Provincial interest refers to situations where broader provincial concerns override local municipal decision-making, particularly in land use planning. Provinces may declare provincial interest in matters affecting multiple municipalities, environmental protection, major infrastructure, or economic development. When provincial interest is invoked, municipalities may be required to conform their plans to provincial policy or have their decisions overridden. Examples include protecting agricultural land, ensuring transit-oriented development, or siting major facilities. Provincial interest provisions recognize that some local decisions have impacts beyond municipal boundaries, though their use can create tensions with local autonomy principles.