The Caribbean faces a recurring environmental crisis: the massive influx of Sargassum seaweed. The shorelines are increasingly plagued by Sargassum due to climate change and ocean eutrophication, leading to harmful methane emissions, disturbance of marine ecosystems, harming fisheries, and negative impacts on tourism-dependent communities. Left unmanaged, this problem threatens both local livelihoods and regional sustainability.

Managing Sargassum, however, is not only an environmental challenge but also an economic burden. Clean-up is labor-intensive and costly, with governments and businesses spending millions each season on short-term efforts that offer only temporary relief. Beyond the visual nuisance, the problem affects coastal communities, marine biodiversity, and economic stability across the region.

SarGas Ltd. turns this challenge into an opportunity for sustainability, innovation, and regional growth. By applying advanced anaerobic digestion, we transform the invasive Sargassum seaweed into biogas-derived renewable electricity and organic fertilizers.

Our model is circular, scalable, and tailored to the Caribbean context. It not only mitigates environmental damage but also creates local value chains, strengthens food security, and enhances agricultural productivity with the organic fertilizer, and supports the region’s transition to a renewable energy system by generating electricity from our biogas 24/7.

Since 2019, the SarGas team has explored the potential of converting Sargassum from a burden into a resource. Through the support of the Swedish company AlgaeFuel Sweden, a pilot biogas facility was set up at True Blue Bay Resort, Grenada, in 2022 to conduct real-world tests of using Sargassum for biogas and fertilizer production. The MVP facility has successfully been operated, where biogas has been used by the hotel’s bakery, and fertilizer has been used for the gardens.

SarGas Ltd has attracted multiple important partnerships in Grenada to build the first large-scale biogas facility, SarGas ONE, that is going to process 7,000 tons of Sargassum annually, co-digested with other biomass, to produce biogas for continuously generate 160 kW of electricity. To secure the whole value-chain of Sargassum management, the Grenada government has engaged to find solutions. SarGas has been short-listed as an important and viable solution. We have an MOU with the Grenada Solid Waste Management Authority to harvest and transport Sargassum to our facility. Public Utilities Regulatory Commission (PURC) has pre-selected our application for a Generation License. The electricity utility, Grenlec, has approved our grid connection.