The Purpose Of The Contract Is To Carry Out The Individualized Annual Analysis Of The Electricity Production Facilities Of The Old Special Regime In Catalonia (Currently, From Renewable Energy Sources, Cogeneration And Waste), Gathering The Evolution Of The Activity Of These Facilities Based On Their Operating Parameters, So That It Allows To Know The Indicators That Characterize This Regime Of Electricity Production And Analyze Their Evolution. The Statistics Of Electricity Production Of The Old Special Regime And Isolated Installations Is An Essential Tool For The Preparation Of The Energy Statistics Of Catalonia, Which Are Hosted By Law 5/2016, Of December 23, Of The Statistical Plan Of Catalonia 2017-2020 And Of Modification Of The Law 23/1998, Of December 30, Of Statistics Of Catalonia (2025). Instrument Of Planning And Planning Of The Statistics Of The Country.