142 YC Climate Startups

142 Y Combinator companies carry the Climate tag in YC's own directory, across every batch since 2005. Each row shows what the company does, its batch, HQ and status, and links to its YC application reconstructed in the real form, so a founder building a Climate startup can read how accepted companies answered the same questions.

Companies
142
Top industries
Industrials, B2B and Consumer
Top locations
San Francisco, Los Angeles and New York
YC top companies
3
142 reconstructed applications

Read the YC application of all 142 companies

  • Every company's YC application, reconstructed in the real form
  • Filter every batch by industry, country and team size
  • Then find the investors who fund startups like yours

The first 100 companies, top companies first

1
Cruise
CruiseTopSelf-driving cars.
Winter 2014San Francisco, CAAcquired
2
Moxion Power Co.
Moxion Power Co.TopMobile Energy Storage Technology
Winter 2021Richmond, CAInactive
5
Abatable
AbatableCarbon markets platform and solutions
Summer 2021London, England, United KingdomActive
7
Aerones
AeronesRobotics for wind turbine maintenance.
Winter 2018Riga, LatviaActive
9
Airthium
AirthiumDecarbonized heat and power cheaper than fossil fuels
Summer 2017Paris, Île-de-France, FranceActive
10
Aklimate
AklimateSoftware for enterprises to track and reduce supply chain emissions
Winter 2022London, England, United KingdomInactive

That is 10 of 142.

Every company below has its YC application reconstructed in YC Insights. Create a free account to read them all.

