Patrick has conducted research and analysis for regulatory and rate reviews of electric, gas, and water utilities in seven Canadian provinces and territories covering over 25 years. This included preparing evidence and expert testimony for regulatory hearings, and assisting in utility capital and operations planning to assess the impact on rates and long-term rate stability. He has provided expert testimony before the Manitoba Public Utilities Board, the Northwest Territories Public Utilities Board, the Yukon Utilities Board, and the Mackenzie Valley Water Board, the Newfoundland and Labrador Board of Commissioners of Public Utilities, the Alberta Utilities Commission and the Nunavut Utility Rates Review Council, as well as before municipal governments. In total, he has participated in over 40 regulatory proceedings as an expert consultant in utility regulation, including providing case management support during regulatory review processes. In addition to participating in regulatory proceedings, Patrick has advised governments on the establishment of utility and energy policy, including the role and function of regulatory commissions, in a number of Canadian jurisdictions, including Manitoba (provincial), NWT (territorial) and Alberta (municipal).

For municipal utilities, Patrick has acted for both municipal “in-house” utility operators (Nelson Hydro, Swift Current) and for municipal governments who have established and must now supervise and regulate the actions of wholly-owned utility providers (City of Chestermere, Chestermere Utilities Inc.). This includes advice and recommendations regarding the preparation of efficient and practical regulatory filings and the establishment of a new regulatory rate review mechanism for municipal utility corporations.

Patrick was also the lead consultant on the cost of service, feasibility, and utility operation studies and initiatives to create a tribally-owned utility operator in northern Arizona (Hualapai Tribal Utilities Authority (HTUA)). This includes interactions with power markets (federal power agencies, investor-owned utilities, cooperatives) in the local area to address power supply and development, as well as asset transfer.