2016 Postcode Lottery Green Challenge finalist HomeBiogas introduced a revolutionary backyard biogas system that transforms your kitchen waste into biogas. Recently, the company developed the HomeBiogas 2.0, which is an even more efficient and affordable model. We talked to co-founder Oshik Efrati to catch up on how things are going at HomeBiogas.

The Dutch company Fleet Cleaner was a finalist in the Postcode Lottery Green Challenge in 2015 and is continuing its efforts to become one of the leading players in the ship hull cleaning industry. The company strongly believes that robotic hull cleaning is the future. We talked to co-founder Cornelis de Vet to hear how their ambition to become the default party for ship cleaning worldwide is taking shape.

For the second year, Linda Vermaat works as start-up scout for the Postcode Lottery Green Challenge. During the submission period from 1 March until 1 June, she literally roams the earth in search of bright people with smart ideas. Recently, she travelled to South Africa and South America and her next stop is China. In between her trips we were able to meet up with her to hear about how it’s going.

A finalist of the 2014 Postcode Lottery Green Challenge, Dutch technology provider Bluerise has developed cutting edge energy technology to harness the ocean’s power. Their Ocean Thermal Energy Conversion (OTEC) is a renewable energy technology that uses the natural temperature difference in oceans to produce clean, reliable electricity, day and night, all year-round. It can become a substantial part of the future sustainable energy mix. We talked to Diego Acevedo about Bluerise’s commercial rollout and their first projects in the Caribbean.

As of today, the 12th edition of the Postcode Lottery Green Challenge has kicked off. Green start-ups from all over the world can submit their green business plans. There is a total of €1 million in combined prize money available for the five best start-ups, of which €500,000 is intended for the winner. The competition has expanded to become one of the largest annual sustainability competitions in the world.


Land Life Company’s main goal is to restore 2 billion hectares of degraded land by planting trees. In about half of this land nature will not return without human intervention. We talked to Charlotte Jongejan, Head of Marketing & Communications, about how the company is growing. And how it managed to create a fruitful business model from the demand for more meaningful carbon offsetting.

Start-up scout Linda Vermaat of the Postcode Lottery Green Challenge reaches all corners of the globe to promote our sustainable competition. She has some recommendations for any green initiative to improve their entry and impress the jury. Learn from her insights and find out why it is a great idea to submit your proposal for the 2018 edition of the Postcode Lottery Green Challenge.

The Dutch start-up Ioniqa Technologies from Eindhoven was a finalist of the Postcode Lottery Green Challenge in 2016 and won €100.000. Ioniqa Technologies is the inventor of a circular solution for all PET waste in the world, based on a sound business case. We spoke to founder and CEO Tonnis Hooghoudt to hear about Ioniqa’s exciting recent developments, since participating in the Postcode Lottery Green Challenge.

After participating in the Postcode Lottery Green Challenge, winners and finalists get the opportunity to apply for additional investment from the Postcode Lottery Green Challenge Fund, managed by DOEN Foundation. We talked to Daan Laméris, investment manager at DOEN, about how the fund can enable companies to grow and scale up.

The Rwandan start-up EarthEnable won the Postcode Lottery Green Challenge 2017. During the final, co-founder Gayatri Datar (32) impressed the international jury with her sustainable alternative for cement to replace dirt floors. As the winner, she received a cheque of €500,000 to further develop her green innovation. Two months after the final we talked to Gayatri, to hear what has been happening since winning the competition.