Yn dilyn cais am gymorth statudol o dan Fesur Llywodraeth Leol (Cymru) 2009 gan y Cynghorydd Rosemarie Harris, Arweinydd Cyngor Powys, penodwyd cynghorydd allanol, Sean Harriss, i gynnal asesiad annibynnol o'r Cyngor. Mae Sean Harriss bellach wedi cwblhau ei arolwg ac mae'r adroddiad, Adolygiad o Arweinyddiaeth, Llywodraethu, Strategaeth a Chapasiti, Ionawr 2018 ar gael drwy'r ddolen ganlynolhttp://llyw.cymru/topics/localgovernment/publications/review-leadership-governance-powys-county-council/?lang=cy
Following a request for statutory support under the Local Government (Wales) Measure 2009 from Cllr Rosemarie Harris, Leader of Powys Council, an external adviser, Sean Harriss, was appointed to carry out an independent assessment of the Council.  Sean Harriss has now completed his review and the report,Review of Leadership, Governance, Strategy and Capacity, January 2018is available via the following linkhttp://gov.wales/topics/localgovernment/publications/review-leadership-governance-powys-county-council/?lang=en