Hydro One Limited is the largest electricity transmission and distribution provider in Ontario, Canada, operating as a pure-play utility with no power generation assets. The company's business model is fully rate-regulated, providing stable and predictable cash flows overseen by the Ontario Energy Board (OEB). Hydro One operates through three main segments: Transmission, Distribution, and Other. The Transmission segment accounts for the majority of Ontario's high-voltage transmission grid, transmitting electricity from generating stations to local distribution companies and large industrial customers. The Distribution segment operates the largest local distribution network in the province, delivering electricity directly to approximately 1.5 million residential, commercial, and industrial customers, particularly in rural and remote areas. The company's revenue is primarily derived from regulated transmission and distribution tariffs, which represent 99% of its overall business. Hydro One's competitive position is underpinned by its massive infrastructure footprint, which includes over 30,000 circuit kilometers of high-voltage transmission lines and 123,000 circuit kilometers of distribution lines. The Province of Ontario remains the company's largest shareholder, holding a significant equity stake following its partial privatization and initial public offering in 2015. The company continues to invest heavily in grid modernization, reliability, and expanding its infrastructure to meet Ontario's growing electricity demands.
