As photovoltaic (PV) systems became increasingly affordable and reliable, electricity consumers are looking to use their property to generate electricity for self-supply. PV systems on their own will not significantly impact the end users energy costs unless integrated with a form of energy storage to help manage the energy produced by the PV system. The key challenge to this approach is to appropriately size the solar and energy storage solution with respect the to the customer load and maximize the solar utilization and the energy storage throughput. This masters thesis will discuss the challenges of integrating commercial Behind-the-Meter PV distributed energy resource technologies. A techno-economic case study of using small scale PV with battery energy storage solutions (BESS) as a means for peak power demand and energy cost reduction in Bosnia and Herzegovina will be presented.