Grönska is a Swedish tech-company that has been developing, building, and testing vertical farming technology since 2014. With a vision to make the city self-sufficient through sustainable greens and by supplying food for a growing population without consuming the planet's resources. Their first system was about the size of a van. In 2018, Grönska inaugurated one of Europe's largest vertical farms on the outskirts of Stockholm. Read more on the company in this Verticalfarmdaily article.