BIG STONE II POWER PLANT AND TRANSMISSION PROJECT
DOE/EIS-0377PARTICIPATING UTILITIES ANNOUNCE WIND-DOWN OF BIG STONE II PROJECT
The Big Stone II Project participants—Central Minnesota Municipal Power Agency, Heartland Consumers Power District, Missouri River Energy Services and Montana-Dakota Utilities Co.—announced Nov. 2 that they will not build the Big Stone II Project. The project required additional participants to move forward; however none have committed.
RECORD OF DECISION ISSUED
On Aug. 24, WAPA issued its Record of Decision for the Big Stone II Power Plant and Transmission Project Final Environmental Impact Statement. WAPA considered the environmental impacts of the Project and has decided to allow the request to interconnect at WAPA’s Morris and Granite Falls substations located in Minnesota. Additionally, an interconnection agreement must be completed in accordance with WAPA’s Tariff. WAPA conditions its environmental approval of the Co-owner’s request to interconnect to Western’s transmission system upon the adoption and implementation of the mitigation measures as described in the Final EIS.
WAPA received an application to interconnect the BigStone II Power Plant and Transmission Project into WAPA’s transmission system. The Project entails the construction of a new 600-megawatt coal-fired electric power generating station adjacent to the existing Big Stone plant in Grant County, South Dakota. The Project also includes approximately 140 miles of new or upgraded transmission lines.
WAPA’s Open Access Transmission Service Tariff provides open access to its transmission system if there is available capacity on the transmission system, while protecting the transmission system reliability, and considering the applicant’s objectives. WAPA’s Federal involvement is related to the determination of whether to approve the interconnection request for the Project.
ABOUT BIG STONE II
The Big Stone II Project involves the construction of an approximately 600-MW, coal-fired generating facility near Milbank, in Grant County, S.D. The Big Stone II generating unit would be located next to the existing Big Stone Plant, and would require new or upgraded transmission lines in the area. Two transmission alternatives are proposed in South Dakota and Minnesota. Voltage on the proposed transmission lines would most likely be 230 kV.
- Record of Decision – Federal Register notice, August 24. 2009 (56 kb pdf)
- Final Environmental Impact Statement Notice of Availability – Federal Register notice, June 26,2009 (48 kb pdf)
- Supplemental Draft EIS Notice of Availability – Federal Register notice, October 26, 2007 (pdf 50 kb)
- Newsletter, March 2007 (pdf 276 kb)
- Extension of comment period – Federal Register notice, July 7, 2006 (pdf 50 kb)
- Draft EIS Notice of Availability – Federal Register Notice, May 23, 2006 (pdf 59 kb)
- Local Notice of Availability of Draft EIS and Public Hearing Notice
- Scoping Summary Report (pdf 1.61 MB)
- Notice of Intent (pdf 58 MB)
- Newsletter, June 2005 (pdf 11 MB, 11″x17″)
- EIS Determination; April 2005
NEPA Document Manager
Big Stone II EIS, B0400
Upper Great Plains Region
Western Area Power Administration
P.O. Box 35800
Billings, MT 59107-5800
1-800-336-7288 or 406-247-7405
Last modified on August 22nd, 2023