Many entrepreneurs who submit their idea to the Postcode Lottery Green Challenge are inspired to make parts of our everyday life more sustainable. Here are some examples of winners, finalists and nominees that show us how we can make our own contribution to a greener world.

Peerby: World leader in sharing stuff

(NL, runner-up in 2012)

Peerby allows you to use everything you need without buying it and throwing it away later or cluttering your storage space. With the added bonus of getting to know your neighbours. Founder Daan Wedderpohl was inspired to connect people, make a real contribution and increase efficiency. Why buy something when you can borrow it? The sharing platform is already available in The Netherlands, Belgium, the UK, and Germany and currently expanding into the United States.


HomeBiogas: Cooking gas from your own backyard
(IL, finalist 2016)

HomeBiogas introduced a revolutionary backyard biogas system that transforms your household waste into clean energy. The appliance converts food leftovers and animal manure into clean cooking gas and liquid natural fertilizer. Founders Yair Teller and Oshik Efrati were determined to make household biogas an efficient, durable, and modern technology. On average, the system produces up to 2 hours of cooking gas each day – the perfect amount for three meals. HomeBiogas systems also benefit vulnerable communities and are set up in refugee camps and remote off-grid locations, where people deserve access to clean and healthy cooking conditions as well.


Perfect Day: Make milk without a cow
(USA, runner-up 2015)

What started in 2014 with two guys, a big idea, and a shared passion for cheese, has quickly grown into a company on a mission to create a world of delicious animal-free dairy products. With Perfect Day Ryan Pandya and Perumal Gandhi make milk from cell culture and mitigate the impact that milk has on land, energy, and water use. Because there are no animals involved, the process is highly efficient and low cost without compromising on the taste. Perfect Day expects to bring their products to supermarket shelves in late 2017, so stay tuned!


Onora: A conscious goodbye
(NL, nominee 2015)

Onora is a new player in a traditional market: the funeral industry. Founded by Marieke Havermans, the company produces ecological coffins from biomass. They are fully biodegradable and turn into harmless compost. Following Onora’s philosophy "from Cradle to Grave" coffins return to nature. Using a mould allows the coffins to be produced with 45% less material than a traditional coffin and to keep manufacturing costs at a minimum.

Evrnu: Turn yesterday’s clothes into fibres of tomorrow
(USA, nominee 2015)

Textile waste is rapidly growing and our natural resources are quickly disappearing. Evrnu created a revolutionary carbon negative fiber technology that converts post-consumer textile waste back into high quality fibres. It uses a staggering 98% less water to make cotton products. Evrnu triggers new ways of thinking about the lifecycle of the clothes we wear and recently partnered with Levi's to make a pair of 511 jeans out of five old T-shirts.


Coldhubs: Keeping food cool
(NG, nominee 2015)

In developing countries, 45% of food spoils mainly due to lack of cold storage. Fresh fruits, vegetables and other perishable food start to deteriorate as soon as they are harvested. Cooling significantly slows this down, thereby increasing the storage life of the produce. Nnaemeka Ikegwuonu invented ColdHubs, a modular, solar-powered walk-in cold room, for 24/7 off-grid storage and preservation of perishable foods. It offers farmers a flexible pay-as-you-store subscription model. Energy from solar panels on the roof feed the refrigerating unit.