Inside a remote corner of Iceland, far from the hustle and bustle of the capital city Reykjavik, lies a futuristic farm like no other. Nestled in the shadow of Iceland's largest geothermal power station, this massive warehouse houses a cutting-edge indoor farm that cultivates algae for food. As I step inside, I am greeted by a peculiar pink-purple glow that illuminates the entire space. Lit screens buzz with activity, while cylindrical columns of water bubble away, nurturing a futuristic crop of microalgae.
Vaxa Technologies, an innovative company based in Iceland, has revolutionized the way we think about food production by developing a unique method to nurture these microscopic aquatic creatures using electricity and resources from the nearby power station. As I am guided through the plant by general manager Kristinn Haflidason, he explains the process in detail, highlighting the potential of microalgae as a sustainable and nutritious food source.
While seaweed, also known as macroalgae, has been consumed by humans for centuries, its microscopic sibling, microalgae, remains a less popular food source. However, scientists and businesspeople are now recognizing its potential and exploring ways to incorporate it into our diets. The Vaxa complex, located just 35 minutes from Reykjavik, produces the microalgae Nannochloropsis for human consumption as well as feed for fish and shrimp farms. Additionally, they cultivate Arthospira bacteria, also known as blue-green algae or spirulina, which is used as a nutritional supplement, culinary component, and food colorant.
These tiny creatures play a crucial role in the ecosystem by photosynthesizing, converting light energy into carbon dioxide and oxygen. Mr. Haflidason explains, "The algae eats CO2, or converts CO2 into biomass. It's carbon negative." This unique process makes the Vaxa plant one-of-a-kind, as it is the only location where algae production is combined with a geothermal power plant that generates clean energy, provides water for cultivation, and even recycles CO2 emissions.
The environmental impact of Vaxa's spirulina production has been studied by experts like Asger Munch Smidt-Jensen, a food technology consultant at the Danish Technology Institute. Their research found the production to have a relatively low footprint in terms of land and water use, as well as a slightly negative carbon footprint. Mr. Munch Smidt-Jensen emphasizes the importance of utilizing low impact energy sources to produce energy-intensive products, highlighting the potential of locations like Iceland for such ventures.
As I ascend onto an elevated platform surrounded by modular units known as photo-bioreactors, I am amazed by the intricate process of growing microalgae. These reactors use red and blue LED lights to power the growth of microalgae, providing them with the specific wavelengths of light they need for photosynthesis. The entire system is meticulously regulated and optimized by machine learning, ensuring maximum efficiency in crop production.
Vaxa's plant is capable of producing up to 150 metric tons of algae per year, with plans for expansion in the future. Mr. Haflidason believes that microalgae production can help combat global food insecurity, as these crops are rich in essential nutrients like protein, omega-3s, and vitamin B12. Many other companies are also investing in the potential of microalgae, with the industry predicted to be worth billions in the coming years.
Despite the promising future of microalgae, challenges remain in making it a mainstream food source. Mr. Munch Smidt-Jensen notes that further development is needed to improve the texture and taste of microalgae, as well as address sociological concerns about consumer acceptance. Food scientist Malene Lihme Olsen suggests incorporating microalgae into existing products like pasta or bread to enhance taste and appeal, paving the way for wider adoption in the future.
As I wrap up my tour of the algae facility, I am offered a sample of the processed algae, which resembles a dark green sludge. After some hesitation, I try it and find the flavor neutral and the texture similar to tofu. Mr. Haflidason reassures me, "We are absolutely not proposing that anyone should eat green sludge." Instead, the processed algae is used as an ingredient in various dishes, including bread and smoothies, offering a nutritional boost without altering the taste of the food.
In conclusion, the future of food production is evolving, with innovative solutions like microalgae cultivation paving the way for sustainable and nutritious sources of food. The Vaxa plant in Iceland stands as a shining example of how technology and renewable energy can be harnessed to create a more environmentally friendly and efficient food system. As more companies and researchers invest in the potential of microalgae, we may soon see a shift towards a more diversified and sustainable food supply that benefits both people and the planet.