Guest Editor(s)
Prof. Dr. Zhang Dong
Email: zhangdong@lut.edu.cn
Affiliation: School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, China
Homepage:
Research Interests: solar energy utilization, solar-dominated integrated multi-energy complementary systems, renewable energy conversion, storage and dispatch, energy conservation in high energy-consumption industrial processes, efficient cooling and thermal management of electronic and mechanical components

Prof. Dr. Zhang Xiaofeng
Email: xiaofengzhang@csust.edu.cn
Affiliation: College of Energy and Power Engineering, Changsha University of Science and Technology, Changsha, China
Homepage:
Research Interests: optimization and control of integrated energy system, renewable energy utilization

Prof. Dr. Jing Rui
Email: rjing@xmu.edu.cn
Affiliation: College of Energy, Xiamen University, Xiamen, China
Homepage:
Research Interests: multi-energy integration, urban building energy modelling

Summary
Solar energy utilization is rapidly evolving from stand-alone photovoltaic or photothermal conversion toward integrated, flexible and low-carbon energy systems. Coupling solar energy with heat pumps, thermal storage, batteries, hydrogen, biomass, waste heat recovery and demand-side resources provides an important pathway for improving renewable energy penetration, enhancing system resilience and supporting carbon-neutral energy engineering. However, the intermittency of solar resources, multi-timescale energy conversion, source-load mismatch, and techno-economic uncertainties still pose major challenges for system design, operation and application.
This Special Issue aims to collect high-quality research on advanced solar energy utilization and multi-energy complementary systems, with emphasis on conversion mechanisms, system integration, intelligent optimization, energy storage, lifecycle assessment and engineering demonstrations. We welcome original research articles and review papers addressing:
· solar photovoltaic/thermal/PVT technologies
· solar energy and storage technologies in industrial applications
· solar-assisted heat pumps
· hybrid renewable energy systems
· hydrogen and storage integration
· multi-energy microgrids
· industrial energy conservation, data-driven control, carbon-emission evaluation, and practical applications in buildings, industry, campuses and zero-carbon parks.
Keywords
solar energy utilization, multi-energy complementary systems, photovoltaic/thermal systems, solar-assisted heat pumps, energy storage, hydrogen energy, integrated energy systems, intelligent optimization, waste heat recovery, carbon-neutral energy engineering