Jeff Glavan

Tech & cleantech advisor and investor

📍 United Kingdom🔄 Updated September 2026💼 12 investments📅 11 years investing🗓 Last invested Apr 2026
VC🌍 United KingdomInvested this year
12
Total investments
2
Early stage
3
Mid stage
3
Late stage
11y
Years active

Portfolio

10 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Apr 2026
QuberTech is transforming the natural rubber industry with innovative sustainable biotech solutions for a greener future
Investor / Advisor
Feb 2025
We are a new generation of geologists leading the energy revolution by locating the Earth’s naturally occurring hydrogen reservoirs. Using bottom-up exploration and decades of geology experience, we are on a mission to deliver natural hydrogen to the world. Check out this short video explainer for more details: https://vimeo.com/1116223132
Investor / Advisor
Dec 2023
phelas develops the solution for the energy transition: An electricity storage system that is modular, mass-produced, cost-effective and safe. We help utilities, grid operators, industry, renewable energy developer & operators to provide renewable energy 24/7
Investor
Apr 2023
Lytegro is a pioneering company at the forefront of sustainable innovation by revolutionising the utilisation of waste bananas. Our core technology, BacLyte, is a water-based extract of black banana pulp which has undergone clever filtration. BacLyte acts as a game-changing "steroid for microbes," accelerating the growth of bacteria, yeast, and fungi. We use BacLyte to create unique & potent microbial growth enhancer products for various industries - making their processes faster and more efficient, leading to increased product yields and improved throughput. Our products enhance profitability whilst making the process more sustainable; by improving process efficiency, users can use fewer resources to obtain more output, thereby reducing their feedstock, water and energy footprints. We specialise in producing products for distilling and bioenergy applications, specifically bioethanol production and anaerobic digestion (AD) for making biogas. Our distilling product has been rigorously tested by leading UK distillers, repeatedly demonstrating an impressive 10%-20% increase in alcohol yield and a reduction in process time of >40%. Environmental & social impact is central to our mission. Annually, a staggering 30 million tons of bananas are discarded into landfill, contributing to greenhouse gas emissions equivalent to 400 million tons of CO2. Farmers bear the burden of unsellable crops without receiving compensation. LyteGro aims to transform this situation by utilising waste banana feedstock and converting it into valuable products, simultaneously addressing environmental concerns and supporting farmers by paying for their otherwise discarded waste. Our overarching focus is accelerating the global transition to a sustainable and circular economy. By enabling end users to enhance the efficiency of their green chemistry and bio-based industrial processes with our products, we contribute to a more sustainable future. Help us change the world with banana smoothies!
Investor / Board Observer
Oct 2022
ZeroAvia's mission is a hydrogen-electric, zero-emission powertrain in every aircraft. From 19-seat regional trips to over 100-seat long-distance flights, ZeroAvia enables scalable, sustainable aviation by replacing conventional engines with hydrogen-electric powertrains. We are a team of passionate innovators dedicated to bringing safe, zero-emission flight to aviation, with locations in Kemble and London in the UK, and Hollister, California.
Investor
Aug 2022
Hycamite produces clean hydrogen and industrial-quality solid carbon by splitting methane using proprietary zero-emission technology. It is based on the thermo-catalytic decomposition (TCD) of methane molecules — in other words, we break the methane with our catalyst and heat. The novel methane pyrolysis technology requires only 13% of the energy needed to produce hydrogen using electrolysis. Hycamite’s technology enables the production of low-carbon or even carbon-negative hydrogen. Hydrogen can be produced from biomethane, methane from natural gas, or synthetic methane. As a cutting-edge carbon capture, utilisation and storage (CCUS) technology, Hycamite’s solution enables the creation of carbon sinks, providing clients with industrial-quality carbon fit for demanding applications, such as Li-ion batteries, composite materials and filter purifiers. Hycamite’s production is environmentally friendly. There are no emissions into the atmosphere and the catalysts used are sustainable. Hycamite is a privately owned company headquartered in Kokkola, Finland.
Investor
Jul 2022
H Quest Vanguard, Inc. is an early-stage technology company based in Pittsburgh, PA. H Quest Vanguard was established in 2014 and operates a facility at U-PARC (former Gulf Research Labs) campus in Harmar, Pennsylvania. H Quest is developing a low-temperature plasma conversion process to derive fuels, chemicals, and advanced carbon materials, including graphene and carbon fiber, from low-cost, abundant resources: natural gas and coal. This transformational process has no CO2 emissions and can be deployed at orders of magnitude lower costs than conventional chemical plants employing legacy technologies.
late stageOil and Gas
Investor
Jul 2021
