Climate Circle Ventures
Use the filters below to browse current and former Climate Circle ventures.
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All
107
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Harvard Business School
34
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Harvard College
11
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Harvard Extension School
8
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Harvard Graduate School of Design
5
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Harvard Graduate School of Education
5
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Harvard John A. Paulson School of Engineering and Applied Sciences
3
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Harvard Kennedy School
18
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Harvard Kenneth C. Griffin Graduate School of Arts and Sciences
3
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Harvard Law School
2
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Harvard Medical School
1
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Harvard T.H. Chan School of Public Health
6
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Non-Harvard Affiliate
13
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All
107
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Aerospace and Defense
1
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Agriculture
5
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Aid and Relief
1
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Architecture, Construction, and Engineering
2
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Arts and Culture
1
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Climate and Sustainability
19
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Education and Learning
2
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Electronics and Hardware
3
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Energy, Oil, and Renewables
13
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Fashion, Beauty, and Retail
1
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Finance and Insurance
2
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Medical Devices and Hardware
1
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Real Estate and Housing
1
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Software/App
2
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Transportation and Logistics
3
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1Climate
For clean energy developers who struggle with the time and costs of managing the regulatory sides of their projects, 1Climate offers an AI-powered, end-to-end platform that automates clean energy permitting and incentive processes.
![1Climate team]()
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A1 Power Technologies
Powering Nigeria’s food systems with clean energy across farming, processing, and distribution — improving food security while reducing the environmental footprint of agriculture.
![A1 Power]()
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Aclaria Partners
Financing decarbonization of real estate at scale with a team that has best-in-class subject matter expertise; demonstrated leadership across multiple economic cycles; and proven track records in global finance, business, and policy.
![Gautam Barua]()
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Active Surfaces, Inc.
Developing a patented, lightweight, flexible solar technology that accelerates adoption in the built environment and rapidly mitigates carbon dioxide emissions at a global scale.
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ADAPT
An automated sustainability reporting platform for fleet operators with the aim to reduce greenhouse gas emissions in the transportation industry.
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Adiabatic Materials
Building a novel chemical manufacturing platform to decarbonize the chemical industry by replacing heat obtained from fossil fuels with electricity.
![Adiabatic Materials]()
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AgDev
Offering long-term debt capital for expansion-focused farmers in Brazil to purchase and restore degraded pastures to productivity, which reduces the need and financial incentive to clear native vegetation.
![AgDev team filtered]()
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Algoma
Designing and building net-zero multifamily homes by combining mass timber with an offsite manufacturing approach.
![Algoma team]()
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Applied Impact
Building software for communities, regulators, and developers to forecast air pollution and water impact of energy-intensive sites connected via the grid or on-site power sources.
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Atterriss LLC
Building the infrastructure for a global, high-integrity carbon market — partnering with stock exchanges and regulators to enhance trust and unlock capital flows.
![Atterriss LLC]()
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Authentica AI
Using AI and blockchain to trace rare earth element sourcing, ensuring compliance for manufacturers, labs, and governments needing to verify the climate impact and origin of rare earth materials.
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Axle Technologies
Bringing together data from automakers, telematics providers, and other sources to optimize fuel usage, track vehicles, and reduce insurance premiums.
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Birufinery
Creating seaweed-based biostimulants for sustainable agriculture that remediate soil, boost yields, and improve fertilizer efficiency.
![Birufinery]()
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blip energy
An affordable, portable smart battery that offers backup power and bill savings, reduces emissions, and stabilizes the grid. Now regular consumers can charge when energy is cheap and discharge when energy is expensive.
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Bright Feeds
Helping companies meet their sustainability goals and increase profit margins by turning their food waste into high-quality nutritious animal feed.
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Bring4you
Enabling companies and individuals to seamlessly send bulky items anywhere at low cost while reducing carbon emissions.
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Carbon Counts
For people who see climate change as a problem but don’t feel like they can help, Carbon Counts has built a mobile game, EverForest, and an impact platform to plant billions of trees and motivate meaningful climate action.
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Carbon Re
Using artificial intelligence to decarbonize energy-intensive industries, such as cement and steel.
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CarbonTag
Offering a SaaS solution for food and beverage companies to manage their products' carbon footprints.
