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People working a greenhouse

Bringing waste to life on an industrial scale

Food
Tech
green transition
climate tech

What if industrial waste heat could feed a nation? In Skåne, Southern Sweden, one company is doing just that – turning ‘what ifs’ into reality, while providing hope that a more resilient future beyond a take-make-waste culture is possible.

 

Climate tech company WA3RM, based in Malmö, southern Sweden, is transforming sustainable food production in Sweden by redefining how we think about industrial byproducts like waste heat.

Founded on the belief that climate impact and economic growth can go hand in hand, “we don’t see waste heat as waste,” says WA3RM’s Chief Communication Officer, Niklas Rydberger, “we see it as fuel for something better!” 

And better it certainly is – both for the planet and for Sweden’s growing appetite for self-sufficiency in food production.

Portrait of Niklas Rydberger - WA3RM

The food system is challenged. We need to find clever new ways to feed an ever-growing world population. – Niklas Rydberger, Chief Communication Officer, WA3RM 

“The world needs behavioural change – we need to think circular, not linear,” Niklas explains, adding that in a world where “the food system is challenged we need to find clever new ways to feed an ever-growing world population”. WA3RM is designing smart ways to repurpose wasted resources while also creating new business opportunities and jobs. “This is how we can achieve joint industrial and societal symbiosis – at scale!” Niklas says.

Moving from waste to taste

WA3RM’s vision for closing the waste loop and driving circularity forward has already been realised at one of their projects – Regenergy Frövi in Lindesberg, Sweden, where waste heat from Billerud’s carton board factory gets fed to a greenhouse the size of 20 football fields, housing 250,000 tomato plants – producing almost every tenth tomato consumed in Sweden!

“The Regenergy Frövi project demonstrates in real-time how waste heat from the pulp & paper industry can replace the need for fossil fuels, making it possible to grow fresh tomatoes all year round in Sweden with a fraction of the emissions of conventional greenhouses in Europe,” says Niklas.

Tomatoes in a greenhouse

RESULT: 87% cut in fossil fuel use

A recent lifecycle analysis comparing WA3RM’s greenhouse-grown tomatoes to those from conventional facilities in the Netherlands found an 83% reduction in climate impact and a staggering 87% cut in fossil fuel use per kilogramme of tomatoes. And it’s not just the tomatoes that are blossoming. The Frövi project supports local job creation, community development, and a ripple effect of regional innovation.

How  their solution works

“At WA3RM, we take action from developing an idea to reuse industrial streams, designing and building a facility to structuring the finance and managing the asset,” explains Founder & Chief Market Development Officer, Fredrik Indebetou. “What is new about our solution is the scale and the business model that we use to make these ideas a reality

“Waste is streamed from the anchor industry to an adjacent, purpose-build facility where it can be used as a resource in new industrial production of vegetables, protein or other applications. Essentially, all by-products are evaluated for a possible loop.”

Benefits of a ‘bringing waste to life’ approach

Using waste streams, including waste heat and CO2 for food production is not an entirely new concept. However, most organisations “work within their box”, says Niklas, explaining that WA3RM was created to bring about big scale positive impacts, showing that industry is a big part of a workable and profitable solution to the challenges facing our planet. But you need a circular solution based on many joint efforts.

“Warming greenhouses with waste heat can mean more locally grown food, less need for long-distance transport, and smarter use of water resources – not to mention the creation of jobs. More projects of this kind could lead to Scandinavia could becoming a major grower (and even exporter) of fresh produce, just like Southern Europe is today,” Fredrik adds.

WA3RM’s model is very aligned with Sweden’s national food strategy – boosting domestic production to be able to strengthen resilience and reduce dependency on exports, and helps bridge gaps between commercial viability, national policy goals and climate positive impact.

But what are some of the challenges in making the shift to circular thinking? 
“Having a shared vision is important,” says Niklas, “as well as being able to show evidence of what is possible. Fredrik adds: “Companies also need to already think in the design phase of how to be circular and better use resources. Plus, we need to be able to connect all the actors in circularity to successfully build future ready production systems – at scale.”

Portrait of Fredrik Indebetou - WA3RM

“WA3RM’s business model rooted in science from material research infrastructure,  the European Spallation Source and brought to life through proven technologies and know-how." – Fredrik Indebetou, Founder & Chief Market Development Officer, WA3RM

What’s growing on the horizon?

WA3RM’s vision is to help the Nordics become a centre for vegetable production by helping anchor industries, such as Paper mills, chemical factories or other industries that have a lot of waste streams to be more circular. Their success in Frövi has paved the way for further expansion. The company plans to develop additional greenhouse projects across Scandinavia, including collaborations with data centres to utilise their excess heat for sustainable agriculture.

And they are not stopping with tomatoes or Scandinavia. Their success in Frövi has paved the way for further expansion. Their model is scalable and sector-fluid across many geographies. Imagine aquaculture tanks warmed by a data centre exhaust, or mushroom farms powered by residual heat from manufacturing! It's all part of a regenerative economic model, where the output of one system becomes the fuel for another – closing loops, creating value, and restoring balance.

At the end of the day, WA3RM’s message is clear: in a world facing mounting climate and food security challenges, the solutions are not only out there—they’re already working. You just need to look a little further north.