The objective of this study is to examine how it can become business economical feasible for Mørkøv district heating and Holbæk municipality to achieve local and national goals by integrating a cross-sector energy system with a behind-the-meter approach in 2030. To guide the choices of research for the analysis, the framework for a feasibility study has been applied to evaluated the economic business results of established cross-sector energy systems. To establish the energy system, Scenario Theory has been applied as the overall approach in understanding for future studies. The scenarios established and the specific actions of the smart energy systems performed in the simulation are inspired by the concept of smart energy systems. Data were collected following the mathematical modeling method that applied the data spreadsheet software Excel as a tool to perform the simulated scenarios and to produce the required output. The results reported here confirm that it is possible Mørkøv district heating to achieve the national and local goals of Holbæk municipality by integrating the cross-sector approach and producing heat through an electric-fueled district heating system. This is certain after the establishment of the second scenario that delivered a competitive business scenario for the current energy system for Mørkøv district heating.