Otter Tail Corp
For the period ended Dec 31, 2025. Filed Feb 18, 2026.
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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.
FY2025 · Filed Feb 18, 2026
OTTR$79.86+1.8%Stored close · as of Nov 9, 2026
Extracted filing text, with the paragraph anchors used by the comparison.
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Definitions
The following abbreviations or acronyms are used in the text:
| AFUDC | Allowance for Funds Used During Construction | kW | kiloWatt |
|---|---|---|---|
| AME | Available Maximum Energy | kwh | kilowatt-hour |
| ARO | Asset Retirement Obligation | LSA | Lignite Sales Agreement |
| ARP | Alternative Revenue Program | MATS | Mercury and Air Toxics Standards |
| ASC | Accounting Standards Codification | MDT | Metering and Distribution Technology |
| BSER | Best System of Emission Reduction | MISO | Midcontinent Independent System Operator |
| BTD | BTD Manufacturing, Inc. | MPUC | Minnesota Public Utilities Commission |
| CCMC | Coyote Creek Mining Company, L.L.C. | MW | Megawatt |
| CCR | Coal Combustion Residual | NAV | Net Asset Value |
| CDD | Cooling Degree Day | NDDEQ | North Dakota Department of Environmental Quality |
| CIS | Center for Information Security | NDPSC | North Dakota Public Service Commission |
| CO2 | Carbon dioxide | NERC | North American Electric Reliability Corporation |
| CODM | Chief Operating Decision Maker | Northern Pipe | Northern Pipe Products, Inc. |
| COSO | Committee of Sponsoring Organizations of the Treadway Commission | OBBBA | One Big Beautiful Bill Act |
| DOE | U.S. Department of Energy | OEMs | Original Equipment Manufacturers |
| DOJ | U.S. Department of Justice | OTC | Otter Tail Corporation |
| ECO | Energy Conservation and Optimization Rider | OTP | Otter Tail Power Company |
| EEI | Edison Electric Institute | PIR | Phase-in Rider |
| EEP | Energy Efficiency Plan | PSLRA | Private Securities Litigation Reform Act of 1995 |
| EPA | Environmental Protection Agency | PTCs | Production tax credits |
| ERISA | Employee Retirement Income Security Act of 1974 | PVC | Polyvinyl chloride |
| ESSRP | Executive Survivor and Supplemental Retirement Plan | RHR | Regional Haze Rule |
| EUIC | Electric Utility Infrastructure Costs Rider | ROE | Return on equity |
| FASB | Financial Accounting Standards Board | REC | Renewable Energy Certificate |
| FCA | Fuel Clause Adjustment | RRR | Renewable Resource Rider |
| FERC | Federal Energy Regulatory Commission | RTOs | Regional Transmission Organizations |
| FOB | Free on Board | SDPUC | South Dakota Public Utilities Commission |
| GCR | Generation Cost Recovery Rider | SEC | Securities and Exchange Commission |
| GHG | Greenhouse Gas | SIP | State Implementation plan |
| HDD | Heating Degree Day | SO2 | Sulfur Dioxide |
| HDPE | High-Density Polyethylene | SOFR | Secured Overnight Financing Rate |
| ICSP | Information and Cybersecurity Program | SPP | Southwest Power Pool |
| IRP | Integrated Resource Plan | T.O. Plastics | T.O. Plastics, Inc. |
| IT | Information Technology | TCR | Transmission Cost Recovery Rider |
| ITC | Investment Tax Credits | TSR | Total Shareholder Return |
| JTIQ | Joint Targeted Interconnection Queue | VIE | Variable Interest Entity |
| kV | kiloVolt | Vinyltech | Vinyltech Corporation |
The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.