PRIME Coalition

PRIME Coalition is a not-for-profit venture capital firm established in 2014 and based in Cambridge, Massachusetts. As a 501(c)(3) public charity, it focuses on making minority early-stage investments in companies, particularly in the cleantech, business services, and energy services sectors within the United States. The organization aims to support innovative ventures that are positioned to address pressing environmental challenges and promote sustainable practices. Through its investments, PRIME Coalition seeks to foster the development of technologies and services that can contribute to a more sustainable future.

Sarah Kearney

Founder and Executive Director

Lara Pierpoint

Managing Director

22 past transactions

Tandem PV

Series A in 2025
Tandem PV, Inc. is a manufacturer of advanced photovoltaic cells that combine perovskite and silicon technologies. Originally established as Iris Photovoltaics in 2016, the company rebranded in February 2018 and is headquartered in Palo Alto, California. Tandem PV specializes in mechanically-stacked perovskite and silicon tandem solar panels, which enhance solar panel efficiency significantly. By integrating metal-halide perovskite with existing silicon technology, Tandem PV aims to provide clients with improved performance and reduced installation costs, thereby increasing the overall value and market potential of solar energy.

Nitricity

Venture Round in 2025
Nitricity is an energy company focused on the production of renewable nitrogen fertilizers with zero carbon emissions. It specializes in creating electrified, climate-smart fertilizers, specifically nitric acid and ammonia, which can be utilized independently or together to produce ammonium nitrate fertilizer. This innovative approach aims to bring high-quality fertilizer products closer to farmers, allowing them to minimize wasteful runoff and optimize fertilizer application timing based on field readiness. By enhancing nitrogen delivery capabilities, Nitricity supports sustainable agricultural practices and contributes to environmentally responsible farming worldwide.

Noon Energy

Seed Round in 2021
Noon Energy is a company based in Palo Alto, California, focused on developing innovative flow battery technology for long-duration energy storage. Founded in 2018, the company aims to make intermittent renewable energy sources, such as solar and wind, more reliable by providing on-demand power. Its rechargeable battery utilizes low-cost energy storage media that separates energy and power capacity, enabling efficient long-duration storage without the need for mining precious metals. This approach supports the scaling of renewable electricity supplies, thereby reducing reliance on fossil fuels, minimizing pollution, and lowering emissions.

Sublime Systems

Seed Round in 2021
Sublime Systems specializes in decarbonizing cement through innovative technology that co-produces green hydrogen while significantly reducing emissions. The company employs an electrochemical process powered by clean, renewable energy, effectively eliminating carbon dioxide emissions without altering the cement's properties or chemistry. This approach allows builders and consumers to actively participate in the transition towards a sustainable and renewable future.

Via Separations

Grant in 2020
Via Separations, Inc. is focused on developing innovative membrane-based products for industrial liquid separation in challenging environments. Founded in 2016 and based in Somerville, Massachusetts, the company aims to address the significant energy waste in the chemical separation process, which accounts for 12% of U.S. energy consumption. By employing its advanced membrane technology, Via Separations can reduce energy use by up to 90% and enhance product output. Their highly selective and robust membrane filters replace traditional heat-based separation methods, contributing to industrial decarbonization efforts. The company is currently conducting pilot trials in pulp and paper facilities, with the goal of eliminating 100 million metric tons of CO2 emissions by 2050. Originating from MIT's Department of Material Science & Engineering, Via Separations has successfully scaled its technology and demonstrated working prototypes at a commercial level.

Clean Crop Technologies

Seed Round in 2020
Clean Crop Technologies, based in Haydenville, Massachusetts, specializes in food processing solutions aimed at enhancing food safety and reducing food waste. The company has developed a proprietary technology known as 'Clean Current,' which utilizes cold plasma generated from electricity and air to eliminate molds, toxins, and pests from grains and nuts. This method not only improves crop yields but also extends the shelf life of perishable foods without compromising their quality. Clean Crop's innovative approach is designed to be energy efficient and scalable, making it effective against a wide range of contaminants while leaving no harmful residues. Founded in 2020, Clean Crop Technologies is committed to addressing the challenges of food safety and waste in agriculture.

Verdox

Seed Round in 2020
Verdox is dedicated to reversing climate change through the development and deployment of advanced technology. The company’s proprietary electro-swing process, developed at MIT, enables carbon dioxide and other acid gases to be captured with up to 80% less energy and 70% less cost than conventional approaches.

Gradient

Venture Round in 2019
Gradient’s mission is to cool the world by transforming every home to be more comfortable and healthy for the people who inhabit it — without compromising the environment. Today, heating and cooling equipment emits more greenhouse gas emissions than the entire transportation sector, and expansion in the use of cooling is projected to double these emissions in the next 30 years. However, comfortable buildings are critical for health and productivity, especially among communities that are vulnerable to the effects of climate change. Gradient’s vision is a future where everyone has access to comfortable buildings that are fully decarbonized. Our launch product is a direct-to-consumer high-efficiency and low-carbon heat pump.

Twelve

Seed Round in 2019
Twelve is a carbon transformation company converting captured carbon dioxide into valuable chemicals, fuels, and other essential products. Their technology eliminates emissions by turning CO2 into essential products that are made from fossil fuels. They specialize in the fields of CO2 electrocatalysis and electrochemical reactor design.

