We write the first check for CleanTech startups with bold and visionary founders.

"Climate tech will produce 8 to 10 Teslas, a Google, an Amazon and a Microsoft."
- Bill Gates
Our story
After founding the successful energy tech startup gridX, which was later acquired by E.ON, Andy and David recognized the immense potential of the CleanTech industry. Drawing on their extensive expertise and experience, they established FundX to support visionary entrepreneurs in their quest to develop innovative solutions for a sustainable future.
Our approach
Our team at FundX is deeply committed to the success of our portfolio companies. We leverage our engineering backgrounds and hands-on experience to provide tailored support, strategic guidance, and unparalleled technical insight. By partnering with FundX, clean tech startups gain access to not only capital but also a network of industry connections and resources.
Our investment focus
FundX invests in early-stage clean tech startups that are developing breakthrough technologies and solutions across various sectors, including renewable energy, energy efficiency, smart grid, energy storage, transportation, and sustainable agriculture. We believe that these innovative startups hold the key to a cleaner, more sustainable future.
Our impact
Expertise: Our founders, Andy Booke and David Balensiefen, are seasoned entrepreneurs and engineers with a proven track record in the clean tech space.
Support: We offer hands-on guidance, technical insights, and strategic advice to help startups navigate the challenges of scaling and growth.
Network: Our extensive industry connections provide startups with access to valuable resources and potential partners.
Commitment: We share a common goal with our portfolio companies — to create a positive, lasting impact on the environment and our society.

About us

We are entrepreneurs ourselves and we can help you find your market, build your product, recruit your team, find follow-on investment, and exit successfully.

Andy Booke
General Partner
David Balensiefen
General Partner

Our portfolio

Energy Management Platform
Voltfang
Second Life Battery Storage
Homenergy
Clean and affordable energy for private customers
RIZM
Energy Concepts for Businesses
Heimladen
Charging Solutions for property owner
AccessOwl
User Provisioning and Access Management on Autopilot
enneo
AI customer service tool for utilities
Greenflash
Smart energy systems for C&I
Autarc
The leading OS for heat pump installers
acto
B2B Sales Decision Intelligence Platform

We invest in the following areas

  • Energy management in software and hardware
  • Energy storage (next-generation batteries)
  • Energy generation (low or no-carbon)
  • Transportation (EVs, electric airplanes, you name it)
  • Net zero fuels
  • Lowering the carbon footprint of agriculture
  • Recycling and reuse

Contact Us

Interested in getting in touch with us? Fill out this form and we will get in touch (and yes, we’ll actually get in touch).

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