Proceedings of the International scientific and practical conference ―Science, Technology and Culture in the Era of Globalization‖ (December 24-26, 2025) / Publisher website: www.naukainfo.com. – Geneva, Switzerland, 2026. – 234 p.

194 high-resolution geospatial data from Eastern Germany, which has similar built- environment characteristics. This approach significantly improved the accuracy of rooftop area estimates and, consequently, the assessment of technical PV potential. Transformation coefficients were applied to convert building footprint areas into actual rooftop surface areas, taking into account the variety of roof types, tilt angles, and architectural features of buildings. Additionally, surface suitability factors for solar panel placement were introduced, considering shading, technical constrains, and other factors affecting installation efficiency. Based on these data, the maximum potential installed capacity of RTPV for each building was calculated, and the results were aggregated at the level of administrative district and regions. The total potential for rooftop solar PV installations in Ukraine is estimated at approximately 238.8 GW, demonstrating a substantial resource for supporting the country's energy sector decarbonization. The annual electricity generation potential, taking into account seasonal and diurnal variations in solar irradiance, is estimated around 290 TWh, which could provide a significant share of domestic electricity consumption from local renewable sources [4]. The regional distribution of RTPV potential indicates the highest concentration in densely populated areas with large cities, particularly Kyiv, Dnipro, and Kharkiv. Cities with developed rooftop infrastructure demonstrate particularly high potential, opening up opportunities for the creation of local energy communities and microgrids that can improve the overall resilience of energy systems. The key technical indicator is full load hours (FLH), which for rooftop installations in Ukraine range from 1,178 hours in the Carpathian region to 1,583 hours in Crimea. For most regions, the figures range from 1,239 to 1,457 hours. The most optimal configuration is a south-facing roof with a tilt of 30–40°, which provides maximum generation capacity. Generation seasonality is a significant factor in planning: the summer months deliver peak performance, whereas winter production is substantially lower. Roof orientations facing east and west show higher output in the morning and evening hours, which is useful for load balancing, while