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CERTIFICATION OF ELECTRICITY PRODUCTION USING COGENERATION

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CERTIFICATION OF ELECTRICITY PRODUCTION USING COGENERATION

The Guarantees of Origin Issuing Body (EEGO) is responsible for issuing certificates and guarantees of origin for the electricity produced at cogeneration facilities operating under an efficient or highly efficient regime. 
 
Pursuant to Decree-Law 23/2010 of 25 March, in its current wording, the EEGO is responsible for developing and managing the system of issuing guarantees (EEGO's System), including the electronic logging, issuing, transmission and cancellation of the respective proof. The EEGO is also responsible for conducting audits and for monitoring the facilities and the production and measuring equipment that ensure the correct qualification of the facilities and the certification of origin of the power produced. 
 
The EEGO is subject to inspection by the Entidade Nacional para o Setor Energético, E.P.E. (National Entity for the Energy Sector), which publishes an annual report summarising its actions on its website.
 
Any requests for information or clarification about the certification of electricity produced by means of cogeneration may be sent to eego@ren.pt.

COGENERATION UNDER A HIGHLY EFFICIENT REGIME – GUARANTEES OF ORIGIN

Pursuant to Decree-Law 23/2010 of 25 March, in its current wording, Highly Efficient Cogeneration is understood to mean production through cogeneration wherein a primary energy saving (PES) of at least 10% is achieved in relation to the separate production of electricity and heat, as well as small-scale cogeneration and microgeneration resulting in primary energy savings. The PES is calculated on the basis of the methodology set out in the EEGO's Procedures Manual. Small-scale cogeneration is considered to be production at facilities with an installed capacity of less than 1 MW.
 
Any producer of electricity at highly efficient cogeneration facilities may ask the EEGO to issue guarantees of origin relating to the electricity produced, pursuant to Article 21 of the aforementioned decree-law. 

Pursuant to Decree-Law 23/2010 of 25 March, in its current wording, Highly Efficient Cogeneration is understood to mean production through cogeneration wherein a primary energy saving (PES) of at least 10% is achieved in relation to the separate production of electricity and heat, as well as small-scale cogeneration and microgeneration resulting in primary energy savings. The PES is calculated on the basis of the methodology set out in the EEGO's Procedures Manual. Small-scale cogeneration is considered to be production at facilities with an installed capacity of less than 1 MW.
 
Any producer of electricity at highly efficient cogeneration facilities may ask the EEGO to issue guarantees of origin relating to the electricity produced, pursuant to Article 21 of the aforementioned decree-law. 

COGENERATION UNDER AN EFFICIENT REGIME – CERTIFICATES OF ORIGIN

Pursuant to Decree-Law 23/2010 of 25 March, in its current wording, Cogeneration under an Efficient Regime is understood to mean production through cogeneration that is not classed as Highly Efficient Cogeneration and where a primary energy saving (PES) is achieved in relation to the separate production of electricity and heat. The PES is calculated on the basis of the methodology set out in the EEGO's Procedures Manual. 
 
Any producer of electricity at cogeneration facilities operating under an efficient regime, when regulated by the special form of the remunerative regime, should ask the EEGO to issue certificates of origin relating to the electricity produced, pursuant to Article 22 of the aforementioned decree-law.

AUDITS

Pursuant to Decree-Law 23/2010 of 25 March, in its current wording, the EEGO is responsible for conducting audits and monitoring cogeneration production facilities and equipment, as well as the power-measuring equipment that enables and ensures the correct qualification of the facilities and the guarantee or certification of origin of the electricity produced. The audits are conducted in accordance with the provisions set out in the EEGO's Procedures Manual.
 
Three types of audits are envisaged:

  • An initial audit, consisting of a set of checks and trials intended to confirm that the facilities transitioning to the new decree meet the applicable regulatory requirements so that the electricity produced can be certified by guarantees or certificates of origin.
  • Periodic audits, consisting of a set of checks and trials carried out periodically, pursuant to the legislation and regulations in force, and which are intended to confirm that the production facility is still meeting the applicable regulatory requirements so that the electricity produced can be certified by guarantees or certificates of origin;
  • Extraordinary audits, consisting of a set of checks and trials requested by one of the interested parties, with the aim of determining if the production facility meets, or is still meeting, the applicable regulatory requirements so that the electricity produced can be certified by guarantees or certificates of origin.
 
The audits are conducted either by the EEGO itself or by properly qualified auditors whose qualification to carry out the activity of providing auditing services for facilities producing electricity through cogeneration or from renewable energy sources is governed by the requirements set out in Law 75/2015 of 28 July. The selection process used to assign an auditor to a particular audit is based on objective, transparent and non-discriminatory criteria.

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