![CarbonTag]()
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Cardinal LCA
Cardinal LCA provides an easy-to-use tool that helps architects reduce emissions at each stage of building design and construction in order to comply with net-zero city standards.
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Charli Charging, Inc.
Providing premium, turnkey EV charging solutions for the largest commercial and multifamily properties as well as single-family residences.
![Charli Charging Inc.]()
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CliMent
For mothers in underserved, climate-vulnerable communities facing silent mental health risks, we provide EMRI—an offline, AI-powered tool that detects distress early without stigma or internet.
![CliMent]()
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Coastal Protection Solutions, Inc
Specializing in easily deployable systems to help at-risk coastal communities protect themselves from the effects of climate change, storm surge, and sea-level rise.
![Alex Berkowitz]()
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Coolant
Carbon MRV for forests.
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Crop Diagnostix
Building the future of predictive agriculture with patented, AI-powered gene expression technology.
![Brandon Chi]()
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DetoXyFi
Developing science-backed, all-natural water filters inspired by nature — removing disease-causing agents from drinking water to provide World Health Organization-quality water.
![Detoxyfi team]()
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Earth Warriors Global
Providing a comprehensive climate education school curriculum for 3-11-year-olds using a positive and empowering approach.
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Earthacre
Deploying cutting-edge technologies that enable Indigenous landowners to quantify, measure, and get paid for protecting nature and fostering healthy ecosystems.
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EarthBond
Affordable energy for African small businesses. Reliable solar energy that saves business owners money on fuel for their generators.
![EarthBond founder]()
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Eki Agrivoltaics
Enabling the coexistence of agriculture and solar energy by scaling an innovative photovoltaic technology and sharing the revenue generated from the solar energy with farmers.
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Elio
A climate research data platform to optimize our climate response and drive innovation.
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EmpoderaClima
A youth-led organization from Brazil empowering women and girls to lead climate action across Latin America through education, leadership training, and global advocacy.
![Empodera venture headshot]()
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Energenesis, Inc.
Providing an AI-powered agrivoltaic system that co-produces clean energy and crops, enhancing revenue and sustainability.
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EQORE
Providing intelligent battery systems that help commercial and industrial facilities cut electricity costs without changing operations.
![EQORE]()
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ETCHED
Creating next-generation art paper that does not buckle or bleed. ETCHED’s stone paper uses 85% less energy, 60% less C02, zero water, zero trees, and is infinitely recyclable.
![Etched cofounders smiling in front of a window at Cogo labs]()
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Finpublica
Empowering finance leaders to foster a more sustainable, inclusive, and equitable society.
![Adam Wasserman]()
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Firn
Investments in clean assets have traditionally been too big or off-limits for mainstreet investors. Firn’s technology fractionalizes investments into clean energy in an easily manageable way.
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FlatPeak
Building an energy data platform that provides a complete energy optimization solution for any product or service.
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Focal
Using smart sensing and directional heat to warm people, rather than entire spaces.
![Raj holding a focal heater]()
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GarboCarbo
Capturing CO2 for manufacturers.
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GoPowerEV
Building an affordable, hassle-free EV charging solution for multifamily communities.
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GramHeet
For Indian smallholder farmers facing post-harvest challenges, GramHeet provides integrated solutions that increase earnings, foster self-reliance, and mitigate environmental effects.
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Grassroots Energy Inc
Providing reliable and rugged proprietary biogas digesters to process agro and animal waste.
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Grensol AG
Recovering emissions-free hydrogen and carbon black from unrecyclable mixed plastic waste generated from industrial recycling.
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Gridbrid
Helping companies simplify the process, maximize the profits, and reduce the risks of developing renewable energy power plants.
![GridBid team leads]()
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Gridify
Building software for clean energy markets with the mission to increase transparency for environmental commodity transactions.
![Gridify]()
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H2BIOSYS
Transforming planet-heating methane into clean and sustainable materials, animal feed, and hydrogen.
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HBTBL
A platform that streamlines pre-development and aligns key players early around real estate projects that benefit people and cities, making high-impact projects happen in the right places.
![Habitabl]()
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Henua Technologies
Combining environmental management technology, innovation, and business intelligence, Henua Technologies’ tools help corporations implement sustainability, ESG, regulatory compliance, process transformations to meet their goals.
