What changed in this filing

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Item 2. Properties

2022-02-16 compared with 2021-02-19 · 44 added, 21 removed, 0 unchanged (100% of the section changed)

The Coyote Station, which commenced operation in 1981, is a 414,000 kW (nameplate rating) mine-mouth plant located in the lignite coal fields near Beulah, North Dakota and is jointly owned by OTP, Northern Municipal Power Agency, Montana-Dakota Utilities Co.

and Northwestern Public Service Company.

OTP is the operating agent of the Coyote Station and owns 35% of the plant.

OTP, jointly with Northwestern Public Service Company and Montana-Dakota Utilities Co., owns the 414,000 kW (nameplate rating) Big Stone Plant in northeastern South Dakota which commenced operation in 1975.

OTP is the operating agent of Big Stone Plant and owns 53.9% of the plant.

Located near Fergus Falls, Minnesota, the Hoot Lake Plant is comprised of two separate generating units:

a unit built in 1959 (53,500 kW nameplate rating) and a unit added in 1964 (75,000 kW nameplate rating) and modified in 1988 to provide cycling capability, allowing this unit to be more efficiently brought online from a standby mode.

These two generating units have a combined nameplate rating of 128,500 kW.

Current plans are for both units to be retired from service in 2021.

OTP owns the 245,000 kW (nameplate rating) Astoria Station simple-cycle natural gas-fired combustion turbine generation facility near Astoria, South Dakota, scheduled to begin commercial operation in March 2021.

OTP owns 27 wind turbines at the Langdon, North Dakota Wind Energy Center with a nameplate rating of 40,500 kW, 32 wind turbines at the Ashtabula Wind Energy Center located in Barnes County, North Dakota with a nameplate rating of 48,000 kW, 33 wind turbines at the Luverne Wind Farm located in Griggs and Steele Counties, North Dakota with a nameplate rating of 49,500 kW and 75 wind turbines at the Merricourt Wind Energy Center located in McIntosh and Dickey Counties, North Dakota with a name plate rating of 150,000 kW.

As of December 31, 2020, OTP’s transmission facilities, which are interconnected with lines of other public utilities, consisted of 780 miles of 345 kV lines, of which 731 miles are jointly owned;

495 miles of 230 kV lines, of which 70 miles are jointly owned;

917 miles of 115 kV lines;

and 4,011 miles of lower voltage lines, principally 41.6 kV.

OTP owns the uprated portion of 48 miles of the 345 kV lines, with Minnkota Power Cooperative retaining title to the original 230 kV construction, and OTP owns an undivided interest in the remaining 345 kV line miles.

OTP is a joint owner, with other regional utilities, in transmission lines with the following ownership interests:

14.8% in the 70 mile Bemidji-Grand Rapids 230 kV line, approximately 14.2% of 242 miles of energized line in the Fargo–Monticello 345 kV project, approximately 4.8% of 255 miles of energized line in the Brookings to Southeast Twin Cities 345 kV project, 50.0% of 72 miles of energized line in the Big Stone South–Brookings 345 kV project, and 50.0% of 162 miles of energized line in the Big Stone South–Ellendale 345 kV project.

In addition to the properties described above, all of which are utilized by the Electric segment, the Company owns and has investments in offices and service buildings utilized by each of its manufacturing and plastic pipe companies.

The Company’s subsidiaries own facilities and equipment used in the manufacture of PVC pipe, thermoformed products, heavy metal fabricated products, metal parts stamping, fabricating, painting and contract machining.

Management of the Company believes the facilities and equipment described above are adequate for the Company’s present business.

The following provides a summary of our properties which are material to our operations, by segment, as of December 31, 2021.

ELECTRIC SEGMENT

The following reflects our wholly or jointly owned material electric generation facilities as of December 31, 2021:

Description Location Year

Placed in Service Fuel Type Capacity - kW

(Nameplate Rating)

Big Stone Plant (1)

Big Stone City, SD 1975 Subbituminous Coal 223,146

Coyote Station (2)

Beulah, ND 1981 Lignite Coal 144,900

Jamestown Combustion Turbine Jamestown, ND 1975 Natural Gas/Oil 48,108

Lake Preston Combustion Turbine Lake Preston, SD 1978 Natural Gas/Oil 24,100

Solway Combustion Turbine Solway, MN 2003 Natural Gas/Oil 44,500

Astoria Station Astoria, SD 2021 Natural Gas 245,000

Langdon Wind Center Langdon, ND 2007 Wind 40,500

Ashtabula Wind Center Barnes County, ND 2008 Wind 48,000

Luverne Wind Farm Griggs and Steele Counties, ND 2009 Wind 49,500

Merricourt Wind Energy Center McIntosh and Dickey Counties, ND

2020 Wind 150,000

(1) OTP holds a 53.9% joint ownership interest in this jointly owned facility.

The nameplate capacity indicated reflects OTP's ownership percentage.

(2) OTP holds a 35.0% joint ownership interest in this jointly owned facility.

The nameplate capacity indicated reflects OTP's ownership percentage.

In addition to our generation facilities, we wholly or jointly own transmission and distribution lines as of December 31, 2021 as follows:

Less than 115 kV 4,028

Less than 115 kV 2,660

(3) As of December 31, 2021, OTP held a 14.2% ownership interest of 242 miles, a 4.8% ownership interest of 250 miles, and a 50.0% ownership interest of 234 miles of the 345 kV transmission lines, with the remaining miles being wholly-owned.

(4) As of December 31, 2021, OTP held a 14.8% ownership interest of 70 miles of the 230 kV transmission lines, with the remaining miles being wholly-owned.

MANUFACTURING AND PLASTICS SEGMENTS

The following reflects the material properties of our Manufacturing and Plastic segments as of December 31, 2021:

Segment/Location Owned/Leased Facility Type/Use Approximate

Manufacturing Segment

Washington, IL Leased Office/Manufacturing/Warehouse 217,508

Detroit Lakes, MN Owned Office/Manufacturing/Warehouse 353,812

Lakeville, MN Leased Office/Manufacturing/Warehouse 413,000

Dawsonville, GA Owned Office/Manufacturing/Warehouse 172,000

Buford, GA Leased Warehouse 71,357

Clearwater, MN Owned Office/Manufacturing/Warehouse 203,840

Otsego, MN Leased Manufacturing/Warehouse 86,400

Plastics Segment

Fargo, ND Owned Office/Manufacturing/Warehouse 122,441

Fargo, ND Leased Warehouse 239,580

Phoenix, AZ Owned Office/Manufacturing/Warehouse 86,066

We believe the facilities described above are adequate for our present business.

Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 2. Properties