Voltage fluctuations and other disturbances can cause flickering lights and more serious problems. You can protect the electronics in your home by using a surge protector power bar. It works by limiting the voltage supplied to an electric device by either blocking or shorting to ground any unwanted voltages above a safe threshold.
To fully understand your responsibility to protect your home from external voltage disturbances, please see section 2.3.3. in our Conditions of Service.