![Octavio Zapata]()
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HyCO Tech Solutions
Delivering clean hydrogen and high-quality carbon products with reduced water use and a smaller CO₂ footprint.
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HydroHaul
Developing an energy-efficient mechanism for liberating hydrogen from liquid organic hydrogen carriers, enabling a safe and easy-to-use technology for moving and storing hydrogen.
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INVERSA
Regenerating native biodiversity by creating a market for leathers from invasive animals.
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Invert Inc.
For companies focused on closing the gap between emissions reduction ambition and program execution, Invert accelerates corporate sustainability programs through nature-based carbon credit projects.
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Jexim
Delivering sustainable, high-performance asphalt technologies to markets worldwide.
![Jexim]()
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Julius
Solving the talent needs of the cleantech transition by providing innovative programs to help energy employers attract new talent and upskill current talent for the future of work.
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Keystone Climate
For corporate sustainability teams that need to measure, mitigate, and report their impact on nature and biodiversity, Keystone Climate provides software to automate this process.
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Kykloris
Developing a unique and environmentally friendly method to extract valuable chemicals from seafood waste.
![Kykloris]()
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Laboratorio de Ideas Sostenibles (The Sustainable Ideas Lab)
Delivering climate solutions across South America through planning and design.
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LymeAlert
Building the world's first home/field testing kit for Lyme and other tick-borne diseases, paired with an app that maps the locations of various tick species and the diseases they carry.
![Lyme Alert]()
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Metafin
For Indian retail customers who want to install cleantech solutions but lack the upfront capital, Metafin provides rapid financing decisions and works with partners to systematically minimize installation and operational risk.
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Metric
Data analytics software to help private market investors measure their portfolio’s environmental, social, and governance (ESG) performance.
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Mireta Urban Dynamics
Building biology-inspired AI tools to help developers plan more climate-resilient city networks.
![Mireta's founder presents in front of screens]()
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Mitti Labs
Enabling sustainable rice farming by developing the most transparent and high-quality projects.
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MyGug
Enabling individuals and businesses to generate renewable energy and reduce waste through a micro-scale anaerobic digestor. Our digestors help lower GHG emissions and reduce regular consumers’ fossil fuel reliance from the comfort of their kitchens.
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Neta
Streamlining packaging environmental compliance and unlocks cost savings by seamlessly integrating reporting, regulatory tracking, and packaging optimization for consumer companies and packaging manufacturers.
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Nixe
Developing a water repellent coating for soft materials that is robust, flexible, breathable, and PFA-free.
![Nixe]()
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Noetis
Creating a next-gen data layer for waste operations using smart, AI-powered sensors and analytics to transform methane emissions into energy revenue, while driving organic waste diversion and streamlining environmental compliance.
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OCOchem
For companies which are trying to reduce the carbon intensity of their process or products, OCOchem converts their captured CO2 into a green molecule (formic acid) to store and transport green hydrogen.
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Offstream
For companies that remove carbon and want to automate carbon compliance, Offstream’s platform maximizes revenue and minimizes time spent managing carbon certifications, compliance needs, and reporting.
![Offstream cofounders]()
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OmniPath H2
Developing an industrial decarbonization platform. The company's novel reactor can extract hydrogen from any gas streams, reducing costs for production, transportation, and recycling of hydrogen across many industrial sectors.
![OmniPath H2]()
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Onvector
Providing plasma water treatment technology to reduce cost and enable beneficial reuse of high-strength wastewater streams.
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Orien Energy
Developing an adsorption heat pump to recover the heat embedded in humidity, maximizing heat pump efficiency.
![Orien Energy]()
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Pacto Medical
A collapsible syringe that reduces transportation volume by 40%, allowing public health and healthcare workers to ship and deliver more syringes for less money and with a lower environmental impact.
![Pacto co-founders smiling and holding syringes]()
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PelaStar
Building a new platform for floating offshore wind energy. With a decade of pioneering R&D and engineering, PelaStar’s tension leg platform minimizes environmental impact and operations and maintenance (O&M) costs, and maximizes flexibility during deploym
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Plastimber
Developing a board made from recycled materials that is inherently waterproof and can be used 50x more than traditional plywood for poured concrete.
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Polyose Bio
Keeping food waste out of landfills by upcycling it into high-value sugar polymers using a combination of insects and microbial cell factories.