MicroByre

Seed Round in 2019
MicroByre, Inc. is a biotechnology company based in Berkeley, California, founded in 2017. The company specializes in developing genetically tractable strains from non-model micro-species, focusing on the genetic engineering of bacteria for industrial applications. MicroByre has created a platform for bacterial domestication that utilizes an automated characterization pipeline to identify underutilized bacteria with favorable metabolic traits. These bacteria are capable of converting unrefined biomasses into commodity chemicals more efficiently than traditional fermentation processes. The company’s innovative approach involves minimal genetic modifications to enhance the bacteria's flexibility and yield, reduce the need for nutritional additives, and improve resistance to contamination and phage attacks. By bridging the gap between promising scientific advances and practical applications, MicroByre positions itself as a valuable partner for various industries, offering collaborative opportunities through service agreements or joint development projects.

C-Motive

Venture Round in 2019
C-Motive Technologies Inc., founded in 2012 and based in Madison, Wisconsin, specializes in the development and commercialization of innovative electric motor technology. The company focuses on creating sustainable motors that operate using static electricity, eliminating the need for rare earth materials and significantly reducing copper usage. C-Motive's electrostatic motors are designed to deliver high torque density for stationary industrial applications and e-mobility, aiming to decarbonize these sectors. By utilizing lightweight metals, plastics, and dielectric materials instead of traditional components like steel and copper coils, C-Motive's technology offers double the power at half the weight. With over 90% efficiency in direct drive low-speed applications, these motors represent a significant advancement in clean technology, contributing to lower carbon emissions in various industries.

Charm Industrial

Seed Round in 2019
Charm Industrial has developed an innovative approach to carbon sequestration by converting agricultural residues into bio-oil, which is then injected deep underground for permanent storage. This process not only captures carbon dioxide from the atmosphere but also allows for the production of green hydrogen through the reforming of pyrolysis bio-oil. By utilizing biomass, Charm Industrial aims to provide a reliable and cost-competitive source of energy and industrial chemicals while enabling industrial clients to achieve carbon neutrality. Their technology addresses significant environmental challenges, such as wildfires and soil erosion, by ensuring that captured CO₂ remains securely stored, contributing to a sustainable energy future.

Mallinda

Seed Round in 2018
The name "Mallinda" is a mashup of the words "malleable" and "industries". Mallinda is a developer and material supplier of Pliashell, a new platform technology of intrinsically recyclable and malleable self-healing polymers for the rapidly growing advanced composites industry. Pliashell is a new class of malleable thermoset polymers that enables the manufacture of lightweight, strong, remoldable, and recyclable composite materials. Pliashell advanced fiber reinforced composites have demonstrated ability to be molded at relatively low temperatures. The absence of a curing step drastically reduces manufacturing cycle times. This technology is revolutionizing product development in a variety of market segments

Lilac Solutions

Grant in 2018
Lilac Solutions, Inc. is a mining technology company focused on lithium extraction, providing innovative technology and services to lithium producers. The company specializes in ion exchange beads and continuous brine processing systems, which enable the efficient production of high-purity lithium solutions from various brine resources. This technology, grounded in ion-exchange theory, allows lithium producers to enhance project development, improve lithium recovery rates, and optimize operational efficiency while also minimizing costs and environmental impact. Lilac Solutions serves industries such as electric vehicles and renewable energy storage. Incorporated in 2015, the company is headquartered in Oakland, California.

Rebound Technologies

Seed Round in 2017
Rebound Technologies, Inc. specializes in the manufacturing and supply of advanced thermal energy storage systems tailored for commercial refrigeration and off-grid cooling applications. Founded in 2012 and based in Commerce City, Colorado, the company offers innovative products such as IcePoint, which integrates an embedded thermal energy storage system to significantly reduce cooling costs for supermarkets, and SunChill, designed for agricultural needs in developing regions. SunChill effectively converts solar thermal energy into refrigeration, enhancing agricultural productivity by rapidly cooling harvested crops and maintaining their quality at local markets. Rebound Technologies emphasizes customized solutions that utilize renewable resources and waste heat capture, aiming to improve energy efficiency and reduce costs while supporting self-sustaining business models. The company's initiatives are currently backed by research grants from the U.S. Federal Government.

Wright Electric

Seed Round in 2016
Wright Electric Inc. is a manufacturer of commercial electric airplanes, focusing on reducing costs and emissions in the aviation industry. Established in 2016 and headquartered in Los Angeles, California, the company utilizes innovative propulsion technology to produce aircraft that eliminate emissions without requiring offsets. This advancement not only promotes zero-emissions flight but also aims to make the operational costs comparable to those of traditional fossil-fueled fleets, thereby facilitating the transition to a more sustainable aerospace sector. Wright Electric is positioned to play a significant role in the electrification of aviation, marking a transformative shift in the industry.

Quidnet Energy

Grant in 2015
Quidnet Energy is a technology-driven energy company that powers the carbon-free electric grid. Its technology is a form of hydroelectric energy storage using time-tested well-drilling and construction technologies to pump water under pressure into subsurface geological reservoirs to store energy. When variable renewable energy is not available, this water is released to drive hydroelectric turbines to power the electric grid. The company was founded in 2013 and is based in Houston with offices in San Francisco and Saratoga Springs, New York.
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