Ordinary producers: are entities holding electricity production licenses whose activity is not covered by a special legal regime, with incentives for the use of endogenous and renewable resources or for the combined production of heat and electricity (cogeneration).

Producers under special regime: they are entities holding electricity production licenses, granted under specific legal regimes, in the framework of the adoption of policies to encourage the production of electricity through the use of renewable resources or of technologies of combined heat production and electricity (cogeneration).