The US company turns fish fat and cooking oil into a fuel replacement for number 6 heating oil, which is a syrupy, tar-like substance used to power industrial buildings, ocean liners and tankers. It has been known to collect at the water's edge and cause wildlife mortalities.
The fish fat used comes primarily from catfish producers, but Sweetwater is looking for fat from any fatty species, from salmon to dogfish to lake trout.
With hopes to up its 80 million gallon production rate by 50 percent this year, Alabama-based Sweetwater is “always looking for new facilities,” Sweetwater Biofuels Director of Marketing and Communications Bob Hiller told IntraFish.
"If we see a big enough opportunity within a particular market, we could come to that market and build a facility," he said.
In the past, it took over an old plant that was formerly used by US premium catfish producer, Delta Pride.
Sweetwater buys the fat for $0.10 (€0.08) to $0.50 (€0.38) per pound, but the economic gain is greater when considering themoney saved in waste transport costs.
Once the word got out in Boston, Hiller said interest in the company’s offerings began to increase.
“We were in a very quiet corner of that show, and at first I was thinking ‘are we going to be standing by ourselves for three days?’” Hiller said. “And all the sudden, word started to get around; ‘there are some guys at 390 that will pay you for your waste.’”
In the wake of the show, calls of interest have streamed in.
“We’re providing jobs, we’re bringing in the green industry and we’re taking care of this waste problem that no one has ever been able to do anything about,” Hiller said.
(seafood.vasep.com.vn) The year 2025 marked a pivotal milestone for Vietnam’s seafood industry in its restructuring process toward sustainability, transparency, and higher value creation, amid continued uncertainties in the global economic and trade environment. Prolonged inflation in major economies, the rising trend of trade protectionism, and increasingly stringent requirements related to environmental standards, traceability, and social responsibility have posed significant challenges to seafood production and exports. Nevertheless, overcoming these pressures, Vietnam’s seafood sector has gradually demonstrated its adaptability, maintained growth momentum, and laid an important foundation for the next stage of development.
(seafood.vasep.com.vn) Amid the increasingly evident impacts of drought and saltwater intrusion, the shrimp-rice production model in Ca Mau province continues to prove itself as a viable direction, contributing to higher farmer incomes, improved soil conditions and the promotion of ecological and sustainable agricultural development.
(seafood.vasep.com.vn) The management of fishing vessels, monitoring of fishing activities, and handling of violations in the fisheries sector in Lam Dong province have continued to be implemented in a synchronized and stringent manner, contributing to raising awareness of legal compliance among fishermen and aiming to end illegal, unreported and unregulated (IUU) fishing.
(seafood.vasep.com.vn) Can Tho’s fishery industry sustained steady growth in 2025 with total aquatic and marine output reaching nearly 783,000 tons, fulfilling 100% of the annual target. Aquaculture, capture fisheries and fishing fleet management were further strengthened, aiming for sustainable development in the coming years.
(seafood.vasep.com.vn) In 2025, Vietnam’s pangasius export turnover reached nearly USD 2.2 billion, up 8% year-on-year. This result indicates that pangasius exports maintained their growth momentum despite significant volatility in the global market environment. In December 2025, pangasius export value reached USD 200 million, up 10% compared to December 2024. This solid performance in the final month of the year reflects increased import demand for consumption and inventory replenishment in key markets.
(seafood.vasep.com.vn) In 2025, Vietnam’s tuna exports to Spain experienced significant fluctuations. According to Vietnam Customs, during the first 11 months of 2025, export turnover for the first 11 months of the year edged up by 0.3% year-on-year, reaching nearly $15 million.
(seafood.vasep.com.vn) Deputy Prime Minister Bui Thanh Son has signed Decision No. 16/QD-TTg, dated January 5, 2026, approving the implementation plan for the Vietnam-Israel Free Trade Agreement (VIFTA). Under the plan, in the coming period, ministries, ministerial-level agencies, government-affiliated entities and People’s Committees of provinces and centrally-run cities must institutionalize and execute tasks focused on the dissemination of information regarding VIFTA and the Israeli market; legislative and institutional development, as well as enhancing competitiveness and human resource growth...
(seafood.vasep.com.vn) Beyond achieving double-digit growth, Vietnam’s fish cake and surimi exports are showing a notable year-end "inflection point": the EU his accelerating with nearly twofold growth, China & Hong Kong are rising sharply, while the largest market, South Korea, signaled a slowdown in November. According to Vietnam Customs data, export turnover of fish cake and surimi reached $327 million in the first 11 months of 2025, up 22% year-on-year; November 2025 alone accounted for $35 million, marking a 5% increase. This serves as a critical foundation for exporters to reassess market structures and competitive intensity while finalizing order strategies for 2026.
(seafood.vasep.com.vn) Ca Mau, widely regarded as the nation’s “shrimp capital”, continued its strong performance in 2025 as shrimp output reached nearly 600,000 tons, maintaining its position as Vietnam’s leading shrimp-producing locality.
(seafood.vasep.com.vn) On December 29, 2025, at the 2025 Pangasius Industry Review Conference held in Can Tho City, the Vietnam Pangasius Association announced that fingerling prices have surged to record levels due to acute supply shortages.
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