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This webpage contains information and documents related to the permitting of this project by the Minnesota Public Utilities Commission. Every project before the Commission has an electronic docket (eDocket), a file folder for all of the project's documents.

Documents for this project are listed below in the File Register, most recent documents first. To view the eDockets record for this project, click on the eDockets link below, or click on the eDockets tab in the File Register. A subset of the record, including key documents with descriptions, is available by clicking on the Energy Facilities tab in the File Register.

For more information about participating in the permitting of this project, click on the How to Participate tab, or contact the environmental review manager or public advisor listed below.

Project Docket

Docket No IP6949/GS-15-620
Project name Mankato Energy Center Expansion
Applicant Calpine; Mankato Energy Center II, LLC
Description Mankato Energy Center II, LLC proposes to construct a 345 MW expansion of the Mankato Energy Center in the city of Mankato, Blue Earth County
Subjects Environmental policy; Power plants
Location Blue Earth County; Blue Earth County -- Mankato City
Docket created: July 22, 2015
Contacts: Ray Kirsch, 651-539-1841, Environmental Review Manager.
, , Public Advisor.
Status:
 
10-13-2015
Public meeting
 
10-14-2015
Application accepted
 
11-3-2015
Scoping decision
 
02-18-2016
Environmental document available
 
03-7-2016
Public hearing
 
04-13-2016
ALJ report issued
 
06-23-2016
Permit issued
 
Project built
 
Docket closed
eDockets 15-620
Mailing list Contact the Public Utilies Commission at docketing.puc@state.mn.us or 651-201-2204 or 1-800-657-3782 to sign up.
Project Summary

Mankato Energy Center II, LLC (applicant) proposes to construct a 345 MW expansion of the Mankato Energy Center (MEC) in the city of Mankato, Blue Earth County. 

The applicant proposes to add a combustion turbine generator, a heat recovery steam generator, and associated facilities to the MEC.  This expansion of the MEC will allow for the production of an additional 345 megawatts.  The MEC was designed and constructed to accommodate this expansion.

The project will use natural gas as a fuel source.  Existing infrastructure installed for the MEC (e.g., electrical transmission, gas pipeline, water service) will be used for the project.  The applicant indicates that construction of the project is anticipated to begin in 2016, with a projected operational date of July 1, 2018.

Primary Documents
DateDocumentDescription
06/23/16 Commission Order Issuing a Site Permit for the Mankato Energy Center Expansion | document details
Commission order issuing a site permit. Includes the Commission's order, findings of fact, and site permit
06/23/16 Site Permit for Mankato Energy Center Expansion | document details
The site permit issued by the Commission for the Mankato Energy Center expansion project. Includes site permit text and maps
02/18/16 Environmental Assessment for Mankato Energy Center Expansion
The environmental assessment (EA) evaluates the potential human and environmental impacts of the project and possible mitigation measures
08/05/15 Site Permit Application for the Mankato Energy Center Expansion
The site permit application submitted by Mankato Energy Center II, LLC to the Minnesota Public Utilities Commission for the expansion of the Mankato Energy Center
File Register
Energy Facilities eDockets
DateDocumentDescription
12/02/16 Notice of Comment Period on Proposed Transfer of the Site Permit for the Mankato Energy Center | document details
The Minnesota Public Utilities Commission is soliciting comments on a proposed transfer of the site permit for the Mankato Energy Center. Initial comments are due by December 16, 2016; reply comments are due by December 23, 2016
06/23/16 Site Permit for Mankato Energy Center Expansion | document details
The site permit issued by the Commission for the Mankato Energy Center expansion project. Includes site permit text and maps
06/23/16 Commission Order Issuing a Site Permit for the Mankato Energy Center Expansion | document details
Commission order issuing a site permit. Includes the Commission's order, findings of fact, and site permit
05/06/16 EERA Comments and Recommendations on Proposed Findings and Conclusions for the Mankato Energy Center Expansion | document details
EERA staff comments on the applicant's proposed findings and conclusions for the project
04/13/16 Administrative Law Judge's Summary of Public Testimony for the Mankato Energy Center Expansion | document details
The administrative law judge's summary of public testimony from the public hearing, including comment letters received during the hearing comment period
02/18/16 Environmental Assessment for Mankato Energy Center Expansion
The environmental assessment (EA) evaluates the potential human and environmental impacts of the project and possible mitigation measures
02/18/16 Notice of Environmental Assessment Availability for Mankato Energy Center Expansion | document details
The Department of Commerce has issued the environmental assessment (EA) for the proposed Mankato Energy Center expansion project. The EA evaluates the potential human and environmental impacts of the project and possible mitigation measures
02/08/16 Notice of Public Hearing for Mankato Energy Center Expansion | document details
A public hearing for the Mankato Energy Center expansion project will be held on Monday, March 7, 2016, at 6:00 p.m. at the Country Inn & Suites in Mankato, Minn. Comments on the project will be accepted through March 18, 2016.
11/05/15 Notice of Environmental Assessment Scoping Decision for Mankato Energy Center Expansion | document details
The Department of Commerce has issued the scoping decision for the environmental assessment (EA) that will be prepared for the proposed Mankato Energy Center expansion. The EA is scheduled to be issued in February 2016
11/03/15 Environmental Assessment Scoping Decision for the Mankato Energy Center Expansion | document details
The scoping decision issued by the Department of Commerce for the environmental assessment (EA) that will be prepared for the project. The scoping decision identifies the potential impacts and mitigation measures that will be examined in the EA and those matters outside the scope of the EA
10/29/15 Comments Received on the Scope of the Environmental Assessment for the Mankato Energy Center Expansion | document details
Comments received on the scope of the environmental assessment, including agency comments and a citizen comment.
10/14/15 Public Information and Scoping Meeting Handouts for the Mankato Energy Center Expansion
Handouts provided to persons attending the October 13, 2015, public information and scoping meeting in Mankato, Minn
10/14/15 Commission Order Finding the Site Permit Application for the Mankato Energy Center Expansion Complete | document details
The Commission's order finding the site permit application for the Mankato Energy Center complete and requesting that an administrative law judge from the Office of Administrative Hearings be appointed to preside over the public hearing and prepare a summary report of the comments received
09/18/15 Notice of Public Information and Scoping Meeting for the Mankato Energy Center Expansion Project | document details
A public information and scoping meeting will be held Tuesday, October 13, 2015, at 6:00 p.m. at the Country Inn & Suites in Mankato, Minn. Public comments on the scope of the environmental assessment to be prepared for the project will be accepted through October 27, 2015.
08/24/15 EERA Comments and Recommendations on Application Completeness for Mankato Energy Center Expansion | document details
EERA staff recommends that the Commission accept the site permit application as complete. Additionally, EERA staff recommends that the Commission take no action on an advisory task force at this time.
08/10/15 Notice of Comment Period on Application Completeness for Mankato Energy Center Expansion | document details
The Minnesota Public Utilities Commission is soliciting comments on the completeness of the site permit application for the Mankato Energy Center expansion project. Initial comments are due by August 24, 2015; reply comments are due by August 31, 2015
08/05/15 Site Permit Application for the Mankato Energy Center Expansion
The site permit application submitted by Mankato Energy Center II, LLC to the Minnesota Public Utilities Commission for the expansion of the Mankato Energy Center

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