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Bills sent out before 31 March 2014

For information on bills sent out before 31 March 2014, you can use our interactive guides.

What costs make up your bill

What makes up your bill?

A lot happens behind the scenes to get energy into your home. Our diagrams show how your energy bill is made up.

Watch video: How Changes to the Energy Industry Will Benefit You

Retail market review

How changes to the energy industry will benefit you