Guidance

CHPQA unit list

This CHP unit list provides 'specs' so small engine-based CHP schemes can check their performance against the design performance of the relevant unit.

• From: Department for Energy Security and Net Zero
• Published: 1 September 2021
• Last updated: 26 March 2026
  Show all updates

  1. 26 March 2026

     Updated 2026 to align with the CHPQA Portal now hosted on GOV.UK.

  2. 1 September 2021

     First published.

Documents

CHPQA unit list

PDF, 245 KB, 6 pages

Details

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.

It is not intended to be:

• a list of approved or certified CHP units
• a means for gaining endorsement or approval