Power plant for generating electrical power, having - a reformer unit , in which an energy carrier can be converted, with the supply of heat, into a combustion fluid, - a reformer burning device , in which, to provide a heat supply for the reformer unit , an energy carrier can be burned, - a power generator , which comprises a diesel generator or a turbine generator unit and is configured to burn a combustion fluid and generate electrical power with it, - wherein the power generator comprises power output lines for the purpose of outputting generated electrical energy to an external power network, characterised in that - an electrolysis apparatus is provided, which has a power receiving connection for receiving electrical energy from an external power network , - the electrolysis apparatus is configured, for the purpose of chemical energy storage, to obtain from one or a plurality of starting materials, in particular from water, one or a plurality of products, in particular H 2 and O 2 , using the electrical energy taken up, - a connection line extends from the electrolysis apparatus to the power generator and the power generator is configured to burn one of the products of the electrolysis apparatus , and / or - a burning device line is provided, with which a product produced through electrolysis can be conveyed from the electrolysis apparatus to the reformer burning device and burned by the reformer burning device , wherein energy can be released from the product and used to generate electrical power, - with the power output lines electrical power generated via the combustion fluid and via the products produced through electrolysis can be supplied to an external power network . - a reformer unit , in which an energy carrier can be converted, with the supply of heat, into a combustion fluid, - a reformer burning device , in which, to provide a heat supply for the reformer unit , an energy carrier can be burned, - a power generator , which comprises a diesel generator or a turbine generator unit and is configured to burn a combustion fluid and generate electrical power with it, - wherein the power generator comprises power output lines for the purpose of outputting generated electrical energy to an external power network, - an electrolysis apparatus is provided, which has a power receiving connection for receiving electrical energy from an external power network , - the electrolysis apparatus is configured, for the purpose of chemical energy storage, to obtain from one or a plurality of starting materials, in particular from water, one or a plurality of products, in particular H 2 and O 2 , using the electrical energy taken up, - a connection line extends from the electrolysis apparatus to the power generator and the power generator is configured to burn one of the products of the electrolysis apparatus , and / or - a burning device line is provided, with which a product produced through electrolysis can be conveyed from the electrolysis apparatus to the reformer burning device and burned by the reformer burning device , wherein energy can be released from the product and used to generate electrical power, - with the power output lines electrical power generated via the combustion fluid and via the products produced through electrolysis can be supplied to an external power network . <EOS>