Silas & Somil

CleanTechies

Welcome to the CleanTechies Podcast, the #1 Podcast for Climate Tech Entrepreneurs -----  Support the show more directly via our Substack where we also publish writing on the episodes we record. https://cleantechies.substack.com/subscribe  -----  Interested in Advertising: info@cleantechiespod.com 

Author

Silas & Somil

Category

Technology

Podcast website

cleantechies.substack.com

Latest episode

Aug 20, 2025

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Episodes

#131 Selling to Utilities, The Disruptor Mistake, Clean Your Camp, Carrot vs Stick Regs, & More w/ Michael Jung (ICF Climate Center) 26.10.2023

In this episode, Silas Mahner (@silasmahner) speaks with Mike Jung from the ICF Climate Center. Given Mike's work across a wide variety of clients currently + his experience in the utility space, we had a lot of interesting things to talk about. Of all the things, perhaps the most interesting, were his insights on selling to utilities. So, if you're selling to utilities, listen up this o...

#130 Financing Emerging Clean Technologies, The Incentive of Repeat Transactions, Hiring a Founding Team, & More w/ Kevin Kyer (Pyrpose.io) 20.10.2023

Why you should listen: Learn how to hire a founding team Find out the secret to properly structured incentives to achieve repeat transactions when working in emerging markets Learn how to communicate your offering to non-climate-nerds Not already a subscriber…subscribe today and support us either financially or through sharing the post. In this episode, Silas Mahner ( @silasmahner ) & Somil Ag...

#129 A Decade of Energy Investing, Impact Investment Hurdles, & Launching a 2nd Fund w/ Jason Blumberg (Earth Foundry) 15.10.2023

Why you should listen: ** How to succeed in building your company from a seasoned ClimateTech and energy investor **How to successfully expand your thesis and launch a new fund **Learn the best ClimateTech industries of the future Show notes: In this episode, Silas Mahner ( @silasmahner ) & Somil Aggarwal ( @somil_agg ) speak with Jason Blumberg from Earth Foundry. Earth Foundry came out of En...

#128 Unraveling the Power of Branding in Climate Tech & Its Transformative Role in Startups w/ Anna Konstantinova 09.10.2023

In this episode, Silas Mahner (@silasmahner) & Somil Aggarwal (@somil_agg) speak with Anna Konstantinova about her advice to climate tech companies in relation to marketing and branding. Really helpful episode for our listeners from someone who has spent a lot of time helping founders and climate brands make their work digestible to the correct target audience. Enjoy the Episode! 🌎 📺 👀 Pref...

#127 Scalable Carbon Capture, Building as a Non-Deeptech Founder, Creative Business Models, & Navigating Funding Challenges w/ Luke Shors (Capture6) 08.10.2023

Why you should listen: **Learn about a new breakthrough carbon capture model  **How you can build a deep tech company as a non-deep-tech founder **How to raise from both public and private funding sources Show Notes: In this episode, Silas Mähner (@silasmahner) and Somil Aggarwal (@somilagg) interview Luke Shors, co-founder of Capture6. Capture6 is a direct air carbon capture company, applying its...

#126 The Value-add of Specialist VCs, Engaging with Corporate Partners, Advice to Founders & Aspiring VCs, Defending Your Moat, & More with Grant Allen (SE Ventures) 01.10.2023

Why you should listen: Discover the role of Specialist VCs in climate change solutions with SE Ventures Learn about SE Ventures and its innovative climate and industrial tech investments Gain insights on collaboration with large companies and startup wisdom   In this episode, Silas Mahner ( @silasmahner ) & Somil Aggarwal ( @somil_agg ) speak with Grant Allen, General Partner at SE Ventures. T...

