WY – Montana-Dakota UtilitiesJul 28, 2025Rateacuity.comImportant Rate ChangesElectric, WY Case: 20004-174-ER-25/17880 Initial Filing Date: 6/30/2025 Summary: 26% Residential, 30.74% Small General, 15.15% Large General, 15.81% Lighting, 40.10% Irrigation Effective Date: 2/1/2026 Status: Pending Type: Electric