How has the white certificate system evolved over the last year? Auction mechanism: what does the Ministry of Ecological Transition Decree of May 2021 provide for? Livio De Chicchis, the expert from FIRE (the Italian Federation for the Rational Use of Energy) helps us answer these questions, who reaffirms that the guidelines for cogeneration remain unchanged and the mechanism is working. Any repercussions on this system will only occur if the prices of white certificates undergo changes.