5 Sustainable Climate-Tech Startups Changing the World and Hiring Now

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The growing impact of climate change due to greenhouse gas emissions has been a dominant cause for concern around the world, gaining attention from investors with venture capital firms pouring $53.7B into climate tech in 2021. Climate-focused funding in private markets is projected to continue over the coming decade, with the industry expected to grow to $1.9T by 2030.
The number of climate tech unicorns has grown to 78, with the biggest number of these unicorns sitting in Mobility and Transport. While electric vehicles, micro-mobility (light-weight single person short distance transport), driverless cars, and other innovative transit solutions continue to attract significant funding.
The tech world has seen a dramatic increase in interest in climate tech startups, but the challenge is scale - especially in sectors where the innovator is too big for angel capital but too high-risk for commercial lending. It’s in this space that venture capital plays a critical role. Private markets are willing to forgo an immediate return in anticipation that over the coming decade the economy will inevitably be decarbonized.
Reports predict that the next billion-dollar start-ups will be in climate tech, and will play a huge part in flattening the trajectory of pollution emissions in the hopes of getting the world back on track towards 1.5°C.
Interested in joining the green-tech revolution? Here’s our list of the fastest-growing climate tech companies changing the world, and they’re hiring!
- B2B
- Scale StageRapidly increasing operations
- Website
- http://www.wundercapital.com
- Employees
- 11-50
- Locations
- New York City, San Francisco, Colorado
- About
Wunder Capital has made solar energy painless for hundreds of real estate firms and businesses. Wunder exclusively focuses on serving commercial and industrial property owners, by helping their clients seamlessly deploy solar energy across their portfolio holdings, for both international institutions and smaller firms.
They’ve raised hundreds of millions of dollars in private equity, developed innovative energy infrastructure solutions for the Department of Energy, and built digital products that are used by millions.
- Industries
- Renewable EnergiesRenewable Tech
Jobs
- Website
- http://www.redaptive.com
- Employees
- 201-500
- Locations
- Denver, San Francisco
- About
Redaptive is on a mission to enable enterprises and public entities to achieve energy savings without financial and logistical barriers. With over $500 million in project lending capacity, Redaptive’s leading energy project deploys best-in-class energy efficiency technologies across large commercial real estate portfolios. Having reached 19M in funding, they are backed by Kleiner Perkins Caufield & Byers.
- Industries
Jobs
- B2C
- Early StageStartup in initial stages
- Website
- https://wattbuy.com
- Employees
- 11-50
- Locations
- New York City, Washington DC
- About
WattBuy is working to make cleaner, more affordable electricity accessible in every household. Their energy marketplace helps individuals lower their annual electricity bill by up to 40%, by working with PUC-licensed energy companies to provide households with options specifically tailored to their needs.
WattBuy was built by a team of product leaders and engineers from Google and Amazon using technology to tackle inequality and positively impact our climate.
- Industries
- B2B
- Growth StageExpanding market presence
- Top InvestorsThis company has received a significant amount of investment from top investors
- Website
- http://www.bidgely.com
- Employees
- 51-200
- Locations
- Silicon Valley, Mountain View
- About
Bidgely is an AI-powered cloud based SaaS solution provider that enables electric and gas utilities worldwide to personalize customer experiences, optimize grid and customer operations and accelerate the journey towards a clean energy future.
With roots in Silicon Valley, Bidgely has over 17 energy patents, $77M+ in funding, retains 30+ data scientists, and brings a passion for AI to utilities serving 27M+ customers around the world. They have a number of investors, including Khosla Ventures, who have also invested in Stripe.
- Industries
- B2B
- Scale StageRapidly increasing operations
- Valuation $1B+This company has a valuation of $1B or more
- Website
- https://www.formenergy.com
- Employees
- 501-1000
- Locations
- Somerville
- About
Form Energy is developing a new class of cost-effective, multi-day energy storage systems that will enable a reliable and fully-renewable electric grid year-round. Their battery technology reforms the global electricity system to run on 100% low-cost renewable energy. Form Energy is motivated and inspired to create a better world.
- Industries
- Renewable Energies

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