SINGAPORE - Floating photovoltaic systems are no longer a niche experiment. Global cumulative capacity has passed 18 gigawatts, with about 14 gigawatts from floating installations alone, according to 2026 industry data. The world added more than 1.1 gigawatts in the first half of 2026, up 37 percent year on year, and full-year additions are projected at 7.8 gigawatts.
The scale shift is clearest in Asia. China's Dezhou Dingzhuang project, at 320 megawatts, remains the largest single operating floating array. India's 600-megawatt Omkareshwar project is set to become the world's largest once fully commissioned, while Indonesia's Cirata reservoir hosts a phased 2.2-gigawatt development. China alone is home to nine of the ten largest floating solar plants.
The rapid growth of floating photovoltaic (PV) power plants is driven not only by their role in climate mitigation but also by the scarcity of land resources. In densely populated Asian countries, utilizing water surfaces helps avoid competition for land with agriculture and residential development. Furthermore, the proximity of reservoirs and hydropower plants to existing grid infrastructure helps shorten the time required for project approval and construction. By 2025, the average scale of new floating PV projects has reached 45 megawatts-up from just 5 megawatts in 2015-a shift that indicates floating PV is increasingly becoming a standard option for power producers.
The backing provided through engineering as well as economics has made the case even more compelling. According to available literature, floating panels are cooler than those laid on land, thus yielding 5%-20% more electrical power depending on the climatic zone. The water underneath also inhibits evaporation, with different studies showing savings in the range of 27%-70%. The cost of the floating systems in the world has reached $0.41-$0.52 per watt by 2026, which is about 38% cheaper than in 2022. Current prices for large utility projects range between $0.65 and $1.10 per watt-peak, but this is still 30%-50% higher than the cost of the ground-mounted solar energy.
The next frontier is saltwater. More than 90 percent of floating solar sits on inland freshwater. Offshore designs must withstand salt corrosion, waves and biofouling. A Dutch North Sea demonstration has been engineered for a 50-year storm with 13.5-meter waves, but costs more than twice as much as inland projects. China is gathering data from seawater floating projects, including a 40-megawatt concentrated seawater array at Tianjin.
Environmental scrutiny is also growing. Floating arrays reduce light penetration and can affect aquatic plants, algae and oxygen levels. Researchers say coverage limits and eco-friendly anchoring are critical to keeping ecological impacts acceptable. Several jurisdictions are writing such limits into permitting rules.
The policies in the West are catching up with the flow of events. The Inflation Reduction Act of the U.S. provides a 30 percent basic investment tax benefit coupled with additional bonuses that have enabled floating projects of 10-50 MW to gain the financial ground. The Netherlands has commissioned over 2 gigawatts, while 1.5 more is either now being constructed or received permits. The European Union has started fast-tracking floating solar plants on the already existing water areas which may save 12-18 months.
What we have left to discuss is no longer the question of whether floating solar works well. Rather, the main issue now is how far it can be spread before we face some ecological problems and if permitting can follow the pace.
