If you have flickering lights, there could be many reasons for this problem.
It’s important that the problem is identified quickly before a serious situation occurs.
One reason that lights flicker on and off is that the power level is changing. If the circuits are being overloaded a bit, your lights will flicker. There might be a problem in your wiring.
An appliance might be the culprit if it is drawing too much power because of a faulty motor.
Flickering lights might be a simple fix or a more serious problem. In any case, it’s important to call upon the services of a professional, licensed and insured electrician.