Seaweed has been put forth as an eco-friendly solution for everything from plastics to fuel, but a new report from Cleantech Group indicates that the strongest commercial opportunities may lie closer to the farm.
The group’s “Algae Insight Report” found that seaweed-based products show the most promise in the agriculture, livestock feed, and cosmetics sectors, unlike larger markets like fuels, textiles, and bioplastics, where economic barriers persist.
“Methane-reducing livestock feed additives and biostimulants are currently among the most promising end-use markets for seaweed products,” noted the report.
Put simply, a biostimulant is a type of product that enables crops to grow better or withstand environmental stress.
Whereas fertilizer directly feeds nutrients to plants, biostimulants assist with functions like improving nutrient uptake, strengthening roots, or helping plants tolerate drought and heat to a greater degree.
The report also found that innovators are now commercially producing seaweed-based biostimulants at roughly $8-10 per liter, with some reporting crop yield increases of up to 20-30%.
Though these developments are all promising, the seaweed sector has generated plenty of hype in the past that hasn’t always panned out in terms of meaningful growth or investment, so I asked Nicole Cerulli, transportation and logistics associate at Cleantech Group and author of the report, why she believes this particular moment could be different.
“I think the key factor is that there is less reckless optimism but more pragmatism,” Cerulli told FI.
“From the past decade of boom-and-bust hype cycles, we know seaweed has a lot of potential, but we also know that it’s very context-dependent,” she noted.
Cerulli added that, this time around, the most successful players have adopted strategies like:
- Scoping out the market
- Securing low-cost, scalable feedstock and processing/logistics processes
- Identifying markets that could either absorb a premium or get additional benefits from specific products
“There are also other factors, such as increased demand for low-emissions inputs and focus on lifecycle emissions, development of seaweed cultivation and processing solutions, and evolving regulations that enable larger-scale cultivation. These support the growth of seaweed markets (particularly in Europe, where they remain quite small), but at a slow rate,” Cerulli explained.
Top 3 Most Commercially Viable Markets
The economic outlook of seaweed-derived innovations can also vary widely depending on the particular application that we’re talking about.
Cleantech Group’s report contends that lower-volume, higher-margin markets like agricultural inputs, feed additives, and cosmetics are proving to be more commercially viable than industries like plastics, textiles, or fuels, which Cerulli says are much larger, lower-value markets.
“To enter these markets, producers must be able to manufacture product at a very large scale and hit low enough price points to compete with non-algae conventional products,” she explained.
“In comparison, biostimulants and feed additives are smaller markets and can absorb a bit of a premium for algae-based products that provide other benefits (e.g. crop yield increase).”
Another especially promising opportunity lies in feed additives, as seaweed-based additives have shown potential in reducing the methane emissions of cattle, which significantly contribute to agricultural greenhouse gases and Scope 3 emissions.
Such additives could be highly appealing to food and ag companies that are working to lower their emissions and hit corporate sustainability targets.
Despite these perks, the sector still faces several challenges in terms of its scalability.
Barriers to Scaling Seaweed-Derived Products
According to the report, supply and processing costs may be seaweed’s biggest nemesis, as the segment has no shortage of technological innovations under its belt.
Consistent, low-cost biomass and energy-efficient processing are also hindering the sector’s ability to scale in a meaningful capacity.
And despite the hype surrounding seaweed-based plastics and fuels, Cerulli says that these markets are contending with pricing and scaling constraints of their own.
“The technology is certainly prepared, and some innovators have developed prototypes, pilots, and are even at early commercial stages,” she told FI.
“However, these materials incur a significant premium, so the demand market is therefore significantly limited to high-end or niche markets willing and able to pay that premium.”
The Food Institute Podcast
In this episode of Food for Thought Leadership, Chris Campbell, George Hajjar, and Anna Kinder examine how consumers are adapting to mounting economic pressure, rising gas prices and shifting travel behaviors in 2026. From staycations and micro-vacations to scaled-back road trips and reduced air travel, the FI All-Stars explore how households are reevaluating spending while still searching for meaningful experiences and moments of indulgence.
