A hybrid installation for providing electric energy from regenerative energy sources, comprising a biogas installation that provides electric energy, and at least one additional energy converter, which provides electric energy and whose releasable power is depending of external influence factors, of the wind supply and/or the sun irradiation in particular, wherein the electric energy of the biogas installation and the electric energy of the at least one additional energy converter are fed into a common mains grid, characterized in that the biogas installation features a gas turbine with an electric generator which is operated by the biogas produced in the biogas installation, and whose waste heat can be supplied to the biogas installation via a heat exchanger.