September Climate Startup Deal Share by 4WARD.earth ⚡🚰 🚲 ♻️
Discover climate companies supporting renewables development, cleaning wastewater, managing emissions, and enabling a circular economy.
4WARD Editor's Note
Welcome to this month's climate deal flow roundup by 4WARD.earth. We've identified 9 promising climate and sustainability startups across key sectors that may be actively raising funds or considering a raise in the coming months who might be worth reaching out to :)
🚀 Featured Sustainability Startups
Sector: Clean energy
🇺🇸 SparkAI (Pre-seed ) YCombinator-backed Spark AI speeds up utility-scale and distributed clean energy development through search engine and workflow solutions. Their AI-powered planning tool screens thousands of zoning and permitting regulations, project filings, and local sentiment in seconds (no need to ctrl+F ever again!).
🇺🇸 Noon Energy (Series A) Noon Energy offers ultra-long duration energy storage using abundant, carbon-based storage media. Their modular storage system can provide 100+ hours of clean power with with ultra-low cost (< $20/kWh), domestically sourced materials to enable the clean energy revolution. Connect with them at their upcoming event at New York Climate Week on September 23rd!
Sector: Water
🇺🇸 Roca Water (Pre-seed) Roca Water is building a new model for wastewater treatment to turn pollutants into high value products. They recover critical materials from complex waste streams and create lasting economic returns by unlocking new revenue sources.
🇺🇸 Coflux Purification (Pre-seed) Coflux uses a breakthrough catalytic technology to both capture and destroy forever chemicals (PFAS) at the source. Their on-site wastewater treatment entirely prevents PFAS contamination in local communities and allows manufacturers to stay ahead of PFAS regulation.
Sector: Carbon
🇪🇸 Ciclogreen (Pre-seed) Ciclogreen’s technology designs, implements, and monitors sustainable mobility plans. Organizations are empowered to reduce carbon emissions from employee commutes from work and demonstrate commitment to sustainable development goals. Ciclogreen is already trusted by over 50 industry-leading organizations like Iberostar, Ulma, and BBVA.
🇩🇰 Ambient Carbon (Seed) Ambient Carbon destroys methane at the source through a novel photochemical system to mitigate greenhouse gas emissions from agriculture, wastewater treatment, and biogas production. Their recent field trial eliminated 90% of the methane from the air in a Danish dairy barn.
Sector: Circular Economy
🇮🇩 Collabit (Seed) is a marine biotechnology company that upcycles fish by‑products into high‑value ingredients such as collagen and peptides, applying a 100% utilization circular economy model to reduce waste, enhance nutrition security, and drive sustainable marine innovation.
🇸🇬 N&E Innovations (Pre-Series A) is a cleantech company transforming food waste into a patented plant‑based antimicrobial agent that is non‑toxic, food‑safe, and versatile, extending shelf life, improving hygiene, and supporting circularity across food industries.
Sector: Sustainable Consumption
🇲🇾 Plixstar (Seed) is a sustainability‑driven e‑commerce marketplace that curates eco‑friendly goods—from household essentials and fashion to biodegradable packaging—ensuring every product meets verified environmental values, empowering consumers and businesses to adopt greener lifestyles.
About 4WARD’s Climate Deal Share: 4WARD.earth helps connect purpose-driven capital with high-impact climate & sustainability solutions.
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Disclaimer: This newsletter is for informational purposes only and does not constitute investment advice. All investment decisions should be made based on independent research and due diligence.
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