No, you can no longer login to your Npower account. E.ON Next online cannot move your Npower password over to your E.ON account, but your email username will remain the same. E.ON has a dedicated section help on their site - https://www.eonnext.com/help/npower - where you can set up your new password to login to E.ON Next; view and download your Npower bills, Npower meter readings, email communications, and tariffs and prices.