The concept of floating solar panels, particularly on large reservoirs at existing hydropower facilities, is rapidly gaining traction worldwide. This approach offers a sustainable solution that avoids consuming valuable land. A prime example is the ambitious project in Indonesia, backed by Masdar, which is set to create the world’s largest floating solar power plant.
The plant is located at the Cirata hydropower reservoir in West Java, Indonesia. Initially, a 145-megawatt floating solar array was installed and recently became operational. Encouraged by its success, an expansion was announced at COP 28, aiming to increase the capacity to 500 megawatts. Masdar, the Abu Dhabi Future Energy Company, is spearheading this project, reflecting its commitment to advancing renewable energy and sustainable technologies.
Floating solar technology presents numerous advantages. It conserves land and helps reduce water evaporation from reservoirs, thus conserving water. The shade from solar panels can also mitigate toxic algae blooms in these water bodies. Additionally, the cooling effect of water on solar panels can improve their conversion efficiency. Co-locating solar arrays with existing hydropower infrastructure allows for the efficient use of existing power lines and transportation facilities.
However, floating solar arrays face unique challenges, such as corrosion and adapting to fluctuating water levels and complex underwater terrain. The Cirata project, constructed by the Chinese firm Sungrow FPV, showcases innovative solutions to these challenges, such as high-load-bearing anchor blocks designed for the specific geological conditions of the site.
Beyond solar power, Masdar and PLN (Nusantara Power) are also exploring green hydrogen projects. These initiatives align with the Belt and Road Initiative, under which floating solar technology could be replicated in other participating countries.
Green hydrogen production, another focus area for Masdar and PLN, involves generating hydrogen through renewable resources like water. Current research includes developing systems that can produce hydrogen directly from seawater and other unpurified sources. One notable innovation is a floating photovoltaic device that produces both purified water and green hydrogen, demonstrating the potential synergy between floating solar technology, water conservation, and green hydrogen production in the renewable energy landscape.
www.cleantechnica.com/2023/12/03/worlds-largest-floating-solar-power-plant-hydropower-reservoir/