Thanks for your feedback. At the moment, you can't get a forecast of your bill online but we're really keen to help customers keep an eye on how much energy they're using so we've launched Energy Tracker: https://customerservices.npower.com/app/answers/detail/a_id/285/session/L3NpZC9iUlVpZGdlaw%3D%3D/kw/Energy%20Tracker/r_id/166/sno/0
Don't forget, you can help make sure you always pay just the right amount by activating our meter read reminder service: https://customerservices.npower.com/app/answers/detail/a_id/201/kw/meter%20read%20reminder/r_id/166, so you only pay for what you use.