Investor Presentaiton

Addressing customer and industry needs. ALLETE clean energy. SMART. POWERFUL. AHEAD. Expanding new carbon-free energy sources Repowering assets to extend operating lives. Solving wind technician talent demands Driving O&M efficiency - service solutions ✓ Evaluating new technologies - solar, storage Exploring wind blade recycling/reuse Innovative partnerships to create value, manage risk ALLETE Clean Energy is partnering with institutes in Minnesota and North Dakota to explore options that will keep blades out of a landfill. https://www.kfyrtv.com/content/news/Researchers-are-developing-a-study-on-how-to-recycle-wind- turbines-in-North-Dakota-565299481.html 38 ALLETE

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