About The Green Techpreneur
We tell the stories of the people sparking the transition.
The Green Techpreneur is a magazine and marketplace designed to help climatetech entrepreneurs build, grow and thrive.
Why I started it
I’m Marianne Lehnis,
I used to work as a journalist but often rallied against the negative news bias; I wanted to create an opportunity for people making outstanding contributions to society and nature to connect and make their voice heard.
When the pandemic broke out, I launched The Green Techpreneur (GT), combining my interest in telling people’s stories with a passion for sustainability and fascination for entrepreneurship and innovation.
The GT has since grown to include the Climate Marketplace – a platform to connect climate founders and investors – and after interviewing dozens of entrepreneurs, I’ve constantly seen barriers to what’s considered possible being broken down. I’m more convinced than ever that solving climate will take all of us, working together, to make it happen.
My aim is to provide you with unique insight and enable connections that keep investments flowing and businesses growing.
It’s my passion and privilege to showcase and support the sustainability leaders who are working hard every day to #SparkTheTransition.
Marianne · Founder & Editor, The Green Techpreneur · CEO, Climate Marketplace · former Forbes climate tech contributor
What to expect
The Green Techpreneur features extraordinary greentech entrepreneurs and investors and shares insight on building in climate. We also help you find funding via our marketplace and get investment-ready. GT is insightful, actionable and fun to read or listen to.
Founder Stories
Founders on Climate Marketplace, in their own words: the moment they started, the hard parts, and how you can help.
Investor Voices
Verified climate investors on what they back, what they pass on, and what they wish founders knew.
Sector Briefings
Short, sourced overviews of each climate theme, refreshed every quarter.
The Founder Playbook
Numbered, practical lessons drawn from founders and investors who have been there.
Founder Wisdom
One line of advice from each founder we feature, for the founders a step behind them.
The newsletter
The best of the magazine in one email. Free, and worth opening.
The Green Techpreneur aspires to:
- Facilitate collaboration by providing a space for pioneers of the green economy to share their founder journey.
- Connect companies with investors to get funding into the right hands.
- Help entrepreneurs get investment-ready.
- Inspire and support entrepreneurs as they develop products and services that enable green lifestyles and a low carbon economy.
- Celebrate and show the impact and strength of greentech as we transition to a low-carbon world.
Advisory board
The people in our corner.
Karolina Lewandowska
Founder, She Leads · Investor and Mentor
Karolina has mentored and advised startup founders in Germany, the US and the UK since 2015, and is a champion of female founders through She Leads, the community she founded for female deeptech entrepreneurs.
Mark Thackeray
Serial entrepreneur
Founded six profitable IT companies and led over $200 million in M&A for corporations.
Emma Coleman
Founder & Director, Emma Coleman Skin Clinics and Emma Coleman Skincare
A former NHS dermatologist who bootstrapped her own beauty business, featured in Elle, The Guardian and Vogue.
Perry McCarthy
Top Gear’s original Stig · former Formula One driver
Brings lessons from an against-the-odds racing career to help green founders keep going through the hard parts of building a company.
Part of the Climate Marketplace family
From a story you love to a founder you back.
We often feature founders and investors listed on Climate Marketplace, the curated platform that connects climate startups with investors. If a story sparks interest, check to see if you can meet the founder there.
Awards & recognition
Winner · Acquisition International Business Leader Awards 2026
Most Influential Climate Tech Investment Leader
Climate Tech Investment & Founder Platform of the Year
Winner · Impact Platform of the Year, 2025
Winner · CorporateLiveWire Innovation & Excellence Awards, 2023
Finalist · The Tilt Content Entrepreneur Awards, 2023
Be featured →
Founders and investors from the Climate Marketplace community can share their story.
Advertise & partner →
Reach climate founders and investors through our newsletter, magazine and marketplace.
Get in touch →
Partnerships or a story tip. We’d love to hear from you.