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Dear Friends of Greentown,

Greentown Houston opened on Earth Day 2021, and this month we’re inviting you to a special Transition On Tap to celebrate our fourth anniversary!

The April 29 event will feature startup perspectives on developing and scaling climatetech in Houston. Join us to hear from longtime members Ian Bishop, founder and president of Elemental Advanced Materials, and Dr. Tara Karimi, co-founder and chief science & sustainability officer of Cemvita! We’re excited to have Jane Stricker—a Greentown board member and the Houston Energy Transition Initiative’s senior VP, energy transition & executive director—provide remarks.

This Transition On Tap will also offer the opportunity to network with key leaders from throughout the region’s energy-transition ecosystem. We hope to see you there!

Warmly,
The Greentown Team

Meet Our Newest Member

Janta Power is pioneering a new era of energy with its groundbreaking, three-dimensional solar technology.

Member Milestones

Haffner Energy announced a €7M capital increase "through ABSA issuance with preferential subscription rights."
Mars Materials's CEO Aaron Fitzgerald was named a 2025 Lewis Latimer Fellow.
Twenty Greentown members and alumni across our two incubators were named to TIME America’s Top GreenTech Companies of 2025 list: AIRCO, Amogy, CarbonFree, C16 Biosciences, Cemvita, Ebb Carbon, Ecolectro, Electra, Fervo Energy, Form Energy, InventWood, Malta, Nth Cycle, Ohmium, SparkCharge, Sublime Systems, Syzygy Plasmonics, Type One Energy, WeaveGrid, and Verdox.
Nine Greentown members and alumni from both our locations were chosen for Third Derivative’s newest cohort: Carbon Negative Solutions, CERT Systems, Eden, Elementium Materials, Hertha Metals, MicroEra Power, Mitico, NOC Energy, and Via Separations.
Greentown alum Fervo Energy signed a 15-year power purchase agreement for 31 MW of 24/7 carbon-free geothermal power with Greentown partner Shell Energy North America.
Carbon to Value Initiative alum Capture6, which removes carbon from the atmosphere while producing clean water and other industrial products from saltwater, raised $27.5M between a Series A and project financing.

Investing Insights

Our Q1 investor roundtables were chock-full of insights into the rapidly changing climatetech-investment landscape. Check out key takeaways:

Everyone still believes in the urgent need to decarbonize, but the playbook is changing. Funding is harder to get, policies are shifting, and more than ever startups need to prove they can make money, not just make an impact.
The funding crunch is forcing discipline. Startups that have tightened operations, focused on customer revenue, and pursued capital-efficient models are thriving.
Some sectors may emerge as bipartisan winners. Grid resilience, domestic critical minerals, and nuclear energy were highlighted as areas where policy support could endure.
Industrial decarbonization, grid-edge innovation, and maritime and heavy transport may be pragmatic bets for a tough market.

Mark Your Calendar for These Upcoming Events

May 12-14: Investor Activation Series [Greentown Houston]
Join our Houston Ion District Investor Activation Program to participate in this three-day series crafted for investors interested in the future of climatetech. Indicate your interest in attending each session here.

May 13: Manufacturing Sector Networking [Greentown Houston]
Come for an evening of networking with Greentown startups in the manufacturing sector around cutting-edge solutions for sustainable and resilient manufacturing.

June 12: Transition On Tap [Greentown Houston]
Beat the heat with us at our June Transition On Tap networking event, which will feature several of Greentown Houston's newest members.

Aug. 21: Transition On Tap [Greentown Houston]
Round out your summer at our August Transition On Tap!

Sept. 15-19: Houston Energy and Climate Startup Week [Ecosystem Event]
The Houston Energy and Climate Startup Week—of which Greentown is a lead partner—brings together leading energy and climate venture capital investors, industry leaders, and startups from around the world to showcase the most innovative companies and technologies that are transforming the energy industry while driving a sustainable, low-carbon future. Stay tuned for more details in the coming months about events throughout the week, including Greentown and Browning the Green Space’s ACCEL Showcase on Sept. 18!

Nov. 4 + 6: Climatetech Summit [Greentown Houston + Greentown Boston]
Climatetech Summit is our largest event of the year and the premier gathering of climate and energy entrepreneurs, investors, corporate leaders, and policymakers accelerating the energy transformation.

Step into our incubators for a day of hands-on exploration of climatetech solutions from 200+ startups, insightful keynotes and discussions with industry leaders, and unparalleled networking opportunities!

If you want to get involved with the highest-visibility event of the year at Greentown, please reach out to learn about sponsorship opportunities.

Thank You to Our Partners 🌎

Come Celebrate Greentown Houston’s Fourth Anniversary!