British sustainability tracker 51toCarbonZero secures £3M to help corporates decarbonise

51toCarbonZero, a London-based climatetech focused on enabling corporate transitions to net zero, has raised a £3M investment round led by Fuel Ventures, with additional participation from angel investors.

This will support the company’s global expansion – particularly into Europe and the US – and bolster development of its AI-driven emissions management platform.

The round follows a previous investment by Fuel Ventures. 51toCarbonZero has gained traction in sectors such as advertising, media, sports, food and beverage, automotive, logistics, and financial services, where emissions transparency and sustainability reporting are becoming both regulatory and reputational imperatives.

“Our continued investment in 51toCarbonZero underscores our confidence in their mission and the impressive progress they’ve made since our previous investment,” said Mark Pearson, Founder of Fuel Ventures. “The 51toCarbonZero team has developed a platform that not only addresses the urgent need for emissions management but also empowers companies to take actionable steps towards sustainability. We’re excited to support their expansion into new markets and industries.”

Founded with the aim of simplifying emissions measurement and reduction, 51toCarbonZero offers a SaaS platform that aggregates carbon data across an enterprise and translates it into real-time insights. 

According to the company, it aims to help organisations reduce a cumulative 500 million tonnes of CO₂ equivalent, a bold target that reflects growing corporate interest in measurable climate action amid tightening ESG regulations.

“This investment marks a pivotal moment for 51toCarbonZero,” said Prof. Neil Woodcock, Co-Founder and Executive Chairman. “With Fuel Ventures’ continued support, we’re poised to extend our reach and enhance our platform’s capabilities, particularly through AI integration. Our mission is to simplify the path to net-zero for companies worldwide so we can help reduce emissions by 500m tonnes CO₂e, and this funding brings us closer to achieving that.”

The climatetech space continues to mature, driven by a combination of regulatory pressure (such as the EU’s Corporate Sustainability Reporting Directive), investor interest in ESG compliance, and rising demand from brands for better emissions accounting tools.

The new investment will go toward scaling the company’s operations, improving its AI capabilities, and expanding its client base across key global markets.