The world is facing a growing demand for clean and renewable energy, especially in the regions near the Equator, where some of the most populous countries are located. But land is scarce and expensive, and solar panels on land face many challenges such as land use conflict, transmission losses, and overheating. Is there a better way to harness the abundant and consistent sunlight near the Equator?
The answer may lie in the ocean. Offshore floating solar is a relatively new concept that involves installing solar panels on floating structures on the sea surface. The first offshore floating solar plant was installed in 2016 in the UK, and since then, several projects have been deployed or planned around the world, mostly in Asia and Europe.
But the real potential of offshore floating solar lies near the Equator, where the seas are calm and the sun is plentiful. According to a recent study by researchers from Australia and Singapore, if we covered just 1% of the world’s oceans with floating solar panels, we could generate enough electricity to meet the world’s current energy demand – more than 20 terawatts.
The study also identified the regions that have the greatest potential for this technology, such as Indonesia and West Africa. These regions have high population density, high solar irradiance, low wave height, and low water depth. They also face energy insecurity, poverty, and environmental degradation. Offshore floating solar could provide them with effectively unlimited solar energy, while avoiding land use conflict, reducing transmission losses, and cooling the panels with seawater.
Offshore floating solar is not a silver bullet for our energy problems. It is one of many solutions that we need to pursue to achieve a clean energy transition. But it is a promising and innovative technology that could make a significant contribution to our future energy mix.
As one of the authors of the study said: “The Equator is home to some of the world’s most populous countries. It also has the most consistent levels of sunlight anywhere on Earth. This makes it an ideal location for offshore floating solar power plants.”
Offshore floating solar could also complement other renewable energy sources, such as wind and wave power, and create hybrid systems that increase reliability and efficiency. As another author of the study said: “Floating solar panels on the ocean could produce almost twice as much electricity as those on land – because seawater cools them down. This means they can operate more efficiently.”
Offshore floating solar is still in its early stages of development, and faces some challenges such as corrosion, biofouling, anchoring, and maintenance. But these challenges are not insurmountable, and can be overcome with further research and innovation.
Offshore floating solar is a technology that deserves more attention and investment from governments, businesses, and communities. It could be a game-changer for our energy future, especially for those who live near the Equator. As one of the researchers said: “The potential for offshore floating solar is enormous.”
Relevant articles:
– ‘Limitless’ energy: how floating solar panels near the equator could power future population hotspots, The Conversation, August 3, 2023
– ‘Limitless’ energy: floating solar near equator could power future population hotspots, pv magazine Australia, August 4, 2023
– Floating Solar Panels at The Equator Could Provide Virtually Unlimited Energy, ScienceAlert, August 4, 2023