MidAmerican Energy told the Iowa Utilities Board in a June 1 update that it is making progress with the two projects in its Wind IX development program.
The Wind IX facilities will be installed at two sites: the 7-MW Highland II site, in O’Brien County, which will include three turbines; and the 154.3-MW Adams site in Adams County, which will include 64 turbines. Through April 30, expenditures on Wind IX total $41.3 million. The currently estimated project cost is $230.9 million, or $1,431/kW.
The wind turbines were purchased from Siemens Energy. The estimated project cost of $1,431/kW compares favorably to the cost cap of $1,500/kW. The facilities are expected to be in-service by Dec. 15, 2015.
- The Highland II site was acquired from Highland Wind Energy LLC and will interconnect to the 345-kV system at a new substation in O’Brien County. This wind farm site received an executed Conditional Generator Interconnection Agreement (GIA) dated July 2014. No added transmission studies were required beyond what was completed for the Wind VIII Highland site. Operation of the site is guided by the Conditional GIA. Until all identified upgrades and contingent facilities are completed, the site will be limited to a 475 MW injection limit and subject to the Annual ERIS Evaluation and the Quarterly Operating Limit (QOL) studies which may limit the injection further.
- The 154.3-MW Adams site, located in Adams County, was acquired from Adams Wind Energy LLC and interconnects to the 161-kV system at a new substation in Adams County. This wind farm site has received an executed Provisional Generator Interconnection Agreement dated March 23, 2015.
If the board has no objection to that practice, MidAmerican said it would propose to file its next Wind IX update on or before Sept. 1, 2015.