The aim of this paper is to review energy-efficient integration applications of vapour-compression heat pumps for various industries and processes based on the Grand Composite Curve (GCC) and to demonstrate its savings potential. A method was applied to directly deduce the integration parameters from the GCC by Coefficient of Performance (COP) curves. This approach has been applied to various case study data. Typical integration concepts are presented graphically and evaluated quantitatively using the COP. For a system efficient application, the heat pump must be integrated across the pinch. In particular, the food, paper, electroplating, metalworking and chemical industries are suited for heat pump integration with their unit operations of cooling, bathing and process heating, domestic hot water (DHW), drying and space heating. Their integration concepts show COPs from 2.2 to 5.8 with temperature lifts from 32.5 to 102 K and cover 23 to 100 % of the process heat demand and 28 to 82 % of the cooling demand.