Bluerise develops solutions to harness the Ocean’s power.  Bluerise is a technology provider and project developer of Ocean Thermal Energy solutions. The thermal energy stored in the tropical ocean can be used to generate sustainable electricity, cooling, and fresh water. They specialize in OTEC (Ocean Thermal Energy Conversion), SWAC (Seawater Air Conditioning) technologies and related Deep Sea Water applications.


StoneCycling makes construction materials from waste. They analyze different kinds of waste like construction or industrial waste, then look at the potential of the materials, then make new recipes from it and eventually make bricks from it in a comparable way as they make traditional bricks. The bricks comply to the same requirements as traditional ones.

I interviewed Ward Massa who is one of the co-founders of StoneCycling. Ward explained how the company was founded, what the company is about and what his vision on sustainability is.



Planq is a design studio founded by Anton en Dennis Teeuw. Planq’s designs are inspired by nature and environmentally consciously. They do that by using locally available resources.

I interviewed Anton en Dennis at The Set Company, where they have their workplace. In this interview they tell about how Planq was founded, what they are making and share their vision on sustainability.


Seepje is 100% natural and fair trade detergent from Nepal. They use the Sapindus mukorossi-fruit super peel which gives a natural form of soap in contact with water.

Seepje’s missions is to make the world cleaner and more beautiful! Seepje is a social enterprise. When you wash your clothes with Seepje they take of the conservation of nature in Nepal. They also there improve the working and living conditions. The company works together with Siza, a organization which provides work to people with mental and/or physical disabilities. The people who work there, called the “waskanjers” or “washing heroes” have an important role in the production of Seepje.

I interviewed Jasper, one of the co-founders about how the idea for Seepje was born, what they are doing and asked him about his vision on sustainability.

Visit their website: 

NOTE: The audio in this video is not perfect. I’m still learning every day and this won’t happen again.]


RotterZwam is an initiative based in Rotterdam, Netherlands. They collect coffee waste locally and grown oyster mushrooms on it. The mushrooms are then sold to local restaurants etc. The mushrooms are a delicatesse and can be used in pasta, soup and bitterballen.
The organization was founded three years ago by Mark & Siemen, also known as urban farmers. Mark had 6 years experience in green business but saw that this was not enough and wanted to change things radically.

Coffee is after oil the most traded commodity in the world and RotterZwam’s aim is to go from waste-reduction to food-production. Every week they collect 1000 to 1500 kilo of coffee waste, this is not even 1% of the total amount of the city’s waste. It takes about three weeks to grow mushrooms and from every bag they can harvest mushrooms three times.

RotterZwam is based in Tropicana. This used to be an iconic swimming pool and had been abandoned for a few years. Mark and some other guys decided it was time to give the swimming pool a new purpose and founded BlueCity. Now the location is home to various sustainable companies.

In this interview Mark Slegers tells about the organization, their goals and the why. Melissa van der Beek explains how the process works.