CleanFiber Funding, Investors & Competitors

Fortera is a Sunnyvale-based materials science company developing carbon-negative cement additives that mineralize CO2 into concrete during production. Founded in 2022, its SkyMaker process captures flue gas from cement kilns, producing aggregates that replace 10 percent of traditional clinker. Fortera pilots with manufacturers in California, aiming to cut industry emissions by gigatons annually through scalable electrochemical tech.

First Solar designs and manufactures solar photovoltaic panels, modules, and systems for use in utility-scale development projects. The company's solar modules use cadmium telluride to convert sunlight into electricity. This is commonly called thin-film technology. First Solar is the world’s largest thin-film solar module manufacturer. It has production lines in Vietnam, Malaysia, the United States, and India.

Nextpower (and its subsidiaries) is a leading provider of intelligent, integrated solar tracker and software solutions used in utility-scale and distributed generation solar projects around the world. Nextpower's products enable solar panels in utility-scale power plants to follow the sun’s movement across the sky and optimize plant performance. Nextpower has operations in the United States, Mexico, Spain and other countries in Europe, India, Australia, the Middle East, Africa, and Brazil.

Northvolt was a Swedish battery manufacturer founded in 2015 to build the world's greenest, sustainably sourced lithium-ion batteries. Powered entirely by renewable energy (wind and hydro), Northvolt aimed to produce batteries with the lowest carbon footprint globally. Backed by heavyweights like Volkswagen and Goldman Sachs, it aimed to supply European automakers. However, facing severe scaling challenges and massive debt, the company filed for bankruptcy in 2024–2025.

Kraken is a London-headquartered customer engagement platform for energy, water, and broadband providers across Europe and North America. Its technology stack includes billing, CRM, self-service portals, and smart metering analytics to streamline operations. Kraken serves utilities like Octopus Energy and OVO, enabling net-zero transitions through demand response and EV charging management. The platform processes millions of customer interactions monthly, supporting regulatory compliance in deregulated markets.

Tongwei is the world's largest polysilicon producer and a leading solar cell and module supplier. The solar business contributed more than 60% of revenue in 2024. In addition, Tongwei runs a feed and food business, which made up 35% of revenue in 2024.

Redwood Materials is a Sparks-headquartered battery recycling company founded in 2017 that recovers over 95 percent of critical materials like lithium, nickel, and cobalt from end-of-life electric vehicle batteries and manufacturing scrap. Operating a closed-loop facility in Nevada, it supplies refined metals to battery producers such as Panasonic and Ford while deploying second-life energy storage systems. The company processes thousands of tons monthly, reducing reliance on virgin mining.

Jinko Solar is the largest Chinese solar module manufacturer by global shipment in 2024. Jinko's products are distributed across nearly 200 countries and regions. The company operates a vertically integrated production process, spanning from solar wafer and cell manufacturing to module production. Jinko's N-type cell capacity is industry-leading in scale.

Enphase Energy is a global energy technology company. It delivers smart, easy-to-use solutions that manage solar generation, storage, and communication on one platform. The company's microinverter technology primarily serves the rooftop solar market and produces a fully integrated solar-plus-storage solution. Enphase derives a majority of revenue from the United States.

CSI Solar is a leading Chinese solar module producer, ranking seventh by solar module shipments in 2024. The company's products are available in over 160 countries and regions. CSI operates a vertically integrated production process, encompassing solar wafers, cells, and module production.

Premier Energies Ltd is an integrated manufacturer of solar cells and solar modules. The company mainly engages in the manufacturing and trading of solar modules, solar cells, and solar accessories. The majority of the company's revenue comes from the sale of these products and silicon wafers. Additionally, the company earns revenue from the sale of manufactured solar modules and from construction and project-related activities. Geographically, the company generates almost all of its revenue within India.

Trina Solar is one of the top four Chinese solar module producers. Trina's products are available in over 170 countries and regions. The company operates a vertically integrated production process, covering everything from solar wafers and cells to complete modules.

Indigo is a Boston-headquartered agricultural technology company enhancing crop sustainability and yields through microbial seed treatments. The firm develops products like carbon farming programs and grain contracts for farmers in the US Corn Belt and beyond. Indigo markets microbiome-based inoculants to reduce fertilizer use and improve soil health on millions of acres.

Shanghai Aiko Solar Energy Co Ltd is engaged in research, manufacturing and sales of crystalline silicon solar cells. The company's products include C&I Scenario COMET Series, Residential Scenario NEOSTAR Series, Lightweight module AIR and Utility Scenario STELLAR Series.

Jetti Resources is a Denver-headquartered mining technology company founded in 2014 that deploys catalytic hydrometallurgy to leach copper from chalcopyrite ores previously deemed uneconomic. Its process boosts recovery rates to 85% at sites like Kennecott and increases output by 30% without new infrastructure. Backed by $60 million from Newmont and Mitsubishi, Jetti treats 100 million tons annually across North and South America.