The 132kV substation at the Sagamu Industrial Park was constructed with one 132kV outgoing line and two 10kV outgoing lines. Overhead lines were laid along the route to the park and then within the park to ensure that all plots had access to power. Subsystem commissioning, a crucial step before the substation's commissioning, encompassed electrical equipment performance testing, relay protection device calibration, and verification of communications and integrated automation systems. This verification aimed to verify the functional stability and interoperability of each subsystem.

The commissioning work was carried out in two phases, progressing incrementally in conjunction with on-site installation work, shortening the project schedule for the client.

In the first phase, in November 2024, commissioning personnel focused on primary equipment and auxiliary systems, inspecting all electrical systems and rectifying issues such as disorganized cabling and improper wiring in the control cabinets. During this phase, all electrical equipment undergoes a thorough inspection to confirm that the equipment's exterior is free of contamination, the SF6 gas pressure in the GIS equipment is normal, the CVT oil level is visible within the visual window and there is no leakage. The circuit from the terminal box to the control panel in the junction box is tested, and the relay protection devices are verified. Primary equipment commissioning primarily includes transformer insulation testing, dielectric loss factor testing of the insulation system, DC resistance testing of circuit breakers and disconnectors, and polarity checks of transformers. Before testing, commissioning personnel are informed of potential hazards and safety precautions. After each test, they verify that remote and local manual operation of the switches is functioning properly, that mechanical interlocking relationships are correct, and that protection signals and backend computer displays are correct.

In the second phase, commissioning personnel will return to the site in July 2025, at the client's discretion. Following the installation of the 10kV outgoing line cement-based poles, the line will be rectified and faults in the installed line equipment will be corrected. Following these faults, the transmission line will undergo a handover test in sections. All on-site commissioning work will adhere to the requirements of "Anti-Three Violations and Prevent-Five Classifications."

On August 1, 2025, all commissioning work was completed, and the Sagamu Industrial Park substation system power supply and line load tests were successfully passed, marking that all systems of this substation were officially put into operation.