(1) In this section -

"Act of 1999" means the Electricity Regulation Act 1999;

"approved body of persons" has the same meaning as it has in section 235 of the Principal Act;

"billing period" means, in relation to a TBESS electricity bill or a TBESS gas bill, the invoice period or the statement period, as the case may be;

"chargeable period" has the same meaning as it has in section 321(2) of the Principal Act;

"charity" has the same meaning as it has in section 208 of the Principal Act;

"claim period" means a calendar month falling within the specified period, and each calendar month within the specified period shall be a separate claim period;

"credit institution" has the same meaning as it has in the European Union (Capital Requirements) Regulations 2014 (S.I. No. 158 of 2014);

"electricity account", in relation to an eligible business, means an account -