Hunter Substation Replacement Project

At Riverside Public Utilities (RPU), our commitment is to continuously enhance the service we provide to you. With this mission in mind, we are excited to announce the Hunter Substation Replacement Project. This project aims to address the reliability and capacity challenges of the current, aging Hunter Substation by proposing its retirement and the construction of a modernized substation. The new, state-of-the-art substation is planned to be constructed on an adjacent lot, purchased by RPU in 2018, ensuring a seamless transition in service.

Located at 1731 Marlborough Avenue in Riverside, CA 92507, the original Hunter Substation was established in the early 1960s. It currently serves around 4,700 customers, including both residential and business users in the Hunter Industrial Park, Northside communities, and University neighborhoods near the 215/60/91 Freeway interchange.

The existing facility includes four 69,000 volts sub-transmission lines, twelve 12,000 volts distribution circuits, and three 4,000 volts distribution circuits. The new Hunter Substation is designed to improve system reliability and support growing power demands and support regional development initiatives. The upgraded facility will operate at 69,000 Volts to 12,000 Volts (69kV/12kV), increasing the number of 12kV distribution circuits to 20. This expansion is designed to manage future power requirements, further the conversion of 4kV circuits to 12kV, and relieve the existing load on neighboring Riverside and University substations, thereby ensuring a robust and reliable power supply for our community.