Voltage Reduction Test
In an effort to test the resiliency of our electrical grid, the IESO will be performing a mandatory voltage reduction test on Tuesday, January 21, 2025, and will be conducted as follows:
- 3% voltage reduction: 09:00 - 10:00 EST
- 5% voltage reduction: 13:00 - 14:00 EST
Voltage reductions are a part of routine system testing and have minimal or no noticeable impact on the general public. There is a possibility of a slight dimming of the lights for some customers but it’s important to note that these reductions are well within industry standards for electrical equipment used by residential, commercial and industrial customers.
For more information on voltage reduction tests, please visit https://www.ieso.ca/Sector-Participants/System-Reliability/Voltage-Reductions.
January 14th, 2025