Otter Tail Corporation

A MEASURE OF EXCELLENCE

Accounting Services; Business Acquisition and Merger Consultation; Advertising and Publicity Services, Namely, Promoting and Marketing the Goods and Services of Others Through All Public Communications Means; Human Resources Consultation and Management; Shareholder and Business Records Management and Financial Records Management;

A MEASURE OF EXCELLENCE

Holding Company Services, Namely, Acquisition, Management, and Transfer of Company Stakes as Well as the Intermediation of Equity Capital Financing of Companies, Namely, Asset Acquisition, Consultation, Development and Management Services; Financial Services, Namely, Financial Analysis and Consultation; Financial Planning; Financial Risk Management;

A MEASURE OF EXCELLENCE

Building Construction Services; Construction Grading Services; Construction Services in the Fields of Energy, Telecommunications, Data Communications, and Electricity; Installation, Maintenance, and Repair of Structures and Facilities Used in the Fields of Energy, Telecommunications, Data Communications, and Electricity; Mechanical and General Construction Services in the Water, Wastewater, Commercial, Healthcare, Industrial, Power, Fabrication, Service, and Special Projects Industries; Construction of Energy Transmission and Distribution Lines, Substations, Wind Farms, Telecommunications and Fiber Optics Systems and Commercial/Industrial Electrical Projects; Mechanical Contractor Services;

A MEASURE OF EXCELLENCE

Manufacturing Services for Others in the Fields of Metals, Plastics, PVC Pipe, and Polymer-Based Materials; Welding; Die Casting; Metal Stamping; Metal Fabrication and Finishing Services for Others; Manufacturing of PVC Pipe, Plastic Packaging and Wrapping for the Medical, Medical Device, Industrial, Consumer, Food, Electronics, and Horticulture Industries; Custom Manufacturing of Plastic Packaging and Wrapping for the Medical, Medical Device, Industrial, Consumer, Food, Electronics, and Horticulture Industries;

A MEASURE OF EXCELLENCE

Legal Services; Analysis of Data, Policy and Process and Provision of Business Management Advice and Assistance to Ensure Compliance with Laws and Regulations;

OTTER TAIL CORPORATION

Holding company services, namely, acquisition, management, and transfer of company stakes as well as the intermediation of equity capital financing of companies, namely, asset acquisition, consultation, development and management services; financial services, namely financial analysis and consultation; financial planning; financial risk management;CORPORATION;

OTTER TAIL CORPORATION

Accounting Services; Business Acquisition and Merger Consultation; Advertising and Publicity Services, Namely, Promoting and Marketing the Goods and Services of Others Through All Public Communications Means; Human Resources Consultation and Management; Shareholder and Business Records Management and Financial Records Management; Shareholder Services, Namely, Annual Shareholder Meeting Planning, Proxy Tabulation, Preparing Business Reports, and Providing Consumer Information and Related News to Investors in the Field of Company Financial Information and Business Developments and Events;CORPORATION;

OTTER TAIL CORPORATION

CORPORATION;Information technology consultation; Shareholder Services, Namely, Maintaining Web Sites for Others Containing Investor Relations Material;

OTTER TAIL CORPORATION

Legal services; analysis of data, policy and process and provision of business management advice and assistance to ensure compliance with laws and regulations;CORPORATION;

V

The mark consists of a stylizedV consisting of a long trapezoid on the left at a 45 degree angle and appears adjacent to a triangle which forms the right half of the V.;Color is not claimed as a feature of the mark.;Advertising and publicity services, namely, promoting and marketing the goods and services of others through all public communications means; human resources consultation and management;