The best of EcoWatch, right in your inbox. Sign up for our email newsletter!
Giant Floating Solar Farms Could Make Fuel and Help Solve the Climate Crisis, Says Study
Millions of solar panels clustered together to form an island could convert carbon dioxide in seawater into methanol, which can fuel airplanes and trucks, according to new research from Norway and Switzerland and published in the Proceedings of the National Academy of Sciences journal, PNAS, as NBC News reported. The floating islands could drastically reduce greenhouse gas emissions and dependence on fossil fuels.
The paper argues that the technology exists to build the floating methanol islands on a large scale in areas of the ocean free from large waves and extreme weather. Areas of the ocean off the coasts of South America, North Australia, the Arabian Gulf and Southeast Asia are particularly suitable for mooring these islands.
"A massive reduction in CO2 emissions from fossil fuel burning is required to limit the extent of global warming. However, carbon-based liquid fuels will in the foreseeable future continue to be important energy storage media. We propose a combination of largely existing technologies to use solar energy to recycle atmospheric CO2 into a liquid fuel," the study authors wrote in PNAS.
The paper suggests floating islands are similar to floating fishing farms. The researchers envision clusters that would consist of approximately 70 circular solar panels, or islands, covering an area of roughly a half of a square mile. The solar panels would produce electricity, which would split water molecules and isolate hydrogen. The hydrogen would then react with the carbon dioxide pulled from the seawater to produce usable methanol, according to NBC News.
The study authors argue that this method will address the hurdles of making renewable energy competitive with fossil fuels on a large scale, as Newsweek reported.
Andreas Borgshulte, a co-author on the paper, said the idea for the solar islands came to the researchers when they were asked by the Norwegian government to push fish farms out to open sea. Those grids needed their own energy. "Energy 'producing' islands had been proposed some time ago," he said to Newsweek. "What remained was to include energy storage." Borgshulte and his team are currently developing floating island prototypes. They estimate that output from 3.2 million floating islands would exceed the total global emissions from fossil fuels.
A single floating solar farm could produce more than 15,000 tons of methanol a year — enough to fuel a Boeing 737 airliner on more than 300 round-trip flights between New York City and Phoenix, according to NBC News reported. "We'd mostly want to use the fuel in airplanes, long-haul trucks, ships and non-electrified railroad systems," said Bruce Patterson, a physicist at the University of Zurich and one of the study's co-authors, as NBC News reported.
Solar floating farms do not address individual actions, which Patterson argues are also necessary to combat the climate crisis. "This is just one of the many things we should be doing to control climate change, along with having better insulation in our homes, having higher efficiency in car engines and driving electric vehicles," he said to NBC News.
EcoWatch Daily Newsletter
A jury in Missouri awarded a farmer $265 million in a lawsuit that claimed Bayer and BASF's weedkiller destroyed his peach orchard, as Reuters reported.
A coalition of local and national groups on Friday launched a legal challenge to a Louisiana state agency's decision to approve air permits for a $9.4 billion petrochemical complex that Taiwan-based Formosa Plastics Group plans to build in the region nationally known as "Cancer Alley."
Well, he told us he would do it. And now he's actually doing it — or at least trying to. Late last week, President Trump, via the U.S. Department of the Interior's Bureau of Land Management, announced that he was formalizing his plan to develop lands that once belonged within the Bears Ears and Grand Staircase-Escalante National Monuments in southern Utah. The former is a stunningly beautiful, ecologically fragile landscape that has played a crucial role in Native American culture in the Southwest for thousands of years; the latter, just as beautiful, is one of the richest and most important paleontological sites in North America.