Guarantees of Origin are electronic documents which provide end consumers with proof that a given amount of power was produced using a certain type of technology. Currently, three variants of these documents are envisaged, certifying the following types of power:

• Electricity produced from renewable energy sources;
• Power for heating and cooling produced from renewable energy sources;
• Electricity produced at cogeneration facilities with an efficient or highly efficient operating regime.

The entity responsible for issuing Guarantees of Origin in Portugal is REN, and it is linked with the other European countries through the AIB- Association of Issuing Bodies, enabling the import and export of Guarantees of Origin.

In Portugal, where more than half of the electricity consumed is produced from renewable sources, Guarantees of Origin play an important role in promoting the production of renewable energy, thus being a "guarantee" for a greener and more sustainable planet.

By using Guarantees of Origin we are contributing to a greener and more sustainable planet. It enable companies to show concern about climate change and to contribute to increasing employee and customers satisfaction, and consumers to assert their social responsibility and have more power and more impact on the energy transition.

For more information, send an e-mail to the EEGO at the following address: eego@ren.pt.