Key information on our fuel mix disclosure obligation, renewable obligations and CERT information

Fuel Mix Disclosure Obligation

The Fuel Mix Disclosure obligation is a requirement on npower to provide details to customers of the mix of fuels used to produce the electricity it supplies together with certain other environmental information.

Additional environmental information required to be communicated relates to the impact of the electricity supplied in the relevant period, in terms of CO2 emissions and any radioactive waste generated from the sources used.

The fuel mix information contained in the table on the main page is presented in percentage terms to the nearest whole percentage point. There is scope to further sub-divide each category, for example to identify a particular technology or renewable source.

Sustainability obligations

Renewable Obligation (RO)

As part of the legal obligations that apply to them UK Electricity suppliers have to comply with a requirement to purchase a minimum level of electricity from renewable sources. The information on this page relates to all suppliers; the exact amount spent on environmental programmes by particular suppliers may vary from the figures shown.

These sustainability conditions may be summarised as:

Between April 2008 and March 2009 we met 64% of our obligation through ROCs, and redeemed the rest through buy-outs.

Carbon Emissions Reduction Target (CERT)

In addition, our specially trained energy efficiency advisers offered free impartial advice on ways to save energy and cut energy bills through our Freephone helpline. This helpline answered over 51,700 calls.