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BeZero hires new Chief Ratings Officer

  • Carbon ratings agency BeZero Carbon has appointed Teresa Hartmann as Chief Ratings Officer.

  • Formerly Director of Voluntary Carbon Market Formation at IETA, Teresa led the market formation function of the Integrity Council for Voluntary Carbon Markets (ICVCM) on scaling market transparency and integrity.

  • She brings a wealth of global carbon markets experience to the role, having worked at the World Economic Forum and the UN Environment Programme.

Carbon ratings agency BeZero Carbon has today announced Teresa Hartmann as its Chief Ratings Officer. Teresa has dedicated her career to funnelling finance into climate action, and will bring her wealth of experience working in policy and across NGOs to BeZero’s world-leading ratings team.

Teresa began her career in a boots-on-the-ground role in Kakum National Park in Ghana - which is now a forest carbon project. She realised that in order to truly protect the forest and deliver genuine climate impact, a career scaling markets and developing policy was essential -and transitioned to a role at UNHQ and later the UN Environment Programme (UNEP)

Since then Teresa has operated at the forefront of carbon market development, leading the Natural Climate Solutions Alliance at the World Economic Forum (WEF) and building their carbon market portfolios, before moving on to act as Director of Voluntary Carbon Market Formation at IETA. Here, she worked on the Integrity Council for Voluntary Carbon Markets, helping develop the Core Carbon Principles to set a bar for standards and integrity across the market.

Teresa holds a B.Sc. in Environmental and Resource Management and a Master’s degree in International Studies with a focus on the Middle East and North Africa, and also completed the WEF’s Global Leadership Fellowship Programme.

She was the lead author of the WEF’s Nature and Net Zero report, and an author of the State of Finance for Nature report produced by the UNEP, WEF, and the Economics of Land Degradation Initiative.


Teresa Hartmann, Chief Ratings Officer at BeZero Carbon, said:

“I am thrilled to be joining BeZero Carbon at this crucial time in the development of carbon markets around the world. Carbon credits are an integral tool to achieve global climate targets, and the project-level assessments that BeZero Carbon provides could not be more important to help this market scale into a force for environmental impact. I’m delighted to be bringing my experience to this outstanding team.”


Tommy Ricketts, CEO and co-founder of BeZero Carbon:

“We could not be more excited to have Teresa join the team to take our global ratings into a new era. Her work marries policy, strategy and technical expertise to help position us in a rapidly evolving market. We look forward to learning from her experiences, including as a leader at the IC-VCM, to continue to deliver our world-leading ratings, which are essential for this burgeoning market to flourish.”