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Clean Energy Ventures
Boston, United States
We invest in early‑stage climate‑tech companies commercializing disruptive, capital‑light energy technologies and innovative business models that can significantly cut greenhouse‑gas emissions. Our focus is on advanced e...
Portfolio
36+
Employees
50+
Founded
2017
AUM
≈ $415.0M
Investment focus
Stages
Seed → Series C+
Industries
Clean Technology
Geographic scope
North America
Fund details
Funds
Fund I
Vintage 2019 • $110.0M
Fund II
Vintage 2024 • $305.0M
Sources
Clean Energy Ventures
We invest in early‑stage climate‑tech companies commercializing disruptive, capital‑light energy technologies and innovative business models that can significantly cut greenhouse‑gas emissions. Our focus is on advanced energy solutions with the potential to mitigate gigatons of CO₂ by 2050, providing hands‑on mentorship and strategic resources to help founders scale.
Portfolio
36+
Employees
50+
Founded
2017
AUM
≈ $415.0M
Funds
Fund I · Vintage 2019 • $110.0M
Fund II · Vintage 2024 • $305.0M
Stages
Seed → Series C+
Industries
Clean Technology
Geographic scope
North America
Sources
Showing 24 of 35 matched portfolio companies
7AC Technologies develops climate control technology that independently manages humidity and temperature within a single device. This system achieves up to 50% energy savings compared to standard HVAC methods by delivering air directly at exact conditions. The technology also allows for a reduced refrigerant charge while improving indoor comfort.
Advanced Ionics develops electrolyzers that operate in an intermediate temperature range, utilizing existing steam in industrial settings to produce green hydrogen with up to 50% less electricity per kilogram. This technology eliminates the green premium associated with hydrogen production, making it more cost-effective for industries reliant on hydrogen for exothermic reactions.
Funding: $21.1M
Rough estimate of the amount of funding raised
Funding: $21.1M
Rough estimate of the amount of funding raised
Aepnus uses electrochemical salt‑splitting technology to convert sodium sulfate waste streams into caustic soda and sulfuric acid on‑site. The process lowers energy consumption, eliminates waste disposal steps, and reduces dependence on external chemical suppliers. By integrating the electrolyzers into existing plants, customers can cut operating costs, mitigate regulatory risk, and secure their chemical supply chain.
Funding: $10.6M
Rough estimate of the amount of funding raised
Clean Energy Ventures
Clean Energy Ventures
Funding: $10.6M
Rough estimate of the amount of funding raised
Aqua Membranes manufactures reverse osmosis membrane elements that incorporate a proprietary printed spacer directly on the membrane surface, removing the conventional mesh feed channel. This design cuts hydraulic resistance by up to 30%, reducing pump energy consumption and fouling, and can be retrofitted as a drop‑in replacement in existing brackish‑water RO systems for utilities, wastewater reuse, food‑and‑beverage, and mining operations.
Provides a Liquid Organic Hydrogen Carrier (LOHC) technology that enables safe, efficient, and scalable storage and transportation of hydrogen over long distances. This solution addresses the challenges of hydrogen logistics, supporting the transition to sustainable energy by facilitating widespread hydrogen adoption for generation and storage.
Funding: $9.6M
Rough estimate of the amount of funding raised
BDC Capital’s Climate Tech FundClean Energy Ventures
BDC Capital’s Climate Tech FundClean Energy Ventures
Funding: $9.6M
Rough estimate of the amount of funding raised
Bodhi provides a unified customer experience platform for residential solar installers, consolidating text, email, and in‑app communications into a single inbox and automating project updates through customizable, milestone‑triggered journeys. AI‑driven sentiment analysis and a 24/7 AI assistant help identify and resolve at‑risk customers before cancellations, while integrated surveys, review requests, and referral tools turn satisfied homeowners into new business sources.