![Polyose Bio founder]()
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PowerNaP Energy
Developing advanced materials to make sodium-ion batteries as efficient as commonly-used lithium-ion batteries, but at half the cost.
![PowerNaP Energy]()
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Prisere LLC
Developing technology to help the reinsurance sector address underwriting the risks of a changing climate.
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Private Fleet Net Zero
Matching more than $50 billion worth of demand for shipping products to unused cargo space in private truck fleets, which has the potential to save two million tons of carbon dioxide.
![Private Fleet Net Zero]()
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Quino Energy
Making affordable, non-flammable and low-maintenance flow batteries for storing renewable energy in the electrical grid.
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Rarefied
Developing a propulsion mechanism that can fly in near-space, a region that is inaccessible to aircraft and satellites, to deliver climate insights and offset satellite emissions.
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RegenerateLand
Providing a software for low-cost and transparent monitoring, reporting, and verifying of carbon stocks in forest and agroforestry systems, degradation, regeneration, deforestation, and fire monitoring in the tropics.
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Resilience Investments
Revitalizing housing in America’s heartland by turning overlooked properties into profitable, energy-efficient assets that strengthen communities and deliver solid returns.
![Resilience Investments]()
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RESILIFT
For homeowners with flood risk, RESILIFT provides end-to-end residential flood-proofing solutions focusing on project financing and physical mitigation using innovative technology to optimize the process.
![Resilift team]()
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ReThink Packaging Alliance
A consumer product packaging solutions alliance working with CPG brands, retailers, social Influencers, and everyday consumers to reduce packaging waste and make packaging more environmentally friendly.
![ReThink Packaging Alliance]()
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Rice Husk Insulation System
Creating a low-cost, readily-available, bio-based insulation for buildings using rice husk — an agricultural waste.
![Rice Husk Insulation System]()
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Sagewell, Inc.
Delivering insights from utility smart meters and customer data analytics, we target incentives that accelerate the adoption of electric vehicles and heat pumps. Our work reduces emissions and ensures a reliable, stable grid for all customers.
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Shamsina
Designing, manufacturing, and delivering affordable, locally-made solar water heaters for all Egyptians, from energy poor communities to energy-conscious consumers.
![Shamsina]()
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SkillSeek
Creating accessible and effective training bootcamps to equip individuals with the right skills to enter and build a career in the clean energy industry.
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Skiply
Applying AI-powered solutions to authenticate, score, and automatically route retail returns into circular resale, donation, or refurbishment — turning what was once landfill-bound into climate-positive assets.
![Skiply]()
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SubjectToClimate
A nonprofit online connector for K-12 educators of all subjects to find credible and engaging materials on climate change at no cost.
![Margaret Wang]()
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Sunspan
Commercializing solar panels that incorporate aerodynamic photovoltaic tubes, simplifying support structures and lowering installation costs.
![Sunspan]()
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Super
Empowering businesses to eliminate single-use plastics through a tiered certification program.
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Suyana
Using AI and digital technologies to make climate insurance more accurate, accessible, and affordable for vulnerable populations in developing countries.
![Suyana]()
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SXD
Turning fabrics — including leftover and wasted ones — into beautifully-designed apparel products with ~55% lower costs and zero waste.
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Tender Food
Introducing a new generation of alternative meat products that have the same texture, taste, and consistency as real meat, using patented fiber-spinning technology.
![Asian style buns made with alternative meat product]()
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TerraFirma Software
A software company modeling climate risks using geospatial datasets, TerraFirma Software empowers users to visualize flooding, coastal erosion, landslides, and wind-related risks.
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TerraStor
For grids trying to transition to renewables but blocked by intermittent energy supply, TerraStor is developing long-duration, grid-scale energy storage systems in the form of compressed nitrogen in underground porous rock reservoirs.
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The Surpluss
Helping governments and small-to-medium enterprises bridge the gap between climate science and circular economy with a digital solution to share their underutilized resources and profit from them.
![Rana Hajirasouli]()
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Thermoterra
Developing an energy-saving technology for cooling and heating. Verified in thermal simulation and lab scale experiments, ThermoTerra’s technology uses ambient humidity fluctuation to fuel a substantial part of the heating and cooling of buildings.
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