Individuals may find it easier to compare energy prices in the future, as Ofgem has published its proposals for simplifying the market.
These include requiring gas and electricity suppliers to introduce a simple no-frills tariff with a standing charge set by the regulator and a basic unit price.
Customers will also have the option of deals that offer protection against future price rises.
Chief executive of Ofgem Alistair Buchanan said it is encouraging that providers such as British Gas, E.ON and SSE have already begun to take steps to make their product offerings less complex.
He added: "Ofgem is now calling on all suppliers to back its reform programme, which gives energy suppliers a chance to draw a line under the past and an opportunity to restore consumer trust."
The plans were welcomed by chief executive of Citizens Advice Gillian Guy, who said companies must act quickly to implement the reforms.
Make sure you're not paying too much for your energy - compare gas and electricity prices now at energyhelpline.com or call 0800 074 0745