Funding: $4.2M
Rough estimate of the amount of funding raised
Google for Startups
Google for Startups
Funding: $4.2M
Rough estimate of the amount of funding raised
Boston Materials provides a drop‑in thermal interface material, Liquid Metal ZRT®, that combines a carbon‑fiber scaffold with a liquid‑metal filler to deliver anisotropic heat conduction for high‑power GPUs and ASICs. The TIM reduces device junction temperatures by 5–8 °C on 1 kW+ workloads, enabling higher power limits and lower cooling energy, and is compatible with existing server and liquid‑cooling designs.
Funding: $13.5M
Rough estimate of the amount of funding raised
Accelr8Diamond Edge Ventures
Accelr8Diamond Edge Ventures
Funding: $13.5M
Rough estimate of the amount of funding raised
Carbon Upcycling utilizes a patented technology platform to transform local industrial byproducts and natural materials into carbon-sequestering cement replacements, effectively reducing the carbon footprint of concrete production. This process addresses the significant CO2 emissions generated by the cement industry, which accounts for eight percent of global emissions, while enhancing concrete performance and durability.
Greentown Labs
CleanFiber manufactures spray‑in cellulose insulation from recycled corrugated cardboard using a patented wet‑separation process that removes dust and contaminants. The fibers are infused with an all‑borate liquid fire retardant, delivering uniform fire resistance, low‑dust application, and high coverage while meeting ASTM‑C739 standards. The product offers contractors a clean, high‑performance, and price‑stable alternative to traditional newsprint‑based insulation.
Funding: $34.0M
Rough estimate of the amount of funding raised
Funding: $34.0M
Rough estimate of the amount of funding raised
ClearTrace provides a decarbonization software platform that digitally tracks energy assets, greenhouse gas emissions, and certificate portfolios using a modern data infrastructure and 24/7 hourly load matching technology. This solution enables investors, enterprises, and real estate owners to manage their energy and carbon assets efficiently, ensuring accurate and auditable data for sustainability reporting.
Funding: $24.9M
Rough estimate of the amount of funding raised
Google for Startups
Google for Startups
Funding: $24.9M
Rough estimate of the amount of funding raised
ConnectDER provides Meter Socket Adapters (MSAs) that attach directly behind the utility meter to create a plug‑and‑play interface for residential solar panels, battery storage, and EV chargers. The adapters integrate microgrid interconnect devices, current transformers, and voltage sensors, eliminating interior panel work and enabling code‑compliant installations in 15‑30 minutes while reducing labor and material costs.
Funding: $35.0M
Rough estimate of the amount of funding raised
+ 6 Other investorsDecarbonization Partners
+ 6 Other investorsDecarbonization Partners
Funding: $35.0M
Rough estimate of the amount of funding raised
The startup manufactures single-unit multi-port battery energy storage systems and L3 DC fast charging technology specifically designed for electric vehicles and microgrids. This technology enables efficient and cost-effective charging solutions, addressing the need for reliable energy infrastructure in the growing electric vehicle market.
Joules Accelerator
Electrified Thermal Solutions develops the Joule Hive™ Thermal Battery, which uses electrically conductive firebricks to convert and store electricity as high-temperature heat up to 1,800°C. This thermal battery technology enables zero-carbon industrial heating that is cost-competitive with natural gas. The system integrates easily with existing industrial processes to decarbonize hard-to-abate sectors like cement and steel.
Funding: $23.9M
Rough estimate of the amount of funding raised
Funding: $23.9M
Rough estimate of the amount of funding raised
Evari develops miniature, oil-free turbocompressors for heat pumps, designed to operate efficiently without polluting refrigerants. Their technology addresses the high energy consumption and emissions associated with traditional heating and cooling systems, contributing to a significant reduction in global CO2 emissions.
Funding: $7.6M
Rough estimate of the amount of funding raised
US Department of Energy
US Department of Energy
Funding: $7.6M
Rough estimate of the amount of funding raised
Exterra Carbon Solutions develops engineered mineral carbonation technology to convert mineral waste into durable CO2 storage, effectively creating large-scale carbon sinks. This process addresses the urgent need for permanent carbon sequestration to mitigate climate change by providing a reliable solution for industrial emitters and direct-air-capture companies.
