Mankato Battery Energy Storage Project

Project Details

Docket Numbers
energy storage project26-158
Project Name
Mankato Battery Energy Storage Project
Applicant
Onward Energy Holdings, LLC
Location
Blue Earth County
Description

Mankato Energy Center, LLC (Applicant), a wholly owned subsidiary of Onward Energy Holdings, LLC, proposes to construct a batter energy storage system (BESS) and associated facilities (Project), in Blue Earth County, Minnesota. 

Status
active

Project Contact

Contact
Tessa Kothlow
Phone
651-539-1069

Project Summary

Mankato Energy Center, LLC, proposes to construct the up to 30-megawatt (MW) / 60-megawatt hours (MWh) battery energy storage system (BESS) and associated facilities (Project) in the City of Mankato, Blue Earth County, Minnesota. Associated facilities would include inverters, transformers, electrical systems, and a short underground gen-tie (less than 800 feet). The project will be located entirely within the existing Mankato Energy Center (MEC) and is designed to provide a "behind-the-meter" storage system for the existing MEC Facility's CT2 facility when needed.

Map Image

Map of project coming soon

Key Project Documents

Date
Title
Description

Docket Documents

View All Project Documents 

Date Document ID On Behalf Of Description
May 29, 2026 20265-232304-44 Mankato Energy Center, LLC Appendix J - Cultural Resources - Redacted
May 29, 2026 20265-232304-35 Mankato Energy Center, LLC Appendix D-2 - Agency Responses 2 of 2
May 29, 2026 20265-232304-40 Mankato Energy Center, LLC Appendix A - EIP Staff Comments
May 29, 2026 20265-232304-39 Mankato Energy Center, LLC Appendix B - Maps 3 of 3
May 29, 2026 20265-232304-34 Mankato Energy Center, LLC Appendix D-2 Agency Responses 1 of 2
May 29, 2026 20265-232304-37 Mankato Energy Center, LLC Appendix B - Maps - Cover Page & Maps 1 of 3
May 29, 2026 20265-232304-41 Mankato Energy Center, LLC Site Permit Application and Environmental Assessment
May 29, 2026 20265-232304-33 Mankato Energy Center, LLC Appendix D-2 Cover Page
May 28, 2026 20265-232304-18 Mankato Energy Center, LLC Appendix M - T&E Species 4 of 6 - 2025-12-15_Mankato BESS_USFWS NLEB DKey
May 28, 2026 20265-232304-22 Mankato Energy Center, LLC Appendix L - Vegetation Management Plan (VMP)
May 28, 2026 20265-232304-08 Mankato Energy Center, LLC Appendix O - Wildlife Habitat Assessment - 2 of 7 - Desktop Wildlife Habitat Assessment DNR Auto Response
May 28, 2026 20265-232304-19 Mankato Energy Center, LLC Appendix M - T&E Species 5 of 6 - 2026-01-09_Mankato Energy Center BESS_MNDNR Response Letter
May 28, 2026 20265-232304-17 Mankato Energy Center, LLC Appendix M - T&E Species 3 of 6 - 2025-11-07_Mankato Energy Center BESS_IPaC
May 28, 2026 20265-232304-02 Mankato Energy Center, LLC Appendix P - Greenhouse Gas Analysis
May 28, 2026 20265-232304-27 Mankato Energy Center, LLC Appendix H - MPUC Sample Site Permit - Cover Page
May 28, 2026 20265-232304-26 Mankato Energy Center, LLC Appendix I - Noise Assessment
May 28, 2026 20265-232304-14 Mankato Energy Center, LLC Appendix M - T&E Species - Cover Page
May 28, 2026 20265-232304-23 Mankato Energy Center, LLC Appendix K - Wetland Delineation - Cover Page
May 28, 2026 20265-232304-25 Mankato Energy Center, LLC Appendix I - Noise Assessment - Cover Page
May 28, 2026 20265-232304-12 Mankato Energy Center, LLC Appendix O - Wildlife Habitat Assessment - 6 of 7 - Desktop Wildlife Habitat Assessment IPaC Bats DKey
May 28, 2026 20265-232304-13 Mankato Energy Center, LLC Appendix O - Wildlife Habitat Assessment - 7 of 7 - Desktop Wildlife Habitat Assessment IPaC T&E DKey
May 28, 2026 20265-232304-11 Mankato Energy Center, LLC Appendix O - Wildlife Habitat Assessment - 5 of 7 - Desktop Wildlife Habitat Assessment IPac 12-15-2025
May 28, 2026 20265-232304-16 Mankato Energy Center, LLC Appendix M - T&E Species 2 of 6 - 2025-11-03_Mankato BESS_MNDNR Initial Response
May 28, 2026 20265-232304-24 Mankato Energy Center, LLC Appendix K - Wetland Delineation - Wetland Delineation - Aquatic Resource Report
May 28, 2026 20265-232304-20 Mankato Energy Center, LLC Appendix M - T&E Species 6 of 6 - 2026-03-27_Mankato BESS_USFWS RPBB DKey updated
May 28, 2026 20265-232304-04 Mankato Energy Center, LLC Appendix O - Native Prairie Assessment
May 28, 2026 20265-232304-09 Mankato Energy Center, LLC Appendix O - Wildlife Habitat Assessment - 3 of 7 - Desktop Wildlife Habitat Assessment DNR NHR Response
May 28, 2026 20265-232304-07 Mankato Energy Center, LLC Appendix N - Wildlife Habitat Assessment - Pieces 1 of 7 - 2026-03-27_Mankato BESS_USFWS RPBB DKey updated
May 28, 2026 20265-232304-01 Mankato Energy Center, LLC Appendix P - Cover Page
May 28, 2026 20265-232304-30 Mankato Energy Center, LLC Appendix F - Decommissioning Plan