The Danish power system is expected to undergo a technically challenging evolution in the coming years and decades, caused by an increase of the wind power penetration. As the production of power will become less controllable due to weather conditions, the end-consumers will need to evolve into active elements of the power system. The transformation is often referred to as demand side management. Electric vehicles and heat pumps are expected to offer a great deal of flexible consumption in the future. This master’s thesis investigates the influence of implementing the units in two different LV grids in a 2025 scenario. Models of the units have been implemented in DIgSILENT PowerFactory DSL. A multi-layer control strategy has been applied, which enables the units to improve the voltage levels of weak grids and enables the future aggregators to provide balancing services to the TSO.