Last week brought a milestone Maldivian energy planners have been working toward for years. Swimsol, the Austria-based marine solar specialist, switched on a 2.4 MW floating array at Cheval Blanc Randheli. It is the largest in the country. The system lets the resort run entirely on solar during daylight hours and is expected to save about USD 1.5 million in diesel each year.
It is real proof, at scale, that solar can replace diesel in one of the toughest settings imaginable. This is a working island surrounded by salt water, with no land to spare. But it is also a reminder that floating solar at sea is one tool among several. The Maldives has more than a thousand islands. It has lagoons, reef flats, rooftops, harbours and jetties. There is room for a far wider mix of solar than is currently being used.
The need is urgent. Solar PV produced only around 6 percent of national electricity as of mid-2024. The government has committed to 33 percent renewables by 2028 and net-zero by 2030. Closing that gap will require every viable form of solar the country’s geography can support.
The sea: floating solar and lagoon arrays
Marine floating PV is the headline technology, and rightly so. Land is the binding constraint here, and the sea is everywhere. Modern systems use marine-grade aluminium and stainless steel. Panels are mounted well above the waterline to resist waves, salt and biofouling. The water also cools the panels, which lifts output by a few percent compared with land-based systems.
A quieter option is shallow-lagoon FPV. The technology used on inland reservoirs is cheaper and lighter than open-sea systems. Protected lagoons inside Maldivian atolls offer some of the calmest water surfaces in the world. With careful siting, lagoon arrays could be deployed faster than full offshore platforms.
The rooftops we still haven’t used
Before any sea-based system, rooftops remain underused. Resort villas, schools, warehouses, hospitals, ferry terminals and government buildings all sit under strong equatorial sun. Marine-grade modules with sealed junction boxes and corrosion-resistant frames have proven durable on Maldivian islands for over a decade. On inhabited islands, scattered rooftops can be aggregated through community ownership or feed-in arrangements. That alone could turn unused roof space into a serious share of local supply.
Canopies, carports and walkway covers
A surprising amount of the country’s flat, sun-exposed area is not roof at all. It is jetty, harbour, parking lot, market and walkway. Solar canopies do two jobs at once. They shade people and vehicles from heat and rain, and they generate power. In Malé and Hulhumalé, land is scarce but covered outdoor space is in constant demand. Canopies over parking, ferry queues and public squares could add real capacity without using a single new square metre of ground.
Building-integrated solar (BIPV)
For multi-storey buildings in the capital, rooftop area per resident is tiny. The next frontier is BIPV. Solar cells are embedded directly into facades, awnings, skylights and balcony rails. It costs more per watt than standard panels. But it is most efficient when designed into new construction from the start. The government’s housing pipeline is the natural place to begin specifying it.
Solar plus desalination and mariculture
Energy and water are the same problem in the Maldives. Most inhabited islands desalinate, and most desalination runs on diesel. Pairing reverse-osmosis units directly with solar and battery storage is already being piloted under the ASSURE programme. The approach turns sunlight into both electricity and drinking water on the same island. The same hybrid logic applies to ice plants for the fishing fleet and cold storage for the export sector.
There is also growing interest in aquavoltaics. Solar panels are mounted above mariculture pens. The shade lowers temperature stress on stock. The panels generate power for aerators, pumps and feed systems. Taiwan now operates aquavoltaic farms at the tens-of-megawatts scale. For a country building a domestic mariculture industry, the dual-use logic is worth a serious look.
The point is the mix
No single technology will get the Maldives to 33 percent by 2028, let alone net-zero by 2030. Floating solar is the most visible answer because it solves the most visible constraint. But rooftops, canopies, building skins, lagoon arrays and solar-powered water systems all need to be in the plan. The Cheval Blanc array proves the engineering works. The harder work is choosing the right mix of technologies for inhabited islands, harbours, public buildings and food systems. That is a planning question now, not a technical one.
