Query
Mosinee Mill
Type
Entity Briefing
Entity
Mosinee Mill
State
IL
Generated
2026-10-19T17:48:43.558Z

Briefing on Mosinee Mill

Entity Briefing
Generated Oct 19, 2026·Dataset freshness not reported
23 MW
Capacity
Operating
Current status
1916
Operating since
5
Generators
57.6%
Capacity factor
118 GWh
Annual generation
Briefing/plantOperating

Mosinee Mill is a 23 MW Conventional Hydroelectric asset in MISO (Midcontinent), currently Operating.

Mosinee Mill is reported in Wisconsin since 1916 under Bain Capital. Available operating and financial measures include 57.6% capacity factor and 118 GWh annual generation; $3495/kW reported CapEx.

Location
Marathon, Wisconsin
Technology
Conventional Hydroelectric, Wood/Wood Waste Biomass
Owner / parent
Bain Capital
Operator
Ahlstrom-Munksjo NA Specialty Solutions, LLC
Grid
MISO (Midcontinent)
Plant ID
50614

What stands out

1

Mosinee Mill is a 23 MW Conventional Hydroelectric asset in Wisconsin with status Operating.

2

Latest annual operating measures report 57.6% capacity factor and 118 GWh annual generation.

3

Available financial measures include $3495/kW CapEx.

4

Latest linked story: “Ahlstrom’s Mosinee plant announces closure of two paper machines, pulp mill” (WSAW, 2026-03-02).

Market and operating context

ISO / market
MISO (Midcontinent)
Balancing authority
Midcontinent Independent Transmission System Operator, Inc..
NERC region
MRO
State rank
#2 of 2
National rank
#57 of 60

Why it matters

For this asset in MISO (Midcontinent), operating status, generation, ownership, and linked events are the primary facts for performance and asset-level diligence. The exact chart and source-linked records below let the reader test those facts before moving to a deeper report.