In facing the overwhelming problem of invasive sargassum algae washing up on Caribbean shores, scientists from the University of the West Indies (UWI) have embarked on an innovative project to produce bio-compressed natural gas (bio-CNG) for vehicles. For years, the sight and smell of sargassum have deterred tourism across the region, turning picturesque beaches into unsightly masses of debris. In response to this crisis, a group of environmentalists and researchers has found a promising solution by transforming sargassum into a renewable energy source.
Turning Waste into Fuel: Caribbean Scientists Transform Invasive Seaweed into Biofuel

Turning Waste into Fuel: Caribbean Scientists Transform Invasive Seaweed into Biofuel
Caribbean researchers are revolutionizing biofuel production by converting invasive sargassum seaweed into an eco-friendly vehicle fuel, tackling both environmental and economic challenges.
The initiative began in 2011, when increasing amounts of sargassum—a brown seaweed from the Sargasso Sea—coated Caribbean beaches, raising concerns among local residents and tourism stakeholders. In 2018, Barbados' Prime Minister Mia Mottley labeled the issue a national emergency. However, through this latest development, local scientists are not just addressing a nuisance; they are creating a potential green-energy opportunity.
UWI researchers have recently showcased one of the world’s first vehicles powered by bio-CNG derived from sargassum, rum distillery wastewater, and indigenous sheep dung. The conversion process is straightforward and affordable, requiring only a four-hour installation and a kit costing around $2,500. Dr. Legena Henry, the project’s founder and a renewable energy expert, emphasizes the abundance of sargassum for fuel production, declaring, “We will never run out of this resource.”
Initially focused on sugarcane, the team shifted its attention to sargassum after realizing the seaweed's potential for creating biofuel. Their journey gained momentum when student Brittney McKenzie proposed exploring the use of sargassum after noticing the extensive cleanup efforts on local beaches. Two weeks of trial experiments produced promising results, prompting the team to file a patent and seek investors, leading to a $100,000 grant from the US non-profit Blue Chip Foundation.
Biologist Shamika Spencer joined the effort to optimize fuel production by experimenting with varying quantities of sargassum and wastewater. Spencer notes the project's dual benefit: reducing the health hazards associated with decomposing sargassum, such as hydrogen sulfide release, and safeguarding tourism, which has suffered enormously due to the seaweed's rapid influx.
With climate change contributing to the increase in sargassum, Barbados strives for sustainable solutions. The collaboration reflects a growing movement in the Caribbean to take environmental matters into their own hands amid global climate challenges. As Dr. Henry points out, the technologies emerging from this initiative could have a worldwide impact, benefiting not only the Caribbean but also regions like West Africa and South America.
The next step involves scaling the project to fuel more vehicles, seeking funding to create biogas stations, and exploring other uses for sargassum, such as pest control products. With their innovative mindset and commitment to sustainability, these Caribbean scientists are setting an example for global efforts to combat climate-related challenges through resource conversion.
As Brittney McKenzie reflects on the project's success, she encourages aspiring scientists: “You never know when you might make the next big discovery.” Dr. Henry emphasizes that this breakthrough signifies an opportunity for significant investment and innovation, as Caribbean nations move toward a greener energy future, effectively turning an eyesore into an asset.
UWI researchers have recently showcased one of the world’s first vehicles powered by bio-CNG derived from sargassum, rum distillery wastewater, and indigenous sheep dung. The conversion process is straightforward and affordable, requiring only a four-hour installation and a kit costing around $2,500. Dr. Legena Henry, the project’s founder and a renewable energy expert, emphasizes the abundance of sargassum for fuel production, declaring, “We will never run out of this resource.”
Initially focused on sugarcane, the team shifted its attention to sargassum after realizing the seaweed's potential for creating biofuel. Their journey gained momentum when student Brittney McKenzie proposed exploring the use of sargassum after noticing the extensive cleanup efforts on local beaches. Two weeks of trial experiments produced promising results, prompting the team to file a patent and seek investors, leading to a $100,000 grant from the US non-profit Blue Chip Foundation.
Biologist Shamika Spencer joined the effort to optimize fuel production by experimenting with varying quantities of sargassum and wastewater. Spencer notes the project's dual benefit: reducing the health hazards associated with decomposing sargassum, such as hydrogen sulfide release, and safeguarding tourism, which has suffered enormously due to the seaweed's rapid influx.
With climate change contributing to the increase in sargassum, Barbados strives for sustainable solutions. The collaboration reflects a growing movement in the Caribbean to take environmental matters into their own hands amid global climate challenges. As Dr. Henry points out, the technologies emerging from this initiative could have a worldwide impact, benefiting not only the Caribbean but also regions like West Africa and South America.
The next step involves scaling the project to fuel more vehicles, seeking funding to create biogas stations, and exploring other uses for sargassum, such as pest control products. With their innovative mindset and commitment to sustainability, these Caribbean scientists are setting an example for global efforts to combat climate-related challenges through resource conversion.
As Brittney McKenzie reflects on the project's success, she encourages aspiring scientists: “You never know when you might make the next big discovery.” Dr. Henry emphasizes that this breakthrough signifies an opportunity for significant investment and innovation, as Caribbean nations move toward a greener energy future, effectively turning an eyesore into an asset.