Tibor Toth

Climate Tech Venture Investor

📍 Greater Boston, United States🔄 Updated September 2026💼 23 investments📅 19 years investing🗓 Last invested Dec 2025𝕏 @upgrade_to_unlock
VC🌍 United States20+ investmentsInvested this year
23
Total investments
2
Early stage
9
Mid stage
5
Late stage
19y
Years active

Portfolio

20 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Board Observer
Dec 2025
At Via Separations, we take a materials approach to the worlds wasted energy. We are optimistic about scientific progress, passionate about global impact, and creative in everything we do. We are not afraid of hard problems, and we encourage each other to live at the intersections of disciplines, act on great ideas, and design everything. Via eliminates energy use in industrial processes, enabling pathways for a more sustainable, resource efficient future. With its core filtration technology, Via can slash the energy used in separation processes by 90%. We are a fast-paced, interdisciplinary team backed by The Engine, Safar Partners, Prime Impact Fund, and MassCEC.
late stageManufacturing
Board Member
Mar 2024
At Parallel Carbon, were on a mission to halt climate change through innovative solutions. Our technology combines Direct Air Capture (DAC) and Water Electrolysis processes, harnessing solar and wind power to remove carbon from the atmosphere and produce clean hydrogen affordably. With a commitment to sustainability, by 2030 we will capture carbon for under $100 per ton and generate clean hydrogen for $1 per kilogram. Embracing a dual process — ancient geochemistry coupled with modern electrochemistry — were doubling our efforts against climate change.
Board Observer
Jul 2023
Boston Metal is delivering a future where primary steel production is free of carbon emissions. Our Molten Oxide Electrolysis (MOE) technology provides the metals industry with a more efficient, lower cost, and greener solution for the production of a range of metals and alloys from a wide variety of feedstocks.
Member, Strategic Investor Advisory Board
Dec 2022
Were hiring!! Rondo is delivering the worlds lowest cost zero-carbon industrial heat. The Rondo Heat Battery powers industrial processes with renewable electricity, cutting energy costs and eliminating emissions. We deliver complete solutions to large-scale industrial energy needs worldwide - both as major capital projects and on a Heat as a Service basis. The Rondo Heat Battery provides temperatures up to 1,500°C, at less than half the cost and twice the efficiency of hydrogen.
Board Member
Nov 2022
Noon Energy provides 24/7/365 clean, reliable electricity with ultra-long duration energy storage, enabling speed-to-power for data-center load growth and other electrification.
Board Observer
Jun 2022
Amogy provides carbon-free energy solutions to decarbonize hard-to-abate sectors such as maritime, power generation and heavy industry. Proven in real-world applications, its patented ammonia cracking technology is mature, scalable, and a highly efficient method for splitting liquid ammonia, generating electrical power in combination with hydrogen fuel cells.
Board Observer
Apr 2021
Blackburn Energy, Inc., a commercial manufacturer of clean energy power solutions. RelGen™, - a kinetic energy recovery system (KERS) generates, captures and stores otherwise wasted energy – 5X more energy than standard truck alternators. RelGen charges 12 kWh to 20 kWh more than the current systems – driving the electric revolution in transportation. Blackburn can turn any truck into a mobile platform for the creation, storage and delivery of renewable electricity.
Board Observer
Oct 2019
Opti provides cloud-based solutions to connect, manage, and operate stormwater systems at watershed scale. Our mission is to protect water resources by optimizing the interactions between volatile natural systems and the built environment. Our products help communities and businesses turn stormwater infrastructure into smart, resilient systems at greatly reduced cost and with less risk than existing alternatives.
Board Member
Jul 2019
Sistine Solar is a venture-backed Boston-based startup founded by MIT alums. Its flagship technology, SolarSkin®, is a patented aesthetic overlay that transforms the look of any solar array. It can make the array blend in with a homeowner’s roof—no matter what color, pattern, or style. Or it can convert it into a branding asset for businesses, an advertising medium for marketers, signage for street furniture, a canvas for an artist—the possibilities are endless. SolarSkin was developed with the support of a $1million DOE SunShot award, has been rigorously tested for long-term durability at the National Renewable Energy Lab, and has been deployed in installations in 20 states around the country. For more, please visit https://www.sistinesolar.com.
Board Member
Aug 2018
Idle Smart's proprietary software allows fleets of all sizes to reduce extended idle fuel costs by 50-70% and eliminate vehicle downtime due to battery or cold weather issues. Idle Smart can be easily paired with existing in-vehicle solutions, including bunk heaters and eAPU brands. Our Fleet Management Suite provides proactive diagnostic alerts and remote management from anywhere in North America.
Board Member
Sep 2016
eCurv’s leading edge technologies improve the quality of electric service, drive higher operational margins, and ensure the efficient, reliable, and secure distribution of electricity whenever and wherever it is needed We are dedicated to the singular objective of cutting the cost of energy, while simultaneously reducing reliance on fossil-fueled power generation. eCurv’s software services help clients manage the ever-increasing demand for the energy that powers their critical infrastructure Join the eCurv movement. Power up. Pay less.
Board Member
Sep 2016
