Telegram is a service like Whatsapp but with a lot more features including programs called bots which can be programmed to respond to queries.
The Kenyapowerbot for example allows you to input your post-paid account number and get your bill instantly.
You can access the @KenyaPowerBot at https://telegram.me/KenyaPowerBot
Once there, you select whether your query is for pre-paid or post paid service.
A home menu as shown appears from which you select your query.
For query on pre-paid services, like like Token loaded. you will need to input your 11 digit meter number.
For post-paid customers, to get your post paid bill you will be prompted to input your account number and the balance will be sent back promptly.
Telegram bots operate using commands that begin with a back slash "/".
To get the list of commands you simply type /help
You can create your own Telegram bot by visiting the Botfather for registration and referring to the Telegram Bot Application Programming Interface (API) manual.