TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The system comprises an ammonia hydrogen mixture, which is fluidly connected to the ammonia storage vessel, to the ammonia power generator and to the hydrogen injection system and which is configured and arranged to receive and mix ammonia from the ammonia storage vessel and hydrogen from the hydrogen injection system for form ammonia hydrogen mixture to be provided to the ammonia power generator. The hydrogen injection system comprises: a hydrogen extraction unit assigned to the stage of the system from which the hydrogen portion is extracted, where the hydrogen extraction unit enables a regulation of the portion of hydrogen to be extracted at the stage; many devices for regulating a flow of hydrogen in the hydrogen injection system and to the gas stream to be provided to ammonia power generator; a hydrogen control system for controlling a flow rate of hydrogen fromt eh stage at which the hydrogen portion is extracted into the hydrogen injection system and/or a flow rate of hydrogen from the hydrogen injection system to the gas stream to be provided to the ammonia power generator. The controlling by the hydrogen control system is based on an input data set which contains information about actual working conditions in the ammonia power generator and where the working conditions include at least one of a status of combustion in the combustion chamber, a flow rate of ammonia from ammonia storage vessel, a temperature in the combustion chamber, an actual chemical composition of a gas mixture in combustion chamber, and/or an actual chemical composition of combustion exhaust gases of ammonia power generator. The hydrogen nitrogen production unit comprises a hydrogen electrolyzer for producing the hydrogen, where the hydrogen electrolyzer is configured to receive water and energy produced by the renewable energy source and to produce the hydrogen by electrolysis and an air separation unit for producing the nitrogen, where the air separation unit is configured to receive air and energy produced by the renewable energy source and to produce the nitrogen by separating the received air. The stage at which the hydrogen portion is extracted is the hydrogen electrolyzer. The mixing unit is fluidly connected to the hydrogen nitrogen production unit to receive the hydrogen and nitrogen produced in it, where the mixing unit comprises a temporary storage system for receiving and buffering the hydrogen and the nitrogen from the hydrogen nitrogen production unit. The stage at which the hydrogen portion is extracted is the temporary storage system. The mixing unit comprises a mixer fluidly connected to the hydrogen nitrogen production unit for receiving the hydrogen and the nitrogen and for mixing the received hydrogen and nitrogen to form a hydrogen nitrogen mixture and a compressor for compressing the hydrogen nitrogen mixture from the mixer to form a compressed hydrogen nitrogen mixture to be directed to the ammonia source. The ammonia source comprises an ammonia reaction chamber configured to receive the hydrogen nitrogen mixture from the mixing unit and to process the received hydrogen nitrogen mixture to form the gas mixture containing ammonia and a separator for receiving the gas mixture containing ammonia from the ammonia reaction chamber, where the separator is configured to separate ammonia from the gas mixture containing ammona such that ammonia and a remaining hydrogen nitrogen mixture are produced and the separator is fluidly connected to the ammonia storage vessel to direct the produced ammonia to the ammonia storage vessel. The system further comprises: a re-processing unit for re-processing the remaining hydrogen nitrogen mixture with a re-compressor and a second mixer, where the re-compressor is fluidly connected to the separator to receive and compress the remaining hydrogen nitrogen mixture from the separator, the second mixer is fluidly connected to the re-compressor to receive the compressed remaining hydrogen nitrogen mixture from the re-compressor, the second mixer is fluidly connected to the mixing unit to receive the hydrogen nitrogen mixture from the mixing unit and the second mixer is configured to mix the hydrogen nitrogen mixture from the mixing unit and the compressed remaining hydrogen nitrogen mixture from the re-compressor to form the hydrogen nitrogen mixture to be provided to the ammonia source; and an energy distribution unit which is configured to receive the energy provided by the renewable energy source and to distribute the energy to the energy grid and/or to the hydrogen nitrogen production unit, where the distribution depends on an energy demand situation in the energy grid. The separator is fluidly connected to the mixing unit to direct the remaining hydrogen nitrogen mixture from the separator to the mixing unit such that the remaining hydrogen nitrogen mixture is mixed in the mixing unit with the hydrogen and the nitrogen from the hydrogen nitrogen production unit to form the hydrogen nitrogen mixture to be received by the ammonia source. The system comprises a main control unit for controlling the generation of the ammonia to be stored in the ammonia storage vessel and/or the generation of energy with the ammonia power generator. The main control unit is configured and arranged such that the controlling of the generation of the ammonia to be stored in the ammonia storage vessel and/or of the generation of energy with the ammonia power generator depends on an actual power demand in the energy grid and/or on an amount of energy currently generated by the renewable energy source. The main control unit is configured to reduce the generation of the ammonia to be stored in the ammonia storage vessel and/or increase the generation of energy during periods of low renewable energy input from the renewable energy source, to increase the generation of the ammonia to be stored in the ammonia storage vessel and/or reduce the generation of energy during periods of high renewable energy input from the renewable energy source. Preferred Method: The hydrogen control system controls a flow rate of hydrogen from the stage at which the hydrogen portion is extracted into the hydrogen injection system and/or a flow rate of hydrogen from the hydrogen injection system to be mixed with the ammonia provided from the ammonia storage vessel. The gas mixture containing ammonia is directed to a separator which separates ammonia from the gas mixture containing ammonia such that the ammonia to be stored in the ammonia storage vessel and a remaining hydrogen nitrogen mixture are produced. The remaining hydrogen nitrogen mixture is re-compressed and the re-compressed remaining hydrogen nitrogen mixture is mixed with the hydrogen nitrogen mixture from the mixing unit to form the hydrogen nitrogen mixture to be received by the ammonia source. The remaining hydrogen nitrogen mixture is mixed in the mixing unit with the hydrogen and the nitrogen from the hydrogen nitrogen production unit to form the hydrogen nitrogen mixture to be received by the ammonia source.