System for providing energy (1", 1''') for an energy grid based on energy provided by a renewable energy source, comprising - an H2-N2-production unit for producing Hydrogen and Nitrogen, wherein the H2-N2-production unit is operated by using energy provided by the renewable energy source, - a mixing unit configured to receive and mix the Hydrogen and the Nitrogen produced by the H2-N2-production unit to form a Hydrogen-Nitrogen-mixture, - an NH3 source for receiving and processing the Hydrogen-Nitrogen-mixture for generating a gas mixture containing NH3, wherein the NH3 source comprises an NH3 storage vessel for storing at least a part of the NH3 of the gas mixture containing NH3, - an NH3 power generator for generating energy (1"') for the energy grid, wherein the NH3 power generator is fluidly connected to the NH3 storage vessel to receive a gas stream containing NH3 from the NH3 storage vessel and wherein the NH3 power generator comprises a combustion chamber to combust the received NH3 of the gas stream to generate the energy (1"') for the energy grid, wherein the system further comprises - a Hydrogen injection system for extracting a Hydrogen portion from a stage (21, 31) of the system and for adding extracted Hydrogen to the gas stream to be provided to the NH3 power generator, the Hydrogen injection system comprising a Hydrogen control system for controlling a flow rate of Hydrogen from the Hydrogen injection system to the gas stream to be provided to the NH3 power generator, wherein the controlling by the Hydrogen control system is based on an input data set which contains information about actual working conditions in the NH3 power generator and wherein the working conditions include at least one of - a status of combustion in the combustion chamber, - a flow rate of NH3 from the NH3 storage vessel, - a temperature in the combustion chamber, - an actual chemical composition of a gas mixture in the combustion chamber, and/or - an actual chemical composition of combustion exhaust gases of the NH3 power generator, characterized in that the Hydrogen control system is further for controlling a flow rate of Hydrogen from the stage (21, 31) at which the H2 portion is extracted into the Hydrogen injection system, and in that the Hydrogen injection system comprises a Hydrogen extraction unit (85, 86) assigned to the stage (21, 31) of the system from which the Hydrogen portion is extracted, wherein the Hydrogen extraction unit (85, 86) enables a regulation of the portion of Hydrogen to be extracted at the stage (21, 31). - an H2-N2-production unit for producing Hydrogen and Nitrogen, wherein the H2-N2-production unit is operated by using energy provided by the renewable energy source, - a mixing unit configured to receive and mix the Hydrogen and the Nitrogen produced by the H2-N2-production unit to form a Hydrogen-Nitrogen-mixture, - an NH3 source for receiving and processing the Hydrogen-Nitrogen-mixture for generating a gas mixture containing NH3, wherein the NH3 source comprises an NH3 storage vessel for storing at least a part of the NH3 of the gas mixture containing NH3, - an NH3 power generator for generating energy (1"') for the energy grid, wherein the NH3 power generator is fluidly connected to the NH3 storage vessel to receive a gas stream containing NH3 from the NH3 storage vessel and wherein the NH3 power generator comprises a combustion chamber to combust the received NH3 of the gas stream to generate the energy (1"') for the energy grid, - a Hydrogen injection system for extracting a Hydrogen portion from a stage (21, 31) of the system and for adding extracted Hydrogen to the gas stream to be provided to the NH3 power generator, - a status of combustion in the combustion chamber, - a flow rate of NH3 from the NH3 storage vessel, - a temperature in the combustion chamber, - an actual chemical composition of a gas mixture in the combustion chamber, and/or - an actual chemical composition of combustion exhaust gases of the NH3 power generator,