The deployment of photovoltaic (PV) systems in the built environment is limited by lacking structural capacity of existing roofs. PV snow mitigation systems can overcome such limitations by reducing heavy snow loads through active snow melting. The competitiveness of such systems is influenced by how much energy is needed to melt the snow and how much the yield is increased by reducing the snow cover on the modules. This study aims to quantify the energy consumption and yield enhancement of PV snow mitigation systems using numerical simulations. With an adapted energy balance snow model simulating Snow Water Equivalent (SWE), the energy consumption from melting snow as well as the snow cover duration on the modules are estimated. The snow cover duration is then used as input in PV yield simulations to quantify the yield enhancement. Different types of snow load climates are investigated. The results show that the energy consumption is < 11.8 kWh/m2 and the yield enhancement < 3 kWh/m2 per year depending on the climate and the melting limit. Climates with low characteristic snow loads give the lowest energy consumption and the highest yield enhancement. For the investigated climate with the lowest snow load (50-year return period snow load = 0.7 kN/m2) the enhancement is larger than the consumption giving a positive energy balance of 0.6 kWh/m2. The relative influence on the energy production is + 1 % to −13 % of the production of PV systems without active snow mitigation.