#125 Revolutionizing Heating and Cooling with Smart Radiators, Facing Rejection, & Building Hardware like Software w/ Marshall Cox (Kelvin) 27.09.2023

In this episode, Somil Aggarwal (@somilagg) interviews Marshall Cox about his journey into being a climate tech founder, the impact of getting a Ph. D. on his journey, how he faced rejection, and how to build hardware like software. Enjoy the Episode! 🌎 📺 👀 Prefer to watch: subscribe on YouTube . 📫 Interested in written summaries and takeaways from the episode? Subscribe to the newsletter . Wa...

#124 Timing, Team, & TAM, Removing the Friction of ESG Reporting and Data Tracking, Utilizing Your Investor Network, & More w/ Tee Ganbold (OpenESG) 24.09.2023

In this episode, Silas Mahner ( @silasmahner ) speaks with Tee Ganbold, the Co-Founder of OpenESG on what she's doing in the ESG tech space.  They have created an incredible tool that operates like ChatGPT but is specifically designed and trained on corporate sustainability data. Instead of spending time researching a company's ESG data and commitments, you can simply ask OpenESG and you...

#123 Driving Adoption in Hard-to-Abate Sectors, Why Not an IP Play, Fundraising for an R&D Shop, Partnering w/ Large Corporates, Hiring PhDs, & More w/ Jeff Erhardt (Mattiq) 17.09.2023

In this episode, Silas Mahner ( @silasmahner ) & Somil Aggarwal ( @somil_agg ) speak with Jeff Erhardt from Mattiq. Jeff had a ton of insights and we are glad to share them with you today. Enjoy the Episode! 🌎 📆 Book a time w/ Silas during Climate Week in NYC (IRL) : https://calendar.app.google/STXX7pMNmsWRsafd6 📺 👀 Prefer to watch: subscribe on YouTube . 📫 Interested in written summaries...

#122 Offset Skepticism, Regulation Driving Demand, Sustainable Supply Chains, Content GTM Strategy, Climate Business Opportunities, & More w/ Saif Hameed (Altruistiq) 14.09.2023

In this episode, Silas Mahner ( @silasmahner ) & Somil Aggarwal ( @somil_agg ) speak with Saif Hameed, the CEO and Founder of Altruistiq, a leading Carbon Emissions accounting software. The conversation is full of insights because Saif has an incredible background, diverse career exposure, and a very good handle on the overall ESG & Sustainability space. Some of the key topics are, how ESG...

#121 Size Matters...Fund Size, Re-industrializing the World, Hardware is NOT Hard, & More w/ Matt McGraw (Anthro Ventures) 08.09.2023

In this episode Silas Mahner ( @silasmahner ) & Matt McGraw ( @mjm11 ), Co-Founder and GP of Anthro Ventures. In the ep we cover his story, their focus, why being a VC is a hard job, how ClimateTech is essentially re-industrializing the world & why that's a good thing, he offered his advice to founders, and we closed off by discussing the role of CT startups in the governance and ESG...

#120 Serial Entrepreneur Fundraising, the IRA & Home Electrification, IRA-Dependent Business Models, & More w/ Jeff Chapin (Haven Energy) 06.09.2023

In this episode, Silas Mahner ( @silasmahner ) & Somil Aggarwal ( @somil_agg ) speak with Jeff Chapin, the Co-Founder of Haven Energy. We heard how he raised the funding for Haven with 2 pitches. He taught us how the IRA aids home electrification. His thoughts on building IRA-dependent businesses. We finish up with his advice to founders. Enjoy the Episode! 🌎 📆 Book a time with Silas in NYC...

#119 Partnering w/ Energy Majors in the Climate Revolution, Houston's Role in the Movement, Discovery Framework, & More w/ Eric Rubenstein (New Climate Ventures) 29.08.2023

In this episode Silas Mahner ( @silasmahner ) interviews Eric Rubenstein about his journey into climate tech, the importance of partnering with Energy Majors in the Climate Revolution, the role of Houston in that movement, Eric's discovery framework, and his ideal founder traits. Overall, a super good episode packed full of insights. Enjoy the Episode! 🌎 📺 👀 Prefer to watch: subscribe on Y...

