13
Total investments
3
Early stage
3
Mid stage
2
Late stage
6y
Years active
Portfolio
11 investments · sorted by recency
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Mid stage
Late stage
Board Member
Mar 2026
A network for entrepreneurs building in stealth.
Submit your information here so investors can find you:
harmonic.ai/get-discovered
Board Member
Dec 2025
As the AI-native operating system for energy regulation, HData serves the largest customer ecosystem in regulated energy, helping utilities, regulators, advocates, advisory firms, corporates, and energy technology companies navigate regulatory complexity. Through centralized data, domain AI, and purpose-built applications, HData accelerates the research, analysis, and workflows critical to how the future of energy is decided.
Investor
Apr 2025
Crux is the capital platform for the clean economy. Our expert team, leading market intelligence, and AI-powered software are changing the way clean energy developers, manufacturers, and investors raise and deploy the capital needed to power a more prosperous, clean, and secure energy future. Crux facilitates transactions across the full stack, including transferable tax credits, debt capital, and tax and preferred equity.
Securities are only offered through Crux Capital Securities, LLC, a member of FINRA and SIPC. Crux Capital Securities, LLC is a broker-dealer registered with the SEC and various states.
Board Member
Dec 2024
Sunairio is the first software company to leverage high-resolution probabilistic climate data for energy investment, portfolio strategy, and business insights. Our technology is a comprehensive ecosystem powered by the most lifelike replication of climate, asset, and market variability — helping you make decisions that increase revenue, ensure reliability, and reduce risk.
Board Member
Oct 2024
Treehouse is a software-enabled installation platform for electrification projects. Our mission is to accelerate the decarbonization of the places we live and work by simplifying the electrification journey. By operating as a centralized, end-to-end partner, Treehouse helps companies scale electrification programs nationwide and deliver seamless, delightful installation experiences for customers.
Board Member
Dec 2023
Cultivo accelerates investment into nature at scale.
We do this by showing how investing in natural capital can generate healthy financial returns that are good for nature and society.
- We use proprietary algorithms and remote sensor technologies to identify high quality projects and forecast the natural capital returns.
- We then package those projects into investment products for financial institutions and corporations to invest in.
- The investment finances sustainable activities that restore and protect nature, such as regenerative grazing or forest management.
- Cash flows from the natural capital flows (e.g. carbon or water offsets) are generated by these activities, providing reliable long term income to the project and financial returns to the investors.
Board Observer
Jul 2020
Mainspring is a power generator manufacturer redefining how local power is delivered to capacity constrained companies and communities. No other primary power solution can match the flexibility, affordability, and low emissions of a Mainspring Linear Generator. Mainspring customers across key industries — utilities, data centers, enterprise, and industrial — are taking control of their energy futures.
Board Member
Jun 2020
Volta is a new model for investing in energy technology. Volta identifies and works with entrepreneurs and companies to solve their most important technical challenges while providing its strategic investors the opportunity to invest in and acquire the most promising of these technology companies. Volta serves investors from across sectors of the energy system, who have complementary strategic interests in identifying breakthrough energy storage-related technology that will enable ubiquitous adoption of both electric vehicles and renewable power generation.
Volta works to validate transformative technologies and businesses through collaboration with leading institutions, including through its research agreement with Argonne National Laboratory. Volta’s focus is on technologies and businesses that impact applications in transportation, the electric grid, and portable electronics. Volta is designed to create strategic advantages for our corporate partners’ core businesses and deliver financial returns.
Board Observer
May 2020
Commonwealth Fusion Systems (CFS) is on a mission to deliver clean fusion energy to the planet fast enough to matter for humanity’s biggest challenges.
It’s urgent. The gap between the energy we need and the energy we have is widening every day. Fusion is a critical part of the energy transition away from fossil fuels, a new chapter for the world’s energy supply.
We’re committing to delivering fusion power plants and a full-fledged fusion energy industry as we’ve delivered on other promises. Like the world’s strongest high-temperature superconducting magnet, the game-changing technology that’s making commercial fusion energy a reality.
We’ve raised over $2 billion in capital — more than any other fusion energy company — and attracted top talent to design, build, and deliver commercial fusion power plants. And we’re working with policymakers and suppliers to make fusion energy available globally.
As we push toward the fusion-energy future, we’ll keep setting and meeting milestones, sharing and validating our progress, and encouraging others to do the same.
If you are interested in joining our team, check out cfs.energy/careers for more information.
Board Observer
Feb 2020
We are simplifying renewable energy asset management by offering purpose-built technologies and services that help our customers deliver industry-leading productivity, efficiency and returns. Every day we help our customers unlock the power of their data so they can make confident, informed decisions. Our team brings deep industry experience and a willingness to get our hands dirty to first understand and then solve customer problems on the ground. Learn more about our best-in-class technologies and how we’re helping the renewable energy industry realize its potential.
Experience · 20 entries
All (20)
Investments (13)
Founder (1)
Board (12)
2026
Co-Founder & Head Stick Boy
Apr 2026
Climate Cup is a unique Climate Week event that uses hockey to connect climate technology entrepreneurs, investors, and industry leaders. Through a hockey game and post-game event, were exploring how passion for hockey can inspire climate action, how rinks and arenas can serve as test beds for energy innovation, and how lessons from hockey can help leaders build great companies and venture funds. Sponsors include: MassMutual Ventures, Blue Bear Capital, Mahoney Communications Group, Mintz and Stifel--five firms at the center of the climate tech economy. Climate Cup is proud to partner with NHL Green, building on MassMutuals partnership with the National Hockey League.
Board Member
Mar 2026
A network for entrepreneurs building in stealth.
Submit your information here so investors can find you:
harmonic.ai/get-discovered
2025
Board Member
Dec 2025
As the AI-native operating system for energy regulation, HData serves the largest customer ecosystem in regulated energy, helping utilities, regulators, advocates, advisory firms, corporates, and energy technology companies navigate regulatory complexity. Through centralized data, domain AI, and purpose-built applications, HData accelerates the research, analysis, and workflows critical to how the future of energy is decided.
Investor
Apr 2025
Crux is the capital platform for the clean economy. Our expert team, leading market intelligence, and AI-powered software are changing the way clean energy developers, manufacturers, and investors raise and deploy the capital needed to power a more prosperous, clean, and secure energy future. Crux facilitates transactions across the full stack, including transferable tax credits, debt capital, and tax and preferred equity.
Securities are only offered through Crux Capital Securities, LLC, a member of FINRA and SIPC. Crux Capital Securities, LLC is a broker-dealer registered with the SEC and various states.
2024
Board Member
Dec 2024
Sunairio is the first software company to leverage high-resolution probabilistic climate data for energy investment, portfolio strategy, and business insights. Our technology is a comprehensive ecosystem powered by the most lifelike replication of climate, asset, and market variability — helping you make decisions that increase revenue, ensure reliability, and reduce risk.
Show all 20 entries ↓
Investment activity
2020–2026 · 13 investments
Recent (last 2 years)Earlier
