The rapid growth of the city in Pulubala Urban Village, Gorontalo City, has resulted in pressure on the environment and the use of green open space (RTH). This study aims to analyse the use of green spaces in the residential area of Pulubala Village, which is inhabited by various ethnic groups. The method applied was descriptive qualitative, with data collection through observation, interviews, and documentation. The research findings indicate that RTH in Kelurahan Pulubala, covering an area of 0.50 Ha, consists of two categories, namely RTH Settlement Area and Smart Park. The benefits of RTH include play areas for children, social activities, and improved environmental quality. However, problems such as lack of space, poor condition, and environmental pollution threaten the sustainability of RTH. To optimise the utilisation of green spaces, better planning, increased public awareness, and the development of attractive facilities are needed. This research is expected to contribute to the preservation and development of green open spaces in urban areas.

Remote islands in Indonesia face significant challenges in achieving sustainable electricity supply. This study analyzes the technical and economic feasibility of implementing a hybrid Solar Power Plant (PLTS) and Wind Power Plant (PLTB) system on Dudepo Island, North Gorontalo Regency. With an average solar radiation of 5.2 kWh/m²/day and wind speed of 4.8 m/s, the hybrid system is designed to supply approximately 97% of local electricity demand with an efficiency of 85%. Simulations using HOMER Pro reveal an optimal configuration of 100 kW PLTS, 60 kW PLTB, and 300 kWh battery storage. Economic analysis indicates a Levelized Cost of Energy (LCOE) of IDR 1,450/kWh, more affordable than conventional diesel generators, with an eight-year payback period. The system’s implementation has enhanced community well-being by providing stable electricity access for education, healthcare, and economic activities. Moreover, it contributes to carbon emission reduction by up to 120 tons of CO? annually. Technical challenges and local human resource capacity necessitate sustainable management strategies, including technician training and IoT-based monitoring systems. This study offers recommendations for sustainable renewable energy development on remote islands as a model for environmentally friendly energy transitions.