#118 Carbon Negative Cement, DeepTech Development Frameworks, Hiring a Founding Team, Pointers on an IP Business, & More w/ Cody Finke (Brimstone) 22.08.2023

In this episode, Silas Mahner ( @silasmahner ) and Cody Finke (@ cody_finke ), the Co-Founder of Brimstone discuss Cody's journey into climate and how they are revolutionizing the cement space. They have created a cement product that has just been approved as certified Portland Cement - This is the main cement used in the construction of buildings. The best part, it's carbon neutral in m...

#117 Early Stage Hiring Decisions, Heeding the Lessons from CleanTech 1.0, Energize's $300m Growth Fund Close, & More w/ Eileen Waris (Energize Capital) 15.08.2023

In this episode Silas Mahner ( @silasmahner ) and Eileen Waris (@eileen_waris) have a conversation about her experience, what they are doing at Energize Capital (FKA Energize Ventures), the state of climate tech VC, advice to founders, and a lot more. We had the pleasure to speak with them on the day they changed their name and announced the close of their second growth fund ($300m) Reach out to E...

#116 Consultative VC, Understanding Customers (as a VC), Developing Industry Networks for Your PortCos, & More w/ Rick Zullo (Equal Ventures) 08.08.2023

In this episode Silas Mahner ( @silasmahner ) and Rick Zullo ( @Rick_Zullo ) discuss, Rick's career trajectory to VC, the thesis behind Equal Ventures, his thoughts on the CTVC's H1 Funding report, and his advice to founders and VCs. This episode is densely packed with value as Rick has clearly thought a lot about these problems. Perhaps my favorite takeaways are 1) that he views VC as m...

How Logical Buildings Built the First Residential & C&I Energy Management Service w/ CEO, Jeff Hendler 02.08.2023

In this episode, Silas Mahner ( @silasmahner ) speaks w/ Jeff Hendler Co-Founder and CEO of Logical Buildings (@ logicalbldgs ) about his journey from Wall Street, to the Utility, to founding a Smart Building company. We also cover how their Grid Rewards program works, how a company like this can be competitive, and what he sees as the next big challenge to solve. Enjoy the Episode! 🌎 📺 👀 Prefe...

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

In this episode, Silas Mahner ( @silasmahner ) and Somil Aggarwal (@ Somil_Agg ) have a discussion about two things. First, their thoughts and reaction to the H1, 2023 Funding Report by CTVC Second, a conversation around the transferable tax credits created by the IRA and what areas we think are the biggest areas for growth or opportunity because of those. Hope you enjoy this episode! 🌎 📺 👀 Pre...

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

In this episode, Silas Mahner ( @silasmahner ) speaks w/ Stephen Brittain from Insurtech Gateway ( @Ideas_Gateway) . They are incubating Impact Risk Mitigation and Insurance Companies / Products. On the back end, they invest and connect these companies with partners in the insurance space and other VCs. Today's conversation is a bit high-level but has many great insights. Enjoy the Episode!...

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

In this episode Silas Mahner ( @silasmahner ) speaks w/ Alex Blum ( @AlexBlum4Austin ) Co-Founder and CEO of Applied Bioplastics ( @abioplastics ) about his journey into founding the company, their experience commercializing the tech, their business model, and his advice to other founders doing something similar. In addition to having some great stories and things to say, Alex is also quite funny...

The Future of the EU Climate VC Landscape, Transparency, & Challenges: Exploring Climate Tech Investing w/ Heidi Lindvall (Pale Blue Dot) 19.07.2023

In this episode, Silas Mahner ( @silasmahner ) speaks w/ Heidi Lindvall ( @HeidiLindvall ) a founding partner of Pale Blue Dot ( @PaleBlueDotVC ). This is Heidi's second time on the show and in today's episode, we focus on what they are doing to level up. They are a 3-year-old fund now, and we cover what they are doing to continue maturing their network and processes. A lot of value in t...

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...

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 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/ **📺...

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