Better energy deal promised for users.
The measures from regulator Ofgem include improved information on regular bills to help consumers benefit from the competitive utilities market.
A new annual statement will detail each household's current energy plan, yearly consumption and predicted bill, any discounts that are available and advice on how to change supplier.
All households will receive an annual statement between today and December 1 depending on their supplier's billing cycle.
Ofgem spokeswoman Sarah Harrison said: "We want customers to have a much better picture of their energy consumption and how much they are spending.
"Clearer bills and annual statements will put all this information at their fingertips."