Meaning of 'combined heat and power station' (CHP), etc
In the CCL rules a 'combined heat and power (CHP) station' is a station producing electricity or motive power that is (or may be) operated for purposes including the supply of heat produced in association with electricity or motive power, or steam produced from, or air or water heated by, such heat1.
A 'fully exempt CHP station' is a CHP station for which there is in force a 'full-exemption certificate', given by the Secretary of State, stating that the station is a fully exempt CHP station for CCL, and stating the percentage that, for the exemption of supplies (other than self-supplies) to CHP stations, is the efficiency percentage for the station determined under any regulations, and (so far as applicable) any provision made thereby about certificates, applications for certificates and the information that is to accompany an applications2.
A 'partly exempt CHP station' is a CHP station for which there is in force a 'part-exemption certificate', given by the Secretary of State, stating that the station is a partly exempt CHP station for CCL, and that it complies with these regulations3.
The Secretary of State must give a full-exemption certificate for a CHP station where an application is made for a certificate for the station, and it appears to him that such conditions as prescribed by the Treasury are satisfied for the station4. In prescribing conditions in relation to the giving of a full-exemption certificate for a CHP