Commissioner profileJoseph K. SullivanVice ChairMinnesota Public Utilities Commission, MinnesotaPublic contactPhone(651) 201-2230Fax(651) 297-7073Trust and provenance · Commissioner profileA RegulatorIndex public-directory record. Contact and role fields come from the displayed roster source; the official commission website is provided for confirmation.Source accessedFebruary 25, 2026SourcesOfficial commission website ↗Official commission source · Minnesota Public Utilities CommissionPublic commissioner roster ↗Public commission roster · National Association of Regulatory Utility CommissionersMethodology and standardsReport a correctionCorrections are reviewed against authoritative sources before any public record changes.Other commissioners at this commissionCommissionerAudrey PartridgeMinnesota Public Utilities CommissionCommissionerHwikwon HamMinnesota Public Utilities CommissionCommissionerJohn TumaMinnesota Public Utilities CommissionChairKatie SiebenMinnesota Public Utilities Commission