Investor Presentaiton

aMW Electric System 1100- 1000- 900- • 800- Retail Actual | Forecast ⚫ Residential, Irrigation, Small and Large Commercial are forecasted using econometric modeling Residential, Irrigation, and Small Commercial: 10-year normal for weather assumptions Other rate schedules are subject to qualitative measures based on management discussions with District forecasters 700- 600- 500- 400- 300- 200- 100- 0 Grant PUD Actuals and Forecast aMW Sales Customer Type Large Industrial Industrial Ag Food Process Large General EV Charging Street Lights Irrigation Commercial 2006 2008 2010 2012 2014 2016 2018 2020 2022 2024 2026 2028 2030 2032 2034 2036 Year Source: 2023v2 Forecast Residential Losses

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