WorcLab is a community of entrepreneurs making the world better through innovation. Our 11,000 sq. ft. facility in downtown Worcester includes customizable prototyping space and walk-in ready desk and office space. We offer in-house business resources, management guidance, technical assistance, and equipment access The facility also includes event space in which to host seminars, speaker series, and networking events to further collaboration and innovation in the region. Amenities include three conference rooms, a kitchen with complimentary beverages, mail service, and secure 24-7 access. With access to industry specific mentors, a capital investment fund manager, and OEM manufacturers, WorcLab will ensure that startup companies and entrepreneurs have the resources they needs to grow their business. Our mission is to help businesses get their products into customer's hands faster and cheaper. WorcLab is affiliated with regional industry associations including NECEC, Cleantech Open Northeast, ACTION, and MassCEC. Whether you need access to advanced testing facilities, IP services, public policy guidance, design for manufacture or global distribution, WCTI will make sure you are connected. WorcLab is located in the heart of downtown Worcester, just a few minutes walk from Union Station—providing frequent commuter rail service to Boston and beyond. Just minutes from WorcLab you can access Worcester’s premier restaurants on Shrewsbury Street, see a show at the famous Hanover Theatre or DCU Center, grab a drink at local Wormtown Brewery, and explore Worcester’s social scene in the Canal District. Worcester Common is just steps away for a quick break outdoors for the Out to Lunch Summer Concert Series and farmer’s market or ice skating in the winter. WorcLab is operated through the Institute for Energy and Sustainability, a 501c3 non-profit.
Board Observer
Aug 2016
WeSpire is the employee experience solution that empowers forward-thinking global organizations and their employees to reach their greatest potential. With the only configurable library consisting of hundreds of action-based programs backed by applied behavioral science, WeSpire enables individuals and entire organizations to drive measurable, positive impact. Follow us on twitter @goWeSpire.
Board Member/Observer
Aug 2016
LoCI Controls' real-time, data-driven platform maximizes methane capture and minimizes landfill gas emissions. Combining patented and patent-pending technology, LoCI's system — including the WellWatcher® user interface and wellhead- and header-mounted components: • Increase gas collection over manual tuning • Optimize gas quality and flow • Offer 24/7/365 monitoring of each collection well to maximize methane collection • Reduce operating costs • Maintain gas quality specifications at inlet to plant • Improve site safety by eliminating the need for well tuning in dangerous conditions • Reduce environmental, health, and safety risks LoCI's automated gas collection operations are supported by a team of analysts who monitor the real-time data and respond accordingly to changing atmospheric conditions. On-the-ground technicians provide all required maintenance as well as technical and operational support for customers. The result: maximized gas collection system efficiency and customer-specified landfill gas composition standards met. Founded in 2013 by MIT graduates, LoCI Controls is led by Peter Quigley, CEO and Chairman, a seasoned leader in disruptive energy technologies.
Board Member
Oct 2014
OUR MISSION: EnergySage is on a mission to empower people everywhere to switch to affordable, reliable clean energy solutions with trusted resources, unbiased advice, and a simple shopping experience. WHO WE ARE: Every day, millions of Americans shop for clean energy products and energy-saving solutions, and thousands of companies look for well-qualified customers to connect with. But the process is often complex, expensive, and intimidating. That’s why we built EnergySage – the simplest, most trusted way to make confident energy decisions and to gain control over the buying process. EnergySage connects people with vetted, local installers and providers who compete to earn their business. But we don’t stop there. We help you easily and confidently switch to solar, batteries, community solar, heat pumps, electric vehicles, and more by providing access to transparent information, unbiased advice, and a best-in-class shopping experience. WHAT WE DELIVER: Simplicity: Easy access to competitive quotes from local, prescreened installers Savings: Access 20% lower prices (or more) vs. going it alone Trust: Transparency and objective advice with no pushy sales tactics WE ARE GROWING: EnergySage is growing fast and always looking for passionate, smart, and talented people to join the team. There’s never been a more important, rewarding time to work in climate tech. See opportunities on our career page: energysage.com/about-us/careers/
Show all 20 investments ↓
Experience · 30 entries
All (30)
Investments (23)
Board (22)
2025
Board Observer
Dec 2025
At Via Separations, we take a materials approach to the worlds wasted energy. We are optimistic about scientific progress, passionate about global impact, and creative in everything we do. We are not afraid of hard problems, and we encourage each other to live at the intersections of disciplines, act on great ideas, and design everything. Via eliminates energy use in industrial processes, enabling pathways for a more sustainable, resource efficient future. With its core filtration technology, Via can slash the energy used in separation processes by 90%. We are a fast-paced, interdisciplinary team backed by The Engine, Safar Partners, Prime Impact Fund, and MassCEC.
late stageManufacturing
2024
Board Member
Mar 2024
At Parallel Carbon, were on a mission to halt climate change through innovative solutions. Our technology combines Direct Air Capture (DAC) and Water Electrolysis processes, harnessing solar and wind power to remove carbon from the atmosphere and produce clean hydrogen affordably. With a commitment to sustainability, by 2030 we will capture carbon for under $100 per ton and generate clean hydrogen for $1 per kilogram. Embracing a dual process — ancient geochemistry coupled with modern electrochemistry — were doubling our efforts against climate change.
2023
Board Observer
Jul 2023
Boston Metal is delivering a future where primary steel production is free of carbon emissions. Our Molten Oxide Electrolysis (MOE) technology provides the metals industry with a more efficient, lower cost, and greener solution for the production of a range of metals and alloys from a wide variety of feedstocks.
2022
Member, Strategic Investor Advisory Board
Dec 2022
Were hiring!! Rondo is delivering the worlds lowest cost zero-carbon industrial heat. The Rondo Heat Battery powers industrial processes with renewable electricity, cutting energy costs and eliminating emissions. We deliver complete solutions to large-scale industrial energy needs worldwide - both as major capital projects and on a Heat as a Service basis. The Rondo Heat Battery provides temperatures up to 1,500°C, at less than half the cost and twice the efficiency of hydrogen.
Board Member
Nov 2022
Noon Energy provides 24/7/365 clean, reliable electricity with ultra-long duration energy storage, enabling speed-to-power for data-center load growth and other electrification.
Show all 30 entries ↓
Investment activity
2007–2025 · 23 investments
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