s 23 Power to require security
23.—(1) Subject to this section, where any person requires a supply of electricity, a market support services licensee or transmission licensee may require the person, or any retail electricity licensee acting on behalf of a consumer, to give it reasonable security for the payment to it of all money which may become due to it in respect of —(a) the supply of electricity; or (b) the provision of all or any main or electrical plant, as the case may be. (2) Where any person fails to give the security required under subsection (1), the market support services licensee or the transmission licensee may, if it thinks fit, refuse to provide the supply of electricity or to provide or procure the provision of all or any main or electrical plant (as the case may be) for so long as the failure continues. (3) Where any person has not given the security under subsection (1), or the security given by that person has become invalid or insufficient —(a) the market support services licensee or the transmission licensee may by notice require that person, within 7 days after the service of the notice, to give it reasonable security for the payment of all money which may become due to the market support services licensee or the transmission licensee in respect of the supply of electricity; and (b) if that person fails to give such security, the market support services licensee or the transmission licensee may if it thinks fit discontinue the supply of electricity for so long as the failure continues.