We are delighted to announce that O-Hx, pioneers of next-generation thermal energy storage, will be speaking at the Sustainable Startup Investment Summit on 1st October 2025, hosted by Sustainable Times and headline sponsored by Sustainable Wealth Group.
Location: Plaisterers' Hall, One London Wall, London EC2Y 5JU
Time: 6:00 PM – 9:00 PM
This exclusive, investor-only event brings together visionary entrepreneurs and impact-driven investors for an evening of pitches, panels, and networking. Following the success of the EIS Investment Forum earlier this year, which welcomed over 300 investors, the Summit promises to be an equally powerful opportunity to connect with the next generation of sustainable ventures.
Why O-Hx stands out
Cooling is one of the least talked-about but most important parts of modern life - from food production to pharmaceuticals and even data centres. Yet today's systems are expensive, wasteful, and often carbon-intensive.
O-Hx is transforming this space with its flagship technology, the EnergiVault: a modular, plug-and-play thermal battery that stores and rapidly releases cooling power on demand. In simple terms, it helps businesses "stock up" on cheap, low-carbon energy at times when it's plentiful (such as overnight or when renewable power is flowing), and then use it later when demand and prices are higher.
The results are impressive:
Lower energy bills - businesses can avoid peak-time costs.
Lower emissions - every unit installed cuts around 117 tonnes of CO₂ per year.
Fast payback - companies typically recover their investment in under two years.
Already live at facilities such as a vertical farming site in Dundee and a pharmaceutical plant in Northumberland, O-Hx is proving its impact in real-world conditions. Each unit can reduce 117 tonnes of CO₂ annually, with a payback period of under two years, a compelling case for adoption in industries where energy resilience and cost savings are critical.
Big Vision, Big Market
With the global chilled water market valued at $600 billion annually, O-Hx is positioned for rapid international growth. The company holds a robust patent portfolio, has a strong sales pipeline, and is in discussions with strategic partners across the UK, US, and Europe.
Executive Chairman Bob Long sums it up well:
"We're a small company with an absolutely Goliath product. Within four years, we expect to be manufacturing on every continent."
For investors, O-Hx offers a rare opportunity: a proven technology, a massive market, and a solution that directly helps the world move towards net zero - a proposition firmly aligned with the goals of Sustainable Wealth Group and our investor community.
Sustainable Wealth Group is proud to be the headline sponsor of this event and is currently supporting O-Hx in its fundraising journey. If you would like further information, book a call with one of our Portfolio Managers here.
About the Sustainable Startup Investment Summit
The Summit offers investors an unparalleled chance to:
Hear direct pitches from four pioneering sustainable startups.
Join expert panels exploring the future of sustainability and impact investing.
Network with fellow high-net-worth individuals, angel investors, family offices, and venture capitalists committed to driving meaningful change.
This is an investor-only event, designed to highlight high-potential ventures raising funds and scaling solutions that accelerate the transition to a sustainable future.
Join Us
Secure your place at the Sustainable Startup Investment Summit and be part of shaping the future of sustainable innovation. Register to attend using the link below.
We look forward to welcoming you on 1st October at Plaisterers' Hall for an evening of inspiration, investment opportunities, and impact.
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