ALLETE, Inc. Announces Retirement of Margaret A. Thickens as Chief Legal Officer and Corporate Secretary, Effective May 31, 2024

ALLETE, Inc. is a clean-energy transformation company that owns, operates and developing wind energy generation to reduce carbon footprint. The Company’s segments include Regulated Operations and ALLETE Clean Energy. Regulated Operations includes regulated utilities, Minnesota Power, and SWL&P, as well as investment in ATC, a Wisconsin-based regulated utility that owns and maintains electric transmission assets in portions of Wisconsin, Michigan, Minnesota, and Illinois. Minnesota Power provides regulated utility electric service in northeastern Minnesota to approximately 150,000 retail customers. ALLETE Clean Energy segment is focused on developing, acquiring, and operating clean and renewable energy projects. The segment owns and operates, in seven states, more than 1,200 MW of nameplate capacity wind energy generation with a contract under power sales agreements (PSAs) of various durations. It engages in the development of wind energy facilities to operate under long-term PSAs.