The #1 Podcast for ClimateTech Entrepreneurs

CleanTechies Podcast

We are CleanTechies, the #1 Podcast for ClimateTech Entrepreneurs. Whether you’re an active ClimateTech entrepreneur, an aspiring one, an investor, a service provider…anything that touches supporting early stage climate tech, this is the place for you. Each week, we publish two interviews with leading experts in the field telling their stories, insights, and advice to help ClimateTech Entrepreneurs like you be inspired by their successes and learn from their mistakes. cleantechies.substack.com

Author

The #1 Podcast for ClimateTech Entrepreneurs

Category

Technology

Podcast website

cleantechies.substack.com

Latest episode

Jul 3, 2026

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Episodes

#114 - Reflecting on H1 2023 CT Funding & Discussing Transferable Tax Credits Along with the Opportunities they Present (Somil & Silas) 27.07.2023

(The following summary is courtesy of HostAI via the Buzzsprout Platform) Imagine navigating the complex landscape of Climate Tech, where the surge of corporate venture capital has doubled from 2021 to 2022. How do you determine whether your hardware company should raise venture scale or seek other financing options? In this episode, we tackle these critical questions and more, examining insights...

#113 - Incubating Climate Risk / Insurance Solutions as Traditional Insurers Pull Back w/ Stephen Brittain (Insurtech Gateway) 26.07.2023

CleanTechies is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber. (the following summary is provided by CoHost. AI via the Buzzsprout Platform) Are you ready to unravel the intricacies of InsureTech with industry innovator, Stephen Britton? Our discussion takes you on a journey through Stephen's unique transition from a mechanica...

#112 - How to not be Another Failed Green Plastics Chemistry Company, Refugee Shelters, & Selling to Producers, not Brands w/ Alex Blum (Applied Bioplastics) 23.07.2023

CleanTechies is a reader-supported publication. To receive new posts and support our work, consider becoming a free or paid subscriber. (Generated via CoHostAI) Want to redefine sustainability in a truly impactful way? Alex Blum, the innovative founder, and CEO of Applied Bioplastics, shows us how in our latest episode. The conversation illuminates Alex's journey from being a seasoned salesman to...

#111 - Ensuring CT Startups Will be Able to Raise from Conventional Investors & More w/. Heidi Lindvall (Pale Blue Dot) 19.07.2023

Hello, Clean Tech enthusiasts, and welcome to an enlightening conversation with Heidi Lindvall, a pioneering spirit in the climate tech venture landscape and one of the founding partners at Pale Blue Dot. Buckle up as we delve into the highlights of their recent feat — closing a 93 million euro fund, and the roller-coaster ride of climate tech investment in Europe. Get ready to unravel the intrica...

Redefining Waste through 3D Printed Clay Containers | Earth to Earth w/ Sanjeev Mankotia (GaeaStar) 16.07.2023

In this episode, Silas Mahner ( @silasmahner ) speaks w/ Sanjeev Mankotia, the Founder and CEO of GaeaStar. They are on their way to solving the issue of single-use plastic pollution with their 3D printed, clay-cup solution. You might think it sounds crazy, but once you hear the episode, you can understand how this is very much within reach. It's a fascinating episode with a lot of value for compa...

From Coal to Climate, VC Channel Sales Partners, LP Sentiment & More w/ Albert Bielinko (Telstra Ventures) 09.07.2023

In this episode, Silas Mahner ( @silasmahner ) speaks w/ Albert Bielinko ( @bielinko ) a Partner at Telstra Ventures. Albert leads their CT investments and speaks to us today about many things,  from how he started in coal to end up in climate. How they have helped their portfolio companies generate over $450m USD in sales through their channel partnerships. What the LP sentiment on CTVC is and hi...

Sawdust to Chemicals; Building a BioChemical Startup w/ Julie Kring (Khepra) 02.07.2023

In this episode Silas Mahner ( @silasmahner ) speaks w/ Julie Kring, ( @KringJu ) the founder of Khepra to discuss her journey into ClimateTech, how they are making biochemicals for AgriTech use cases out of sawdust, and her advice to founders doing similar things. Enjoy the Episode! 🌎 📺 👀 Prefer to watch: subscribe on YouTube . 📫 Interested in written summaries and takeaways from the episode?...

