According to Hydro One 's latest financial reports the company's current revenue (TTM ) is £4.64 Billion. In 2023 the company made a revenue of £4.59 Billion a decrease over the revenue in the year 2022 that were of £4.89 Billion. The revenue is the total amount of income that a company generates by the sale of goods or services. Unlike with the earnings no expenses are subtracted.