Published Date: 02 Dec 2020

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    Electricity & Gas

Certification Process for High Efficiency Combined Heat and Power

S.I. No. 299 of 2009 appointed the Commission for Regulation of Utilities (CRU) to calculate and certify the actual power-to-heat ratios of the cogeneration technologies specified in Annex 1 to Directive 2004/8/EC. Under S.I. No. 499 of 2009 the CRU was also obliged to calculate the relative amount of primary energy savings for CHP plants.

 In March 2012 the CRU published its decision paper (CER/12/125) setting out the standardised process for applications from generators to be assessed by the CRU for certification as HE CHP. The certification process is designed to ensure that the plant meets the high efficiency criteria set out in legislation.

The CRU has since published a number of clarification notes on matters relating to HE CHP assessment and certifications.

Today 02 December 2020, the CRU is publishing a clarification note regarding the Anaerobic Digestion (AD) useful heat assessment of useful heat in AD facilities.

Please note that this clarification should be read in conjunction with CRU documents CER/12/125, CER/12/184 and CER/16/153, CRU/17/302, CRU/17/303.

Queries on the HE CHP certification should be sent to

Contact Name:
Mantas Vencius
Contact Email:


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CRU20142 High Efficiency CHP Clarification Note on Anaerobic Digestion Useful Heat



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Clarification note – HE CHP assessments where there are two or more units on a single site


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Clarification note on the assessment of sorption chillers in the certification process for High Efficiency CHP


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CER16153 HECHP Information Note Primary Energy Savings


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Certification Process for High Energy CHP - Consultation Paper


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Assessment of Useful Heat for HECHP Clarification Note