Vol. 4 No. 2 (2025): May 2025 Issue

The May 2025 issue of Future Energy Journal brings together multidisciplinary research spanning climate neutrality, energy efficiency, technological innovation, renewable energy integration, and hydropower. This issue examines the diversification of electric power generation and its role in supporting climate-neutral energy systems, highlighting the importance of a balanced and sustainable generation mix. Complementing this work is an investigation into the use of nano-enhanced phase change materials to improve the thermal performance of Trombe walls, demonstrating innovative approaches to building energy efficiency. The issue also explores the relationship between public policies, technological innovation, and patent activity in Brazil’s oil and gas industry. In renewable power systems, an optimization study addresses power load flow under the stochastic nature of wind and solar generation. Finally, a comprehensive review of emerging hydropower technologies examines advances ranging from novel turbine designs to artificial intelligence, reflecting the growing integration of digital technologies into renewable energy systems. Together, these contributions highlight the diverse technological, economic, and policy dimensions shaping the transition toward more efficient, resilient, and sustainable energy systems.