Breakdown by field
Energy (48.9% – 426 projects)
Rocket stove, solar oven, wind turbine, biogas, …
Food (33.7% – 294 projects)
Lactofermentation, Spirulina, Mushrooms, …
Water (29.6% – 258 projects)
Biosand filter, ram pump, solar desalinator, phyto-purification, …
Waste (27.1% – 236 projects)
Vermicomposting, Black Soldier Fly, Plastic recycling machines, …
Farming (25.8% – 225 projects)
Permaculture, Hydroponics, Mushroom cultivation, …
Housing (25.1% – 219 projects)
Soil-straw building, bioclimatic houses, yurt, …
Materials (19% – 166 projects)
Myco-materials, Cob, Vegetable Leather, …
Tools (15.6% – 136 projects)
Pedal-powered machines, hand-tools, DIY farming machines, …
Hygiene (13.4% – 117 projects)
Composting toilets, shower loop, feminine protection, …
Health (10% – 87 projects)
Herbalism, natural cosmetics, …
Mobility (8.4% – 73 projects)
Cargo bike, sailing, biodiesel, …
Communication (4.4% – 38 projects)
Ham radio, local internet, recycled computer, …