Funding: $2.4M
Rough estimate of the amount of funding raised
Funding: $2.4M
Rough estimate of the amount of funding raised
This company offers a pyrometallurgical technology that integrates into steel manufacturing to reduce carbon emissions. Their solution helps steel manufacturers meet environmental regulations and optimize energy efficiency while maintaining cost-effective operations.
LineVision provides utilities with non-contact sensors and dynamic line rating (DLR) technology to enhance the capacity and safety of electrical transmission lines. By delivering real-time data and situational awareness, their solutions enable utilities to increase line capacity by up to 40% while reducing the risk of outages and improving asset management.
Funding: $49.9M
Rough estimate of the amount of funding raised
Climate Innovation CapitalS2G Ventures
Climate Innovation CapitalS2G Ventures
Funding: $49.9M
Rough estimate of the amount of funding raised
Lithios is commercializing an electrochemical platform that extracts lithium from untapped mineral resources using sustainable methods. This technology addresses the growing demand for low-cost lithium essential for energy storage and electric vehicle applications.
Funding: $13.1M
Rough estimate of the amount of funding raised
Clean Energy Ventures
Clean Energy Ventures
Funding: $13.1M
Rough estimate of the amount of funding raised
MacroCycle uses a patented chemical process to upcycle end‑of‑life plastics and polyester waste into virgin‑grade PET and polyester resins. The technology synthesizes macrocycles, achieving up to 80 % lower energy use than traditional recycling and enabling zero‑carbon production when powered by renewables, while delivering drop‑in material that meets PCR regulations without a green premium.
Funding: $350.0K
Rough estimate of the amount of funding raised
Massachusetts Clean Energy Center
Massachusetts Clean Energy Center
Funding: $350.0K
Rough estimate of the amount of funding raised
NitroFix develops decentralized green ammonia generators that produce zero-emission ammonia using only air, water, and renewable energy. This technology bypasses the high temperature and pressure requirements of traditional Haber-Bosch synthesis, eliminating fossil fuel reliance and complex logistics. The resulting on-site production capability provides stable, cost-effective ammonia supply for fertilizers, maritime fuels, and chemical feedstocks.
Funding: $3.6M
Rough estimate of the amount of funding raised
Funding: $3.6M
Rough estimate of the amount of funding raised
Noon Energy develops a flow battery technology that provides economical long-duration energy storage, ensuring that renewable energy sources like solar and wind are available continuously. This technology addresses the challenge of energy intermittency, enabling reliable access to clean energy year-round.
Funding: $30.9M
Rough estimate of the amount of funding raised
Elemental Impact
Elemental Impact
Funding: $30.9M
Rough estimate of the amount of funding raised
Nth Cycle utilizes patented electro-extraction technology to refine critical metals from end-of-life batteries and mined ore directly at partner facilities, eliminating the need for centralized processing. This approach addresses the lack of domestic refining capabilities for essential materials required in the clean energy transition, reducing reliance on overseas supply chains.
Funding: $60.1M
Rough estimate of the amount of funding raised
Funding: $60.1M
Rough estimate of the amount of funding raised
OXCCU develops a patented one-step catalytic process that converts carbon dioxide and hydrogen from renewable sources into low carbon intensity fuels, chemicals, and biodegradable plastics. This technology addresses the need for sustainable hydrocarbons in aviation and consumer products, significantly reducing capital and operational costs compared to traditional methods.
Funding: $25.6M
Rough estimate of the amount of funding raised
Ricardo
Ricardo
Funding: $25.6M
Rough estimate of the amount of funding raised
Pearl Certification provides third-party certification for high-performance homes, enabling homeowners to enhance their property’s energy efficiency and market value. By partnering with a network of qualified contractors and real estate professionals, Pearl ensures that these homes are accurately valued and effectively marketed, benefiting both current and future homeowners.
Funding: $51.8M
Rough estimate of the amount of funding raised
Funding: $51.8M
Rough estimate of the amount of funding raised
Showing 1 of 1 unmatched portfolio company