Planeteer News Reaction, Thought Leadership in CT, & Leveraging Reputation w/ Somil Aggarwal 26.06.2023

Today Somil ( @somil_agg ) and Silas (@ silasmahner ) have a discussion reacting to the news about Planeteer Capital and more broadly on the topic of thought leaders and ClimateTech. We welcome Somil as a guest that you are likely to see more frequently as we intend to do more content like this. So, please let us know if you enjoy it.** Checkout Somil's Newsletter, SIP: https://sip.beehiiv.com/ **...

Ep #106 - Using Blockchain to Verify Carbon Offsets | Blockchain & Climate Are Compatible w/ Alan Ransil (Filecoin Green) 25.06.2023

What if there was a way to revolutionize data storage for companies and organizations while also promoting sustainability and transparency? Join us as we chat with Alan Ratzel from Filecoin Green, an initiative by Protocol Labs that aims to do just that by utilizing the power of blockchain technology. Throughout the episode, we explore how Filecoin Green creates verifiable carbon credits, tracks t...

Dealing w/ Bandwagoning, Incubators, & Moats, with Alex Mitchell (Full Turn Capital) 18.06.2023

Ever wondered how CleanTech investments and business models are shaping the industry? In this episode, we're joined by Alex Mitchell, founder of Full Turn Capital, to explore the ins and outs of investing in the climate tech space. From understanding the potential of pre-seed and seed-stage businesses to creating long-term competitive advantages, we discuss it all with Alex. Dive into the challeng...

#104 From Restaurants to ClimateTech: Building a Carbon Capture Concrete Company w/ Tim Sperry (Carbon Limit) 11.06.2023

What happens when a successful restaurateur decides to tackle climate change? Tim Sperry, CEO and founder of Carbon Limit, joins us to share his incredible journey from the restaurant business to creating a carbon capture technology company. With a mix of passion and business acumen, Tim offers valuable advice on finding the right investors, joining industry organizations, and navigating the regul...

#103 - Revolutionizing Takeout: Tackling Plastic Waste Crisis with Reusable Containers and Gamification w/ James Wilson (reUser) 04.06.2023

Ever wondered how we could tackle the global plastic waste crisis, especially with the increase in takeout packaging during the pandemic? Today, we're thrilled to have James Wilson, founder, and CEO of ReUser, join us to share his innovative solution that focuses on reusable containers for dining institutions. James opens up about his journey in discovering the issue of takeout packaging waste and...

#102 - Harvard -> D.E. Shaw -> Obama Administration -> Decarbonizing Refrigeration w/ Manik Suri (GlacierGrid) (fkna Therma) 28.05.2023

In this episode, Silas Mahner ( @silasmahner ) speaks with Manik Suri ( @ManikVSuri ) the Founder and CEO of Therma, an IoT device + software company that helps any organization using refrigeration to reduce cap ex and as a by-product, reduce the dirty energy assets on the grid. We cover his background, the problem and solution they are working on, and then go through building the business with a...

#101 Building a Smart AC company to help Solve Climate Change w/ Ran Roth (Sensibo) 22.05.2023

Today we speak with Ran Roth, the Co-Founder and CTO of Sensibo, an IoT device company that connects your AC units to various services to help you use your AC unit more efficiently. Ran started with a tech background, focused on data and with his co-founder, decided he wanted to start a business. They didn't specifically focus on climate, but did want to do something good for the world. Of course,...

Extracting Precious Metals from Catalytic Converters to Solve Climate Change w/ Greg Pendura (Regenx) 17.05.2023

In this episode, Silas Mahner ( @silasmahner ) speaks with the CEO of publicly traded, Regenx, Greg Pendura. Regenx is a metals recycling company recovering precious metals from catalytic converters and selling it on the market or providing the service directly to OEMs. Greg explains the problem they are solving, how they are solving it, the back story of the company, how they funded the project,...

Capturing Methane to Power Data Centers in Remote Areas w/ Andreas Lehner (PowerBlocks) 14.05.2023

In this episode Silas Mahner ( @silasmahner ) speaks with Andreas Lehner ( @lehner_a ) about what he's doing with his new company PowerBlocks to capture methane that is just being flared, using that energy to power data centers or bitcoin mining, how he got interested in Climate, how to build an MVP with a hardware business, a short discussion around AI and the energy grid, and how he stays focuse...

