Guidance: Combined heat and power quality assurance (CHPQA) standard

CHPQA methodology, definitions, QI thresholds, and criteria for Good Quality certification.

The CHPQA Standard sets out the CHPQA methodology, definitions, QI thresholds, and criteria for ‘Good Quality’ CHP certification.

It specifies different Quality Index (QI) formulae for the purposes of determining Good Quality CHP certification and eligibility for benefits other than those from the Renewables Obligation and Contracts for Difference.

The Standard should be read in conjunction with the supporting CHPQA Guidance Notes, which provide detailed information on how this Standard will be interpreted by government departments and agencies, as well as guidance on compliance with this Standard.

The Standard should be subject to minimum change; developments in the application of the Standard will, whenever possible, be reflected in changes in the Guidance Notes.

The Standard does not address issues relating to the use of CHPQA for determining eligibility for fiscal benefits. For these matters, reference should be made to the CHPQA Guidance Notes and, where necessary, the appropriate government department.

CHPQA Standard – Issue 7 (December 2018)

CHPQA Standard Issue 7 applies to CHP schemes that have entered into a Contract for Difference (CfD).  Schemes should refer to  Guidance Note 44 (GN44) (Issue 7) when applying CHPQA  Standard Issue 7.

CHPQA Standard - Issue 6 (September 2016)

CHPQA Standard Issue 6 first applied to the 2017 certification of new Schemes based, as appropriate, on the design or operational data for the year commencing 1 January 2016.

CHPQA Standard - Issue 5 (November 2013)

CHPQA Standard Issue 5 first applied to the 2015 certification of new Schemes based, as appropriate, on the design or operational data for the year commencing 1 January 2014.

Which CHPQA Standard Quality Index formulae to use