Read all 142 applications
11
Albedo
AlbedoFull-stack VLEO satellite missions
Winter 2021Denver, COActive
12
Alga Biosciences
Alga BiosciencesWe stop cows from burping methane.
Winter 2022Berkeley, CAActive
14
AmpUp
AmpUpWe make EV charging as simple and reliable as LED lights
Winter 2019Cupertino, CAActive
16
Atmo
AtmoUltra-precise AI weather forecasting.
Winter 2020San Francisco, CAActive
17
Birch Biosciences
Birch BiosciencesWe recycle plastic using engineered enzymes
Summer 2022Portland, ORActive
18
Bluedot
BluedotBluedot is a single payment platform for EV drivers and fleets.
Winter 2023San Francisco, CAActive
19
Bright
BrightSunrun for the developing world
Winter 2015Mexico City, CDMX, MexicoActive
20
Brown Foods
Brown FoodsMaking 'REAL' Cow and Human Milk!
Winter 2022Boston, MAActive
22
Canopi
CanopiAPI to measure and eliminate carbon emissions
Summer 2021San Francisco, CAInactive
23
Carbon Crusher
Carbon CrusherWe make carbon negative roads
Winter 2022Oslo, Oslo, NorwayActive
24
CarbonChain
CarbonChainWe help companies automate the accounting of their carbon emissions
Summer 2020London, England, United KingdomActive
25
Carbonfact
CarbonfactDecarbonizing the fashion industry
Summer 2021Paris, Île-de-France, FranceActive
26
Charge Robotics
Charge RoboticsRobots that build solar farms
Summer 2021Oakland, CAActive
27
Choppy!
Choppy!FAST FLAVORFUL PROTEIN
Winter 2023Los Angeles, CAInactive
29
Coperniq
CoperniqWorkflow software for solar & energy contractors ☀️😎
Winter 2023San Francisco, CAActive
30
Coulomb AI
Coulomb AIBattery Observability Platform for Electric Vehicles
Summer 2021Bengaluru, KA, IndiaActive
31
Current Foods
Current FoodsImpossible foods of seafood.
Summer 2020San Francisco, CAAcquired
32
EARTH AI
EARTH AIPredictive Explorer and Driller for Critical Metal Deposits
Summer 2019San Francisco, CAActive
34
Enerjazz
EnerjazzMaking electric vehicle batteries affordable
Summer 2021Delhi, DL, IndiaActive
35
Enode
EnodeAn API for electric vehicles and other energy hardware (DERs)
Winter 2021Oslo, Oslo, NorwayActive
36
Evoly
EvolySmart electric & water meters as a service
Summer 2022Remote, ORActive
38
Fleetzero
FleetzeroMaking all ships robots.
Winter 2022Houston, TXActive
42
Genecis Bio
Genecis BioMakes guilt-free plastics from food waste
Winter 2020Toronto, ON, CanadaActive
43
Georgette Packaging
Georgette PackagingCarbon neutral packaging for ambitious businesses.
Winter 2016Kitchener, ON, CanadaInactive
45
Gridware
GridwareProtecting the grid today, preparing the grid for tomorrow
Winter 2021San Francisco, CAActive
46
Guac
GuacAI-powered forecasting & replenishment for grocery
Summer 2023New York, NYActive
49
Hedgehog
HedgehogBuilding robotic mushroom farms
Summer 2022San Francisco, CAActive
51
Helion Energy
Helion EnergyBuilding the world's first fusion power plant
Summer 2014Seattle, WAActive
53
HomeBreeze
HomeBreezeThe fastest and easiest way to make home upgrades
Winter 2021San Francisco, CAInactive
54
HyLight
HyLightSmall unmanned hydrogen airships for long range monitoring
Summer 2023Paris, Île-de-France, FranceActive
55
Hypermile
HypermileDriver co-pilot to make trucking more efficient
Summer 2020London, England, United KingdomAcquired
58
Inevitable Tech
Inevitable TechTo make food a renewable resource, for everyone
Winter 2016San Carlos, CAInactive
60
Juicy Marbles
Juicy MarblesJuicy marbles makes thick juicy and marbled plant based steaks.
Winter 2021Ljubljana, Ljubljana, SloveniaActive
61
Jupe
JupeJust add land
Summer 2021San Francisco, CAInactive
62
Kapacity.io
Kapacity.ioReducing energy costs & emissions in buildings.
Summer 2021Helsinki, FinlandAcquired
63
Kitekraft
KitekraftBuilding flying wind turbines.
Summer 2019Munich, BY, GermanyActive
64
Ligo Biosciences
Ligo BiosciencesEnzyme design models.
Summer 2024San Francisco, CAActive
65
Line.Build
Line.BuildIncentives and financing for energy efficiency upgrades
Summer 2023San Francisco, CAInactive
66
Living Carbon
Living Carbonmaximizing biomass on low quality land
Winter 2020San Francisco, CAActive
68
Madrone
MadroneMaximizing compute via hyper-efficient cooling
Spring 2026Mountain View, CAActive
69
Micro Meat
Micro MeatTechnologies for scaling up cultured/clean meat production
Summer 2021Monterrey, N.L., MexicoInactive
70
Minimum
MinimumHelping corporates achieve Net Zero through tech solutions.
Summer 2020London, England, United KingdomActive
71
Molagri
MolagriResistance free pesticides.
Summer 2026Toronto, ON, CanadaActive
78
Offbeast
OffbeastWe make plant-based steaks with an authentic texture
Winter 2022New York City, NYActive
80
Olympian Motors
Olympian MotorsNext-generation, modular electric vehicles
Winter 2022New York, NYActive
81
Onsite Pro
Onsite ProRevolutionizing digital selling within HVAC
Summer 2021San Francisco, CAInactive
82
Ontra Mobility
Ontra MobilityPlatform for cities to optimize transit
Summer 2024New York, NYActive
83
Oolu
OoluOolu is one of the fastest growing off-grid solar firms in West Africa
Summer 2015Dakar, Dakar Region, SenegalAcquired
84
Orbillion Bio
Orbillion BioTasty and scalable cultivated meat at price parity
Winter 2021San Francisco, CAAcquired
85
Orbio Earth
Orbio EarthTracking methane emissions with satellites
Summer 2023RemoteActive
86
OutSail Technologies
OutSail TechnologiesRevolutionary, Modern Wing Sails
Winter 2023Mountain View, CAInactive
87
Overflux
OverfluxStreamline EV charger installations for real estate developers
Winter 2023Los Angeles, CAInactive
88
Ovipost
OvipostAutomated insect farming
Winter 2018LaBelle, FLInactive
89
Paces
PacesAgentic AI for Power Projects and AI Infrastructure
Summer 2022New York, NYActive
90
Pachama
PachamaRestoring nature to solve climate change.
Winter 2019San Francisco, CAAcquired
91
Pelm
PelmPlaid for utilities
Winter 2022San Francisco, CAInactive
92
Perfekto
PerfektoGrocery subscription service against food waste in Latam
Summer 2021Mexico City, CDMX, MexicoInactive
94
Phase Biolabs
Phase BiolabsWe make carbon negative chemicals from CO2 using fermentation
Winter 2022Nottingham, England, United KingdomActive
95
Phoenix Hydrogen
Phoenix HydrogenFirst commodity marketplace for hydrogen.
Winter 2022Berkeley, CAInactive
96
Phykos
PhykosGrowing seaweed to stabilize the climate.
Summer 2021San Francisco, CAActive
97
Pina Earth
Pina EarthUnlocking carbon markets for European forest owners
Winter 2022Munich, BY, GermanyAcquired
98
Planet A Foods
Planet A FoodsBuilding the next generation food ingredient champion.
Summer 2021Munich, BY, GermanyActive
99
PowerX
PowerXAI powered sensors that save energy, water and emissions
Winter 2020New York, NYAcquired
100
Precip
PrecipHigh precision AI weather models
Winter 2024RemoteActive

The other 42 companies

Every remaining company in this list, A to Z. Each link opens the company's public page.

Applying to YC? Study these applications first.

YC Insights holds the reconstructed application of every company on this page, filterable by batch, industry and country, next to 60,000+ investors who fund startups like yours.

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About this list

This list is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

Frequently Asked Questions

How many Y Combinator companies are in tagged Climate?

This directory lists 142 YC companies in tagged Climate, out of 6,207 across every batch since 2005. The count updates when the directory is refreshed, and every one of them is on this page with a link to its public profile.

Are the YC applications on these pages real?

No. YC keeps submitted applications private. Every application linked from this list is a reconstruction: the real YC form questions, answered from the company's public data. The Company section is free on each page; the rest opens in YC Insights.

Which companies on this page are best known?

Cruise, Moxion Power Co. and Oklo lead the table above. YC marks 3 of the 142 companies here as top companies, its own list of the highest-valued and highest-revenue alumni.

How do I use this list when applying to YC?

Pick five companies on this page whose product is closest to yours, read their reconstructed applications side by side in YC Insights, and note how each answers the same question. Then write your own answers to that standard.

Where does this data come from?

From YC's public company directory, refreshed by batch, with each company's status, industry and location as YC reports them. Round Funded adds the reconstructed application and the founder profiles; nothing private is published.

What is Round Funded?

Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.