewables (formerly known as PPM Energy) and the electricity is sold to Pacific Gas and Electric (75 MW), the Modesto Irrigation District (50 MW), and the City of Palo Alto (25 MW).

The land for the turbines is leased from 26 local landowners, who continue to use it for sheep grazing and growing hay. Of the 100 turbines, 76 towers are 80 meters (262 ft) tall, and 24 towers are 65 m (213 ft) tall. The turbine rotors have a diameter of 77 m (253 ft) and rotate at a rate of 11–20 revolutions per minute.

Shiloh II

EnXco started commercial operation of the 150-megawatt Shiloh II wind power plant in February 2009. The wind farm has 75 turbines, each generating up to 2 megawatts. It produces enough energy for 74,000 homes. EnXco has a 20-year contract to sell the power to Pacific Gas and Electric Co.

The Cedar Creek Wind Farm is a 274 wind turbine facility located 13km (8 miles) east of Grover in north-central Weld County, Colorado, which became fully operational in January 2008. The 300.5 megawatt (MW) wind power installation was completed on time, within budget and without incident. Cedar Creek is an important contributor to Colorado's New Energy Economy, providing enough wind-powered electricity for 90,000 homes. The power produced from the Cedar Creek wind farm is sold to the Public Service Company of Colorado.

The project has 221 1-MW wind turbines (produced by Mitsubishi Heavy Industries) and 53 1.5-MW turbines (produced by General Electric).

The 300MW Cedar Creek Wind Energy Project came on line in Colorado, US in October 2007. With 274 turbines, Cedar Creek is located in a 13,000ha (32,000-acre) site about 13km (8 miles) east of Grover in north-central Weld County, Colorado. It is one of the largest single wind-power facilities in the US.

Cedar Creek will help Colorado achieve its goal of 20% renewable energy by 2020. Cedar Creek Wind Energy LLC owns the plant, which is a joint venture between Babcock & Brown (67%) and BP Alternative Energy (33%). The capital investment was more than $480m.

A 120km (74-mile) transmission line connects to the plant, which will supply power to around 90,000 homes. The project employed over 400 workers during construction and there will be a full-time staff of more than 20 for monitoring and maintenance.

MHI AND GENERAL ELECTRIC WIND TURBINES

Of the 274 turbines, 221 are 1,000kW models produced by MHI (Mitsubishi Heavy Industries), and the remaining 53 are 1,500kW turbines made by General Electric.

The 1,000kW MHI turbines have a hub height of nearly 70m (226ft) and a rotor diameter of 62m (202ft). Of the 221 turbines produced by MHI, 160 were manufactured at MHI's Nagasaki Shipyard & Machinery Works, with the rest coming from the Yokohama Dockyard & Machinery Works.

MHI's MWT-1000A 1,000kW turbines are designed for low-speed wind areas, with average annual values as low as 6–8m/s. The turbine has a rotor diameter of 61.4m, tower height of 60 or 68m, and an induction generator.

The 1,500kW General Electric turbines have a hub height of about 80m (262ft) and a rotor diameter of 77m (253ft). They are active yaw and pitch regulated with power/torque control capability and an asynchronous generator.

The machine uses a bedplate drive train design where all nacelle components are joined on a common structure for durability. Variable speed control and advanced blade pitch bring aerodynamic efficiency and reduce loads to the drive train. The generator and gearbox are supported by elastomeric elements to minimise noise emissions. Optional low-voltage Ride-Thru allows turbines to stay on line generating power even during grid disturbances.

JOINT VENTURE BABCOCK & BROWN/BP

In 2007, Babcock & Brown Wind Partners Group acquired B&B's 100% Class B membership interest in Cedar Creek and two other wind farms for $309m.

Babcock & Brown is one of the top five wind energy developers and operators globally. It now has over 3GW of wind energy under development around the world, primarily in the US and Europe. Babcock & Brown Wind Partners has interests in 35 wind farms on three continents, with a total installed capacity of around 1.7GW.

BP America is the largest producer of oil and gas in the US. BP Alternative Energy combines all of BP's interests in low and zero-carbon power generation: wind, solar, hydrogen power with carbon capture and storage and gas-fired power generation.

Maple Ridge Wind Farm is the largest wind farm in the state of New York in the United States, with 195 Vestas model V82 1.65 MW wind turbines. Each turbine tower is 260 feet (79 m) tall. Each turbine has blades 130 feet (40 m) long, which added to the hub diameter gives a rotor diameter of 270 feet (82 m). Collectively, the turbines are capable of producing a maximum of 320 MW, which accounts for three quarters of the wind power capacity of New York. Maple Ridge Wind Farm became fully operational in January 2006.

The wind farm is located on Tug Hill in Lewis County, New York. The site was chosen because it lies at an elevation of 1,600–1,800 feet (490–550 m) and experiences strong lake-effect weather patterns from nearby Lake Ontario. The area is used primarily as pasture and feed-crop land.

Maple Ridge Wind Farm was named in honor of Lewis County, which is the leading maple syrup producing county in New York.

Mixed feelings from neighbors of the Maple Ridge Wind Farm are reported.

The Maple Ridge Wind Farm was featured during the 2007 Wind Tour of Assemblyman Pete Lopez.

Twin Groves Wind Farm is a wind farm in the U.S. state of Illinois near the villages Arrowsmith, Saybrook, and Ellsworth in McLean County. It consists of 240 operating wind turbines. Each wind turbine stands 270 ft (65.23 m) tall and has three 85 ft (35.91 m) long blades. The wind farm was constructed from 2007 to February 2008. Twin Groves was the largest utility scale wind farm east of the Mississippi River upon completion.
The Twin Groves Wind Power Plant lies in eastern McLean County just east of Bloomington on Illinois State Route 9. The wind farm consists of 240 Vestas 1.65 MW wind turbines and is owned and operated by Horizon Wind Energy. Total cost of Twin Groves was approximately $700 million. The towers are spread out over 22,000 acres (89 km²) of McLean County, near the villages of Arrowsmith, Ellsworth, and Saybrook. The current total capacity at Twin Groves Wind Farm is 398 megawatts. The site produces enough power to power about 120,000 homes, or approximately 1.3 billion kilowatt hours annually.

As well as generating power, the wind turbines provide an added benefit to the local economy. Only 150-200 acres or (1%) of the total 22,000 acres (89 km²) will be taken up by the turbines. This will supplement local farmers who lost such land. Royalties are paid to owners of the land at $5,000 per wind turbine. The two adjacent school districts also benefit from the property taxes brought in, Ridgeview School District will start collecting $300,000 a year, while Tri-Valley School District will collect between $200,000-$250,000 a year.

With 240 wind turbines already generating power, Horizon Wind Energy is considering to add an additional 170 wind turbines, to bring the total number of turbines to 410. Test wind turbines are being placed in eastern McLean County to determine if additional wind turbines can be supported. If constructed, power generation estimates for the wind farm increase from 398 megawatts to 680 megawatts.