Which version is grammatically correct and appropriate one?

Please note that we will be performing electrical work at our office new extension tomorrow, and we will work from 11 am to 6 pm. During this time, the power supply in the offices on the ground floor area will be interrupted.

Please note that we will be carrying out the electrical work at our office new extension tomorrow, and we will work from 11 am to 6 pm. During this time, the power supply in the offices on the ground floor area will be interrupted.

Please be advised that tomorrow, there will be electrical work at our office new extension, and we will work from 11 am to 6 pm. During this time, the power supply in the offices on the ground floor area will be interrupted.