The purpose of this procedure is to enter into a contract for the purchase and sale of electricity from long-term renewable sources in favour of this Administration, to be carried out in accordance with the requirements set out in the Technical Specifications and its annexes.

The supply contract provides for two different time periods: a first called "transitional" or "bridge", in which the supply of electricity is certified green through Guarantee of Origin (GO) and may also come from production plants from renewable sources that are not newly built or subject to renovation and a second called "operational", in which the supply of electricity is divided into a share certified as coming from plants from renewable sources. renewable, newly installed or subject to refurbishment, defined as the "PPA Quota", the supply relating to the PPA Quota must be certified by means of a Guarantee of Origin (GO) in order to certify the origin of the plant(s) newly built or subject to refurbishment, specifically indicated as specified in these Specifications, in the Technical Specifications and in the contract scheme. A quota, called "Market Share", complementary to the PPA Share, which may come from renewable source production plants that are not newly built or undergoing refurbishment, but which must always be certified by GO.