For electricity deposit, you should charge it to Utility Deposit account. An asset account.
For deposit received from Customers, you should charge it to Trade Depsoit Received. A liability account.
These 2 kinds of deposit is quite different and must not be mixed up. The Utility Deposits will be very inactive unless the deposit is refunded when your company is moving out. However, the Trade Deposit will be moving very fast. These amount will reduce the amount in Trade debtors as soon as invoice is issued to that customer. The time duration of this account is quite short.