Tevva is pioneering zero-emission transport with revolutionary battery-electric and hydrogen fuel-cell range extender technology. Tevva trucks optimise range, driver experience, and total ownership cost while significantly reducing the environmental impact from the urban freight and logistics sectors. Tevva trucks are as cost-effective and operationally flexible as diesel trucks. A Tevva truck has at least 1,000 fewer moving parts than a traditional diesel truck, lowering maintenance costs and increasing uptime. Combining realistic capital costs and reduced operating costs means that Tevva trucks achieve total cost of ownership (TCO) parity with an equivalent Euro 6 diesel truck. The capability to deploy on long routes every day means that Tevva trucks replace their traditional diesel counterparts. As a fully zero-emission truck with minimal moving parts, Tevva offers a step-change in fleet longevity and a radical reduction in lifetime cost per kilometre. Tevva trucks are smooth, responsive, and relaxing to drive. They are much quieter than traditional diesel trucks, allowing for greater flexibility where night-time deliveries in urban residential areas are concerned. The trucks simultaneously address the dual crises of climate change and urban air quality because they offer the lowest possible CO2 per km and eliminate 100% of tailpipe pollution (NOx, SOx, and particulates). Having Tevva BEVs and REX BEVs in your fleet makes environmental sense and, with long-term savings on maintenance and running costs, is a great business decision. Tevva is an expert in technology because it matters and makes a positive difference to humanity. Tevva trucks are already on the road and have accrued hundreds of thousands of miles in customers hands. All Tevva trucks are available in left and right-hand drive and subject to European Whole Vehicle Type Approval (ECWTA). Join us as we power the zero-emission revolution.
Investor
May 2021
HyPoint, Inc. is developing the next generation hydrogen fuel cell system with zero CO2 emissions and game-changing energy performance for the air transportation and urban air mobility market. Our solution increases operational time by 5X and utilization rate by 10X while decreasing TCO of any flying platform by 90%.
Investor / Advisory Board Member
Sep 2015
Virunga Power is a developer, investor, and operator of renewable power generation and distribution networks in East and Southern Africa. Its distributed portfolio of assets spans five countries and includes run-of-river hydropower plants in development, construction, operations, and electricity distribution networks that bring power to households and businesses in rural areas.
Experience · 17 entries
All (17)
Investments (12)
Board (1)
2026
Investor
Apr 2026
QuberTech is transforming the natural rubber industry with innovative sustainable biotech solutions for a greener future
2025
Investor / Advisor
Feb 2025
We are a new generation of geologists leading the energy revolution by locating the Earth’s naturally occurring hydrogen reservoirs. Using bottom-up exploration and decades of geology experience, we are on a mission to deliver natural hydrogen to the world. Check out this short video explainer for more details: https://vimeo.com/1116223132
2024
Investor
Jul 2024
Saoradh Enterprise Partners (SEP) is a cleantech venture capital and research firm based in Boulder, Colorado. SEP partners with innovators, entrepreneurs, and corporations to find solutions at the magical intersection of science (what’s possible), finance (what’s bankable), industry (what’s needed), and planet (what matters). Learn more at www.saoradh.com.
2023
Investor / Advisor
Dec 2023
phelas develops the solution for the energy transition: An electricity storage system that is modular, mass-produced, cost-effective and safe. We help utilities, grid operators, industry, renewable energy developer & operators to provide renewable energy 24/7
Investor
Apr 2023
Lytegro is a pioneering company at the forefront of sustainable innovation by revolutionising the utilisation of waste bananas. Our core technology, BacLyte, is a water-based extract of black banana pulp which has undergone clever filtration. BacLyte acts as a game-changing "steroid for microbes," accelerating the growth of bacteria, yeast, and fungi. We use BacLyte to create unique & potent microbial growth enhancer products for various industries - making their processes faster and more efficient, leading to increased product yields and improved throughput. Our products enhance profitability whilst making the process more sustainable; by improving process efficiency, users can use fewer resources to obtain more output, thereby reducing their feedstock, water and energy footprints. We specialise in producing products for distilling and bioenergy applications, specifically bioethanol production and anaerobic digestion (AD) for making biogas. Our distilling product has been rigorously tested by leading UK distillers, repeatedly demonstrating an impressive 10%-20% increase in alcohol yield and a reduction in process time of >40%. Environmental & social impact is central to our mission. Annually, a staggering 30 million tons of bananas are discarded into landfill, contributing to greenhouse gas emissions equivalent to 400 million tons of CO2. Farmers bear the burden of unsellable crops without receiving compensation. LyteGro aims to transform this situation by utilising waste banana feedstock and converting it into valuable products, simultaneously addressing environmental concerns and supporting farmers by paying for their otherwise discarded waste. Our overarching focus is accelerating the global transition to a sustainable and circular economy. By enabling end users to enhance the efficiency of their green chemistry and bio-based industrial processes with our products, we contribute to a more sustainable future. Help us change the world with banana smoothies!
Show all 17 entries ↓
Investment activity
2015–2026 · 12 investments
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