Combined heat and power quality assurance (CHPQA) guidance notes
Certification for good quality combined heat and power (CHP).
Simple guides to CHPQA
This series of short, simplified guides is aimed at those new to the programme, or who need a quick refresher on key topics.
CHPQA guidance notes
The guidance notes help and guide applicants in completing the required forms and in carrying out self-assessment of their combined heat and power (CHP) schemes. They may be updated from time to time and the latest version of each notes and form will be available on the website.
The CHPQA Guidance Notes are structured as follows:
- GN0 to GN9: Introduction
- GN10 to GN16: Scheme Details and Thresholds
- GN17 to GN29: CHPQA Analysis
- GN30 to GN39: Treatment of Special Cases
- GN40 to GN49: Uses for CHPQA
- GN50: Quantifying And Justifying Useful Heat Outputs
- GN60: Temporary COVID-19 Easement
Read the guidance notes in conjunction with the CHPQA Standard, which sets out definitions, criteria and methodologies for the operation of CHPQA. The guidance notes provide detailed information on how the Standard will be interpreted by government departments and agencies as well as guidance on compliance with the Standard. They include a number of worked examples.
| Guidance Note | Summary |
|---|---|
| GUIDANCE NOTE 0 | Introduction to the CHPQA Guidance Notes Information |
| GUIDANCE NOTE 1 | CHPQA Application for Registration (Form F1) |
| GUIDANCE NOTE 2 | CHP Scheme Description (Form F2) Information |
| GUIDANCE NOTE 2s | CHP Scheme Description (Form F2(S)) Information |
| GUIDANCE NOTE 3 | Self-Assessment for Proposed New and Upgraded CHP Schemes (Form F3) Information |
| GUIDANCE NOTE 3s | Self Assessment of Proposed New CHP Schemes (Form F3(S)) Information |
| GUIDANCE NOTE 4 | Self-Assessment for Existing Schemes (Form F4) Information |
| GUIDANCE NOTE 4s | Self-Assessment for Existing Schemes (Form F4(S)) Information |
| GUIDANCE NOTE 10 | Defining Good Quality CHP Information |
| GUIDANCE NOTE 11 | CHP Scheme Definition Information |
| GUIDANCE NOTE 12 | CHP Scheme Description Information |
| GUIDANCE NOTE 13 | CHP Scheme Monitoring Information |
| GUIDANCE NOTE 14 | CHP Scheme Energy Inputs Information |
| GUIDANCE NOTE 15 | CHP Scheme Power Outputs Information |
| GUIDANCE NOTE 16 | CHP Scheme Heat Outputs Information |
| GUIDANCE NOTE 17 | Uncertainty in Metered Inputs and Outputs |
| GUIDANCE NOTE 18 | Uncertainty in Calculated Energy Inputs and Outputs |
| GUIDANCE NOTE 19 | Adjustment of Energy Inputs and Outputs for Excessive Uncertainty |
| GUIDANCE NOTE 20 | Indirect Determination of Energy Inputs Information |
| GUIDANCE NOTE 21 | Indirect Determination of Heat Outputs Information |
| GUIDANCE NOTE 22 | Indirect Determination of Mechanical Power Outputs Information |
| GUIDANCE NOTE 23 | Correction of Bias in Inputs and Outputs Information |
| GUIDANCE NOTE 24 | Determination of Scheme Quality Information |
| GUIDANCE NOTE 25 | Determination of CHP Qualifying Fuel Input Information |
| GUIDANCE NOTE 26 | Determination of CHP Qualifying Power Output Information |
| GUIDANCE NOTE 27 | Determination of CHP Qualifying Power Capacity Information |
| GUIDANCE NOTE 28 | The Determination of Z Ratio Information |
| GUIDANCE NOTE 29 | Alternative Fuels - Energy Inputs |
| GUIDANCE NOTE 30 | CHP Serving Community Heating Information |
| GUIDANCE NOTE 31 | CHP Schemes Less Than 2MWe |
| GUIDANCE NOTE 41 | Use of CHPQA to Obtain Exemption from CCL and Relief from Fuel Duty (Including On Supplies Subject To Carbon Price Support (CPS) Rates of CCL and Fuel Duty) |
| GUIDANCE NOTE 43 | Use of CHPQA to Obtain Exemption from Business Rating of CHP Plant and Machinery |
| GUIDANCE NOTE 44 Issue 4 | Use Of CHPQA To Obtain Support Under The Renewables Obligation - for Schemes that were operational and certified prior to 26 July 2012 |
| GUIDANCE NOTE 44 Issue 5 | Use Of CHPQA To Qualify For Contracts For Difference Support - for Renewable Obligation Schemes certified prior to 1 January 2016, that were not operational before 26 July 2012 and for Contracts for Difference contracts entered into before the publication of Issue 6 of this Guidance Note |
| GUIDANCE NOTE 44 Issue 6 | Use of CHPQA in respect of the Renewables Obligation and Contracts for Difference - for Renewable Obligation Schemes not certified prior to 1 January 2016 and Contracts for Difference contracts entered into after the publication of this Guidance Note |
| GUIDANCE NOTE 44 Issue 7 | Use of CHPQA in respect of the Renewables Obligation and Contracts for Difference - for Renewable Obligation Schemes not certified prior to 1 January 2016 and Contracts for Difference contracts entered into after the publication of this Guidance Note |
| GUIDANCE NOTE 50 | Quantifying And Justifying Useful Heat Outputs |
| GUIDANCE NOTE 60 | Temporary COVID-19 Easement |
| GUIDANCE NOTE 61 | Reporting of Fiscal Benefits Gained from CHPQA Certification |
| Appendix 1 | Example 1 - a Simple Small-Scale CHP Scheme Information |
| Appendix 2 | Example 2 - a CCGT Scheme with Mixed Fuels Information |
| Appendix 3 | Example 3 - Determination of Useful Heat Output by Direct Use of Gas Turbine (or Engine) Exhaust Gases |
| Appendix 4 | Example 4 - Determination of Z-Ratio by Plant Performance Test |
| Generic Scheme Energy Flow Diagrams | Generic Scheme Energy Flow Diagrams |
| Summary of Standards | Summary of Standards |
| Glossary | Glossary of terms |
| CHPQA CHP Unit List (Specs’ for CHP’s <500KWe) | CHPQA Unit list allows small engine based CHP schemes (<500 kWe) to check their performance against the design performance of the relevant unit and under specified conditions to use the efficiency information in estimating the fuel input and/or heat output on their CHPQA submission. |
| Version Control Index | The Guidance Notes version date |
Use of CHPQA to obtain Enhanced Capital Allowances
Updates to this page
Published 1 July 2014Last updated 8 February 2022 + show all updates
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Uploaded new guidance note 61 on reporting fiscal benefits value to CHPQA
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Link added to Guidance Note 60: Temporary COVID-19 Easement.
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Added four new simple guides to CHPQA on eligibility, monitoring, uncertainty, and good quality CHP and the quality index.
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BEIS contact in the Simple Guide to the CHP Quality Assurance Programme updated to Hannah Taylor: hannah.taylor@beis.gov.uk
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Revised CHPQA simple guide with new contact details.
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Guidance Note 44 (Issue 7) and Guidance Note 50 are published
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Guidance Note 44 Issue 6 is released
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GUIDANCE_NOTE_44_Issue_5 uploaded
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First published.