For the purposes of this Chapter—

• “arrangement benefit” has the meaning given in regulation 49(1)(a);

• “balancing services” means a customer varying its consumption of energy in order to provide a service—

  1. a

     to a person holding a transmission licence, in connection with the balancing of flows of electricity onto and off a transmission system, or

  2. b

     to a gas transporter, in connection with the balancing of flows of gas into and out of a pipe-line system;

• “Chapter 1 arrangement” means an arrangement of the kind described in regulation 47(1)(b);

• “contract financial exposure” has the meaning given in regulation 47(1)(b);

• a “declaration period” is the period between the initial declaration date and the first periodic declaration date, or between a later periodic declaration date and the next periodic declaration date;

• “effective financial exposure” has the meaning given in regulation 47(1)(b);

• the “initial declaration date” in respect of a supply contract is—

  1. a

     the scheme introduction date, if on that date the customer has made a Chapter 1 arrangement and is party to the supply contract;

  2. b

     in any other case, the date on which the customer—

     1. i

        enters into the supply contract, having already made a Chapter 1 arrangement, or

     2. ii

        makes a Chapter 1 arrangement, being already a party to the supply contract;

• “periodic declaration dates” are dates chosen by the supplier, falling at intervals of not more than 31 days, of which the first must be not more than 31 days after the initial declaration date and the last must be the last day of the second scheme period.

In paragraph (1)(b)—

• “gas transporter” and “pipe-line system” have the meanings given to them in the Gas (Northern Ireland) Order199618;

• “transmission licence” and “transmission system” have the meanings given to them in the Electricity Act (Northern Ireland) Order 199219.