ENR Midwest 2025 Top Starts

March 2026

More detailed information on the Top Design Firms:
Midwest Megaproject Construction Surges

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ENR Midwest 2025 Top Starts

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Rank	Project/ Location	Project Cost ($ Mil.)	Start Date/ End Date	Owner	Team
1	Northland Reliability Project Taconite, Minn.	1,100	Sept. 2025 July 2030	Minnesota Power and Great River Energy	Engineer: Minnesota Power
2	Koshkonong Solar Energy Center Christiana, Wis.	900.2	Sept. 2025 Dec. 2026	Wisconsin Public Service, WE Energies, Madison Gas & Electric	General Contractor: Blattner Energy LLC Engineer: Invenergy Civil Engineer: Westwood Professional Services
3	New Castle Bluff Energy Center St. Louis	900	Nov. 2025 May 2027	Ameren Missouri	Contractor: Plocher Construction Engineer: Sargent & Lundy
4	GM & Samsung SDI Battery Cell Factory Building One New Carlisle, Ind.	875	Dec. 2025 Dec. 2027	Samsung SDI America Inc., General Motors Corp., Ultium Cells	General Contractor: Barton Malow Architect: Ghafari
5	Socrates North Natural Gas Power Generation New Albany, Ohio	800	Oct. 2025 Aug. 2026	Williams Cos.	Contractor/Engineer: Williams Cos.
6	Compass Data Center ORD Buildings 1-3 Hoffman Estates, Ill.	600	Dec. 2025 July 2030	Compass Data Centers	General Contractor: Power Construction Architect: Gensler Civil Engineer: Kimley-Horn & Associates
7	Panther Grove Wind Farm Benson, Ill.	558	June 2025 Dec. 2026	Copenhagen Infrastructure Partners	Engineer: Farnsworth Group Inc.
8	STTP Organics Receiving and Bioenergy Utilization Lockbourn, Ohio	433	May 2025 July 2031	City of Columbus, Ohio	General Contractor: Kokosing International Structural Engineer: Arcadis US Inc. Architect: Brown and Caldwell
9	Mammoth Central Solar, Phase 1 and 2 Centertown, Ind.	401	July 2025 July 2027	Doral Renewables, American Electric Power	General Contractor/Engineer: Bechtel Corp.
10	Carpenter Wind Farm Carpenter, Ind.	365	March 2025 Dec. 2025	Carpenter Wind Farm, EDP Renewables North America	Engineer: EDP Renewables North America