This Order may be cited as the Electricity and Gas (Energy Efficiency Obligations) Order 2004 and shall come into force on the day after the day on which it is made.

In this Order—

• “domestic consumer” means a person who uses coal, electricity, gas, liquid petroleum gas or oil at domestic premises in Great Britain wholly or mainly for domestic purposes;

• “domestic customer” means an owner or occupier of domestic premises in Great Britain who is supplied with electricity or gas at those premises wholly or mainly for domestic purposes;

• “energy efficiency” includes efficiency in the use by consumers of coal, liquid petroleum gas or oil;

• “fuel-standardised” means, in respect of an improvement in energy efficiency, the number of kilowatt hours4 of improvement multiplied–

  1. i

     where the source of energy is coal, by 0.557;

  2. ii

     where the source of energy is electricity, by 0.801;

  3. iii

     where the source of energy is gas, by 0.353;

  4. iv

     where the source of energy is liquid petroleum gas, by 0.398; or

  5. v

     where the source of energy is oil, by 0.464;

• “lifetime-discounted” means, in respect of an improvement in energy efficiency, the number of kilowatt hours of improvement discounted by 3.5% a year over its lifetime (as estimated by the Authority under article 6(1)(a)(ii));

• “supplier” means an electricity supplier or a gas supplier who supplies at least 50,000 domestic customers (including those supplied by his holding company or subsidiary or by any subsidiary of such a holding company, where “holding company” and “subsidiary” have the same meaning as in section 736 of the Companies Act 19855);

• “priority group” means persons–

  1. i

     who are in receipt of at least one of the benefits described in paragraph 2 of the Schedule to this Order; or

  2. ii

     who are in receipt of at least one of the credits described in paragraph 3 of that Schedule and whose relevant income is £14,600 or less (where “relevant income” has the same meaning as in Part 1 of the Tax Credits Act 20026); and

• “qualifying action” means an action determined by the Authority under article 5(1)(b) as promoting an improvement in energy efficiency.