The industrial application of the cascaded HTHP clearly shows how high system efficiency (COP 2-3) for the provision of process steam can be achieved with temperature lifts above 80 K. This represents a promising and future-proof aspect for the decarbonisation potential in energy-intensive industries and can be applied to other industrial processes with minimal adjustments. The specific savings potential of the installed system on this site regarding operating costs is approximately €23 per MWh of steam, and regarding CO2 emissions, 50 kg CO2 per MWh of steam. As a result, in addition to an innovative heat pump application with direct process integration, high system efficiency, and strong decarbonisation potential in the energy-intensive paper manufacturing industry, an economic criterion is fulfilled. Due to the successful and first-time application of the heat pump technology, a solid foundation has been established for the end user (Felix Schoeller) and for the scaled-up deployment of further HTHP systems. The deployed technology actively contributes to the company’s climate targets and represents a significant milestone for a decarbonised paper industry.