Sustainability Startups funded by Y Combinator (YC) 2026

Vista designs, finances, installs, and manages energy storage and solar at commercial, industrial, and multifamily properties for $0 upfront, helping businesses save up to 30% on their energy bills. The founding team previously worked at SpaceX, Rocket Lab, NASA and Firefly.

Our mission -To ensure current and future generations have access to clean soil, water & air. -To protect and restore earth's beautiful and diverse ecosystems. -To undo the harm of industrial activity on the planet and ensure future industrial activities are more sustainable. Our research -We develop new bio-based solutions that break down and remove toxic chemicals from the environment.  We also develop bioreactor based solutions which remove toxins from industrial production pipelines, ensuring contaminants are never released into the environment. -To do this, we've partnered with Nature. Specifically, we have harnessed the power of one of Nature's smallest but most powerful technologies: enzymes. Enzymes are everywhere. They break down the food in your stomach, remove dirt from your clothes, and make our beer. At BluumBio, we look for enzymes found in bacteria, algae, plants and other living organisms that naturally degrade toxic chemicals. We then make these enzymes work better in the lab and come up with develop new applications for these technologies.

Instacrops is a simple dashboard that helps farmers maximize their crop yield. We give farmers IoT sensors to put in their field. We combine that data with satellite and drone data to provide analytics on the health of their farms. Farmers use this to increase their crops yield by 12% on average. We’re live on 300+ farms across Latam and have reached more than $200.000 in monthly revenue, growing 2X YoY. There’s 2.9 billion acres of farmland in Latin America which makes this a $50 billion market. We’re instacrops. We’re bringing data driven decisions to farmers worldwide

Nobell Foods is creating cheese and other dairy products from plant-derived dairy proteins for the 99% of people who are unwilling to compromise on taste and price.

C16 Biosciences is decarbonizing consumer products supply chains by producing next-generation ingredients. The company's biomanufacturing platform produces better performing, more sustainable alternatives to oils and fats, and their first product is an alternative to palm oil. The company owns and operates Palmless™ alternative fats and oils.

Revolutionizing building management. Our platform allows building owners to deliver better customer service via custom software. We have deployed this in a 1M sq.ft. Class A office building, where we were able to lower operational expenses while improving tenant satisfaction.

GiveMeTap is a social enterprise. Our mission is to make clean drinking water available to everyone, everywhere. We create stainless steel water bottles, and each bottle funds 5 years of clean water for someone in Africa. When you get a GiveMeTap bottle, you also have access to the free-water network of cafes and shops who give free tap water to people on the go. No questions, no hassle. We build water projects in remote villages and elect a water committee to run the maintenance of the water. So far we have made an impact in Namibia, Malawi, and Ghana to bring clean water for the first time. We like to think of this as ‘Water for You, Water for Everyone’. We help awesome companies create custom bottles for their staff, customers, and events so that they can stay hydrated, reduce plastic waste and help fund water projects. Our partners include: Deloitte HSBC YCombinator Google TED Flexport Legal & General Richard Branson's The Lodge, Switzerland Cambridge University Want to get your company involved? Visit http://bit.ly/2j2Ef64 Water for you. Water for everyone.

(acquired by Brondell in 2022) At Nebia we build innovative and impactful products that improve how people use water in their daily lives. Through thoughtful reinvention of everyday interactions, we empower people everywhere to collectively make a greater impact with their most basic daily rituals. We started with the shower. The Nebia shower embodies the highest standards of experience, design, engineering and water and energy use. With water savings up to 70% compared to traditional showers, Nebia was designed to make a meaningful impact without compromising on experience. At the heart of our products is our unwavering dedication to developing groundbreaking sustainable solutions that stand the test of time. Every new iteration is made to solve a complex engineering challenge that has limited innovation for over a century. Our investment in R&D and product development is second only to our investment in the people who are making it possible. After several years working behind the scenes, we are extremely proud of what we have recently achieved: - $10m raised on Kickstarter - Products in 100,000 homes - 500+ million gallons of water saved (c. 2022) - 27 million kWh (27 GWh) of energy (approx. energy to heat 2,700 U.S. homes in one year)

Rosa Foods, maker of Soylent and Coffiest, is a pioneer in food technology, delivering nutritionally-complete staple meals that provide all the essential nutrients required to fuel the human body. Rosa Foods believes in managing the Company and the product by never being complacent and staying on the cutting edge of food technology and nutrition. Working at Rosa Foods you’ll have a platform to build cool things that positively affect the world with fun and dedicated people. Rosa Foods products are produced with sustainability and efficiency in mind to create a convenient, nutritious, and affordable meal that is better for our health and the environment. We also have raised over $75M in funding from Google Ventures, Andreessen Horowitz, Lerer Ventures, and Y-Combinator. This enables us to offer the benefits of a larger organization while still maintaining the best qualities of a startup. You’ll be able to help grow our small creative team and contribute your ideas to build this exciting brand. The company is headquartered in Los Angeles, CA.