The answer to 'why is my electrical meter buzzing noise' is that a buzzing sound from your electrical meter is often caused by a problem with the meter itself or the electrical system it is connected to. This could be due to loose connections, a faulty meter, or issues with the power supply.
Some common causes of a buzzing electrical meter include a failing meter, a problem with the meter socket, loose wiring connections, or issues with the home's electrical panel or service. The buzzing sound may indicate a problem that requires professional attention to diagnose and resolve.