TLDR: The sharpest sustainability progress often comes from small teams with one clear idea; the lesson for large budgets is to fund focused execution and measure the outcome.
Small teams ship outsized impact
Constraint sharpens focus. A small team with a single problem and a tight budget moves faster than a committee with a large one, because it has one decision to make and one outcome to prove. Two ventures show the pattern, and both turn a waste stream into a product.
| Venture | What it makes | Measured outcome |
|---|---|---|
| Notpla (London) | Packaging from seaweed and plants | Earthshot Prize, 2022; tens of millions of single-use plastic pieces replaced; targeting one billion units by 2030 |
| Gjenge Makers (Nairobi) | Paving bricks from recycled plastic | Around 1,500 bricks a day; founder named a UNEP Young Champion of the Earth |
Notpla turns seaweed into packaging
Notpla makes packaging from seaweed and plants that breaks down like food waste. The London team won the Earthshot Prize in 2022, and built from there: it has replaced tens of millions of pieces of single-use plastic and aims for one billion units by 2030. Its material is among the first recognised as plastic-free under the European Union’s Single-Use Plastics (SUP) Directive. A handful of people changed what a takeaway box can be made of.
Gjenge Makers turns plastic into bricks
In Nairobi, engineer Nzambi Matee founded Gjenge Makers to recycle plastic the city struggled to handle. The plant now produces around 1,500 paving bricks a day from recycled plastic, blocks that run stronger and cheaper than concrete. The enterprise created jobs for waste collectors and youth groups, and the United Nations Environment Programme (UNEP) named Matee a Young Champion of the Earth. A small workshop turned a landfill problem into a building material.
What big budgets can learn
The common thread is focus paired with proof. Each team chose one outcome, measured it, and let the number make the case. Large organisations can borrow the discipline. Corporates can pilot with and procure from small innovators, which moves a sustainability budget into proven solutions. Funders and foundations can pair grants with measurement, so a promising idea earns its next round on evidence, the discipline Mezyan sets out in its guide to verifiable carbon data. Investors can write the early cheque, where a modest sum and a clear metric carry a team to scale.
Mezyan helps funders and corporates pair every innovation budget with the measurement that proves the outcome.
FAQ
Why do small teams drive ESG innovation?
A tight budget and a single problem force focus, fast iteration, and one measurable outcome, which large organisations can struggle to match.
How can a large company benefit from small innovators?
By piloting, procuring, and funding them, which turns a sustainability budget into proven solutions and gives the innovator a path to scale.
What makes an ESG innovation credible?
A measured outcome. A clear metric, verified, separates a real solution from a promising story.
References
- The Earthshot Prize. Notpla — Winner 2022. https://earthshotprize.org/winners-finalists/notpla/
- Euronews. Seaweed is taking plastic out of stadiums and sandwich boxes. https://www.euronews.com/2025/06/07/we-dont-want-to-be-a-niche-brand-seaweed-is-taking-plastic-out-of-stadiums-and-sandwich-bo
- Packaging Europe. Dutch Government names Notpla’s seaweed-based packaging the ‘first and only’ plastic-free material. https://packagingeurope.com/news/dutch-government-names-notplas-seaweed-based-packaging-the-first-and-only-plastic-free-material/10561.article
- Phys.org. ‘Trash has value’: Kenyan inventor turns plastic into bricks. https://phys.org/news/2022-03-trash-kenyan-inventor-plastic-bricks.html
- Euronews. Meet the Kenyan woman turning plastics into bricks. https://www.euronews.com/culture/2023/09/25/meet-the-kenyan-woman-turning-plastics-into-bricks
- Mezyan. Five Questions That Pressure-Test Carbon Data Before a Buyer, Bank, or Auditor Does. https://mezyan.ch/verify-carbon-data-five-questions/
