Like other policy subsectors, power generation has been affected by the governance changes of the last two decades, including a shift to more collaborative state-society relations. Collaborative governance implies new kinds of public engagement designed to provide both input legitimacy, through the involvement of a broader range of actors in policy design, and output legitimacy, through enhanced feedback and policy learning. This paper compares the impact of “governance-driven engagement” in the power generation subsectors in Nova Scotia and Saskatchewan, arguing that engagement increased the complexity of the policy mix in the subsector without succeeding in providing better feedback and learning. The paper notes a recent trend towards more expert-driven and less collaborative processes, as both provinces struggled to rationalize and simplify power generation policy goals and instruments.