Top Clean Energy Startups in 2026

Ultracapacitors with * 4x higher power density * 2x higher energy density than any competitor. This means we lower the costs 50-80% by using less materials, while at the same time offering our customers 2-4x smaller and lighter devices. This will solve crucial energy storage problems by re-generating energy, that would otherwise be lost, or providing peak or backup power in transportation, renewable energy, power quality and industrial sectors. Technology based on patented materials.

cKinetics provides solutions in the areas of: 1. Capturing market data to provide actionable insight, information and analytics 2. Creating and implementing a resource blueprint and improving process efficiency 3. Providing access to capital for innovation and sustainability Some of our products can be seen at: comMIT.cKinetics.com CaliforniaCarbon.info

Electrification, automation and digitalization require innovative solutions: Discover Siemens as a strong partner, technological pioneer and responsible employer.

8Minutes helps homeowners & businesses switch to clean energy at no upfront cost by installing Solar, and simply having our customers pay for clean energy at a lower rate than what they pay to their utility company.

Flow is “Github for hardware”. We’re building a core design/test collaboration platform for the hardware engineering industry. Flow helps Rockets, Robots and Nuclear reactors get to market years ahead of schedule and save billions in R&D costs. Our mission is to bring agile software development philosophies (CI/CD, pull/push, branching) to an industry that is desperate for a better solution. Flow is loved by the fastest-moving hardware teams in the world. They are solving fundamental problems in space travel, energy, and air transportation. You will get to learn about how these things are designed as well as help build the modern playbook for the entire industry.

Professional services and turnkey building automation retrofits for commercial customers

We build and deploy dense networks of cloud-connected "KOKOpoints" inside local corner stores, which serve as consumer access points for goods and services delivered in partnership with major suppliers. Our first consumer solution is a liquid ethanol cooking fuel, which delivers significant cost savings and quality of life improvements in the multi-billion dollar market for urban cooking fuel. This fuels solution is delivered through a Kenyan operating partnership with Vivo Energy, the company which owns and operates Shell-branded fuels distribution infrastructure across Africa.

Fuel accounts for nearly 40% of operating costs in the Trucking Industry. For those long haul, over-the-road delivery fleets who face large costs associated with diesel gasoline, Hyliion is developing an add-on hybrid system for tractor-trailers that will reduce their fuel consumption by over 30% with an ROI of less than 1 year. Our mission is to supply the trucking industry with a unique product that will reduce fuel consumption and improve our energy footprint. The Hyliion System uses regenerative braking to capture power when the vehicle is slowing down and reuses it to accelerate. The Hyliion System is a win-win-win: a steward for the planet, people, and sustainable profit.

We are from Plano West Senior High School and taking Engineering Design and Development from Project Lead The Way course. We are currently seeking an investor to help us fund our project. My team is creating a solar lantern that is meant for developing regions of the world that is constructed using very low cost materials to distribute to the people at a low U.S. price of $30-$50. The highest amount actually needed is $150, but this website is causing us to put $1000 as a minimum.

Yotta is the first truly-integrated solar + storage solution. We're creating more opportunities to deploy solar by engineered a radically streamlined, end-to-end solar and storage solution that can grow with your future power needs.