Breakthrough Look Book

Climate Tech has Arrived

Check out our portfolio companies, Fellows, and Catalyst projects, and meet the innovators who are carving the path to a clean energy future.

Mill

Food waste makes up 10% of global carbon emissions and, if food waste was a country, it would be the third-largest greenhouse gas emitter, behind China and the U.S. Mill was founded in 2020 by Matt Rogers and Harry Tannenbaum, who worked together at Nest building the Nest Learning Thermostat and other smart home products, because home food waste is the biggest, dumbest climate problem. Mill is the easiest, smartest solution.

Mill is the odorless, effortless, fully automated food recycler. Add peels, bones, stalks, pits, and forgotten leftovers. Mill turns them into clean, dry grounds while you sleep. Keep filling it for weeks.Skip a garbage day or two. Enjoy a kitchen that smells like nothing at all. You can add the grounds to your own compost pile, or add pickups and we’ll get them back to one of our small farm partners, helping to produce more food.

Our Companies

Company	Description	Sector	Program	Technology
44.01 CO2 to X	Offering permanent CO₂ storage solutions using the natural power of mineralization	Manufacturing	Ventures	CO2 to X	View details
75F Sensors	75F uses smart sensors and controls to make commercial buildings more healthy, efficient, and comfortable than ever before	Buildings	Ventures	Sensors	View details
Aeroseal Leak-Sealing & Insulation	Shrinking carbon emissions in the built environment with air-sealing technologies for HVAC ductwork and building envelopes	Buildings	Ventures	Leak-Sealing & Insulation	View details
Aikido Technologies Renewables	Aikido Technologies has designed a self-erecting platform for floating, offshore wind turbines to overcome key barriers to increasing offshore wind energy production	Electricity	Fellows	Renewables	View details
Airloom Wind Turbines	Transforming wind energy through low-cost, infinitely flexible systems	Electricity	Ventures	Wind Turbines	View details
Albedo Aerial Monitoring	Aerial quality imagery — from space	Agriculture	Ventures	Aerial Monitoring	View details
Alpine Bio Food & Beverage Alternatives	Alpine Bio is on a mission to transform plants into the world's most regenerative ingredient factories, bringing their first protein Casein to market via tastings in 2025	Agriculture	Ventures	Food & Beverage Alternatives	View details
Aluminio Renewables	Aluminio is developing a new approach to using aluminum to replace the silver used on solar cells, reducing the costs and accelerating adoption of more efficient cell designs	Electricity	Fellows	Renewables	View details
Antora Energy Thermal Energy Storage	Electrifying heavy industry with zero-carbon heat and power	Electricity	Ventures	Thermal Energy Storage	View details
Arculus Solutions Hydrogen	Arculus Solutions is future-proofing current natural gas transmission pipelines to safely transport hydrogen	Manufacturing	Fellows	Hydrogen	View details
Arinna Renewables	Arinna is empowering humans and machines with abundant solar energy via its paper-thin power-dense solar panel technology.	Electricity	Fellows	Renewables	View details
ArkeaBio Methane	ArkeaBio™ is an ag-biotech start-up developing a vaccine solution to significantly decrease methane emissions from ruminant animals globally	Agriculture	Ventures	Methane	View details
Arnergy Storage	Replacing fossil fuel generators with modularized solar +lithium ion storage systems in emerging markets	Electricity	Ventures	Storage	View details
Aspiring Materials Carbon Removal	Aspiring Materials is tackling industrial CO₂ emissions from two angles - what goes in and what comes out. And we’re using commonly found rocks to do it	Manufacturing	Fellows	Carbon Removal	View details
Barocal Heating and Cooling	Barocal is revolutionizing cooling and heating with a breakthrough solid-state technology that offers very high energy efficiency without harmful refrigerant gases.	Buildings	Fellows	Heating and Cooling	View details
Baseload Capital Heat Power	Investing in a sustainable future by developing heat power plants worldwide	Electricity	Ventures	Heat Power	View details
BIOMILQ Food & Beverage Alternatives	Giving infants the opportunity to thrive through superior cultured-breastmilk nutrition	Agriculture	Ventures	Food & Beverage Alternatives	View details
Bloom Biorenewables Biochemicals	Bloom Biorenewables designs a world in which our materials and fuels are made from sustainable bio-based carbon	Transportation	Ventures	Biochemicals	View details
Blue Frontier HVAC	Smart, ultra-efficient sustainable air conditioning with integral energy storage	Buildings	Ventures	HVAC	View details
Blue World Technologies Methanol	Making high-temperature fuel cells that enable efficient use of electro-fuels for industries around the world	Transportation	Ventures	Methanol	View details
Boston Metal Steel	Game-changing technology for steel decarbonization and sustainable metals production	Manufacturing	Ventures	Steel	View details
Brimstone Energy Cement	Decarbonizing ordinary portland cement	Manufacturing	Ventures	Cement	View details
C-Zero Renewable Natural Gas	Decarbonizing natural gas	Manufacturing	Ventures	Renewable Natural Gas	View details
C16 Biosciences Food & Beverage Alternatives	Producing sustainable alternatives to palm oil using biotechnology	Agriculture	Ventures	Food & Beverage Alternatives	View details