How to build an MVP with a complex ClimateTech Startup - Andy Frank, Founder of Sealed 05.05.2023

Today we have a really energetic (no pun intended) conversation with Andy Frank, the founder of Sealed. They are an energy efficiency company that pays for home infrastructure upgrades and then gets paid back over time by their customer. The more efficiency they produce, the more they make which creates a great incentive structure. We discussed a lot but the best part for me was going through how...

#97 Cutting Building Heat Loss Via Windows & Building a Platform for Glass Technology Firms w/ Anas Kassas (INOVUES) 04.05.2023

In this episode, Silas Mahner ( @silasmahner ) speaks with Anas Al Kassas the founder and CEO of INOVUES where they are helping solve heat loss for buildings. Their tech is essentially a retrofit solution to single-pane glass that can be achieved at scale. They are also partnering with other companies such as solar glass and tinting services to act as a platform for them to sell their tech. The ke...

Real Conversations about the Challenges, Insecurities, and Joys of Building a ClimateTech Startup w/ Alina Liu (Disco) 28.04.2023

Today we had a really fun, but also impactful, and very transparent conversation, one that is slightly different than a lot of the guests we've had on. Someone who is a lot earlier in her journey of building her company. I wanted to have her on as an opportunity to showcase the life of someone deep in the grind of building their startup with the hope to one day make a massive impact on climate cha...

Food Waste to Energy; A new Vertical of Infrastructure w/ Ryan Begin (Divert) 26.04.2023

Today we are joined by Ryan Begin. One of the founding members of Divert. Divert is building food waste to energy plants that have achieved the scale to become profitable, scalable, and impactful in combating climate change. This is a truly inspiring story as it took them about 13 years to get to the point of proving their technology and perfecting the business model in a way that they could then...

Unlocking the Power of Oceanic Carbon Capture w/ Ben Swainbank (Oceanid MRV) 22.04.2023

Today we are joined by the founder of Oceanid MRV, Ben Swainbank.  For context, carbon capture and the measurement of how much is captured is something pretty well solved in forestry and direct air capture. However, for oceanic capture, it is not. This presents a big dilemma as Oceanic Carbon Capture is widely regarded as the most scalable method to pull carbon out of the air at a gigaton scale. ...

#93 Hard Truths About VC, Raising Advice, & Small Fund Limitations w/ Susan Su (Toba Capital) 22.04.2023

Today we were joined by Susan Su. Susan is a Partner at Toba Capital which differentiates from many funds in that it only has one LP. That LP invests across a range of spaces which allows the Toba team to get special insight into other areas of investing which could affect their investments and existing portfolio companies.  Susan has to be one of the most genuine people I've had on the show. She...

Cleaning up Oceans at the Source...Rivers w/ Nicola Rubini (Conai) 22.04.2023

Today we are joined by Nicola Rubini from the River Cleaning Project by Conai.  You may not know, but 80% of plastics that end up in the ocean are deposited there by rivers. Today we speak with Nicola about how they are trying to fix this problem given that rivers are conveniently a focused path of water.  The technology they have is pretty fascinating but what's more, is the nuances required to n...

How Keyframe is Bridging the Gap from Pure VC to Pure PE Financing for Hard Tech COs w/ Ethan Goldsmith 22.04.2023

Today we have a pretty interesting capital provider joining us. Ethan Goldsmith is an Investment Partner at Keyframe Capital and helped found TeraWatt Infrastructure (the fleet charging behemoth).  We went through the usual stuff around his background, early career, what they are doing, how they source deals, and their unique points but the core of this conversation in my opinion is really in thei...

#90 Total Real Estate Retrofits, RE Valuations, Tenant Education, & More w/ Chris Gray (RENU Communities) 28.03.2023

Today we are joined by Chris Gray, the CTO of RENU Communities.  At it's simplest form, they are a PE Fund that is doing total retrofits on real estate to make it a sustainable building.  The more interesting aspects of what they are doing are,  they have an in-house set of experts that are able to help them integrate engineering knowledge with the financial modeling of the projects  they tak...

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