This study aims to assess the matching of solar energy supply with the electrical demands of a business park consisting of warehouses as well as the heating demand of the park’s neighboring community for the year 2023. Various configurations of photovoltaic (PV) panels and solar thermal (ST) systems, combined with thermal energy storage (TES) of different sizes, have been evaluated. The input data includes roof area,irradiation levels, PV power production from an existing system, and electricity and heat demand profiles. Key technical parameters analyzed are self-consumption (SC) and self-sufficiency (SS) ratios for electricity and heat separately, as well as combined energy usage. Additionally, excess electricity and waste heat were examined. The results show that a significant portion of both electricity and heat is not utilized on-site. While surplus PV electricity can be exported to the grid, generating some economic value, the ST systems exhibit high levels of thermal energy waste. The currently suggested TES capacity is insufficient to store the total excess heat, leading to poor SC and SS ratios. Achieving a zero-waste heat scenario with the current TES configuration would require allocating 13% of the building area to ST. Therefore, increasing the share of PV would be the most advantageous solution unless TES capacity is expanded or excess thermal energy is utilized.

Future research could focus on a techno-economic assessment to determine the optimal system size by balancing economic and technical trade-offs, potentially incorporating other energy storage or boiler technologies.