Ontario Power Authority
The Ontario Power Authority (OPA) plays a unique role in Ontario’s electricity sector. We coordinate province-wide conservation efforts, plan the electricity system for the long term, and contract for clean electricity resources. We do this by working closely with our industry partners and a broad range of stakeholders across the province.
Together, we are transforming Ontario’s electricity system by helping to reduce energy use, maintain reliability, and establish a clean, modern and cost-effective power grid for a sustainable future.
Hydro One is Ontario’s largest electricity company, owning and operating substantially all of Ontario’s electricity transmission system, accounting for about 96% of Ontario’s transmission capacity.