In these regulations –

Act means the Gas Industry Act 2019 ;

biogas has the same meaning as in the Gas Safety Act 2019 ;

biomethane means a substance –

(a) that is in a gaseous state at standard temperature and pressure; and

(b) the principal constituent of which is methane; and

(c) that is produced from biogas;

synthetic methane means a substance –

(a) that is in a gaseous state at standard temperature and pressure; and

(b) the principal constituent of which is methane; and

(c) that is produced by the methanation of carbon dioxide.