Meet Our Members: Introducing Greentown’s Newest Startups of Q4 2023

Sixteen startups joined our community in Q4 2023, working on innovations as diverse as low-emission steel production, hydrogen electrolyzers, and lightweight, flexible solar panels.

We’re thrilled to support these groundbreaking climatetech startups—let us introduce you!


Clean Crop Technologies’s proprietary Clean Current technology combines food-grade gasses and electricity to remove contaminants from seed and food surfaces, improving food safety and reducing food waste.


Ohm Analytics’ data platform for solar, storage, and broader electrification aggregates a proprietary database of projects in the U.S. based on thousands of sources.


Advanced Ionics’s electrolyzers use up to 50% less electricity per kilogram of hydrogen and work in an intermediate temperature range—above liquid water but below expensive, superheated steam. The startup was previously a Greentown Go Energize 2022 participant.

Caravel Bio is developing a novel synthetic-biology platform that uses microbial spores and enzymes to create catalysts that are long-lasting and can withstand extreme conditions and environments. It’s participating in Greentown Go Make 2023.

Circularise develops a blockchain platform that provides digital product passports for end-to-end traceability and secure data exchange for industrial supply chains. Circularise is returning to Greentown as part of Go Make 2023, the startup’s third Greentown Go program.

Corumat, a Go Make 2023 participant back for its second Go program, converts organic waste into high-performance, insulating, greaseproof, and biodegradable packaging materials.

FluxWorks’ non-contact, lubrication-free, highly efficient magnetic gears can be used everywhere from outer space to under the sea.

Glimpse provides a scalable and collaborative solution to visualize battery scans and continuously monitor key battery-design features.

Hertha Metals is developing technology to cost-effectively produce steel from low-grade iron ores with 98% lower CO2 emissions than the conventional process.

Maple Materials develops a low-cost electrolysis process to split carbon dioxide into graphite and oxygen. The startup is part of the Go Make 2023 cohort.

Universal Matter, a Go Make 2023 participant, develops a proprietary Flash Joule Heating process that converts carbon waste into high-value and high-performance graphene materials to efficiently create sustainable circular economies.

Verde Technologies is building the next generation of lightweight, flexible solar panels for mass industrial and commercial adoption using a mineral called perovskite, an abundant and high-performing solar material.

Resiliency + Adaptation

GigaDAC maximizes the efficiency of building and operating direct-air-capture (DAC) airflow systems at gigaton scale.

Net Zero Carbon offers carbon-footprint-baseline measurement services; comprehensive decarbonization-strategy assistance; expert guidance for improving energy efficiency and generating electricity from heat sources; and comprehensive emissions-offset consulting and assistance.


Pirl is accelerating humanity’s transition to a future of clean, electric transport by developing next-generation EV-charging infrastructure.

VIA BioFuels produces and sells premium drop-in fuels and chemical feedstocks—based on bio-produced molecules—to the international transportation, aviation, and chemical industries.