About XDI
Our goal is to accelerate action on climate change by embedding physical climate risk data in all decisions
As the physical climate risk experts, we’re here to help you - whether at the start of your journey, or advanced, we deliver actionable results.
We’re independent
XDI is part of The Climate Risk Group, a group of companies committed to quantifying and communicating the costs of climate change.
We’re serious about climate
Ours is a mission-driven company.
We exist to help our clients and community understand and manage unavoidable climate change, whilst demonstrating the imperative for a low carbon world.
We see every contract as a collaboration. We are trusted by governments, NGOs, companies, banks and communities - and while some see themselves in opposite corners - we believe it will take all actors working together to solve this challenge.
We’ve got heart
Data and information alone do not create change: data needs humanity and humanity needs ambition.
Our vision is not just to identify physical climate risks, but to also mitigate them.
Our goal is a more climate-resilient community.
Our approach is to work with you over the course of your climate risk journey.
Our clients are global
We analyse assets in over 175 countries
Adapt and thrive in a climate changing world
Our story
Climate Risk Pty Ltd is founded
Working with leading edge decision-makers and organisations, we developed systems to calculate the impact of climate change variables on physical assets, human resources and management processes.
XDI is incorporated
XDI (Cross Dependency Initiative) brings together the knowledge, the technology and the team to accelerate action on climate change by embedding climate impact data in all decisions.
Climate Valuation launched
XDI’s sister company, Climate Valuation is established, putting climate change impact information into the hands of homeowners and homebuyers.
The Climate Risk Group
The Climate Risk Group is formed bringing together XDI and Climate Valuation under one parent company, to quantify and communicate the costs of climate change.
Our founders, Rohan, Ruth and Karl
Passionate about shifting the dial on climate change, our founders from left-to-right:
Rohan Hamden, Ruth Tedder and Karl Mallon.
Global leaders in physical climate risk analysis since 2007
Backed by a team of specialists across science, engineering and software development, XDI provides best in class expertise in physical climate risk analysis to inform capital allocation, planning and risk management decisions.
Our work helps key decision makers understand the costs of unmitigated climate change at the asset, firm and investor scale.
Today, XDI is an international company with offices in Europe and Australia.
Meet our team
Dr Karl Mallon is the Co-founder and Director of Science and Technology at XDI (Cross Dependency Initiative). With a background in both Physics and Mechanical Engineering, Karl has worked in climate change mitigation, policy and technical analysis since 1991, and has specialised in climate adaptation since 2005. His team’s pioneering work in developing technology to quantify the cost of extreme weather to the built environment led to the development of the Climate Risk Engines in 2012. Karl is editor and co-author of ‘Renewable Energy Policy and Politics: A Handbook for Decision Making’ published by Earthscan (London) and a contributing author for ‘Practical Adaptation Studies’, published by Wiley. Karl is also a founding board member of The Climate Bonds Initiative (London).
Ruth co-founded Climate Risk with Dr. Karl Mallon in 2011 and has since led on the operations of Climate Risk including the Financial and HR strategy, and the subsequent growth ofTransition Institute Pty Ltd, the incorporated company behind Climate Valuation. Ruth has worked closely with XDI CEO, Rohan Hamden and Dr. Karl Mallon since 2016 to develop and implement business strategy whilst overseeing Operations, Finance and People. Since co-founding Climatica in 2022, Ruth has focussed on scaling Climatica for growth, including the recruitment of senior staff and establishment of systems to support the team’s effective delivery of strategic goals. With the evolution of the team Ruth has been able to focus on financial strategy in particular around business analytics for growth.
Miguel has worked across Australia and Europe to expand the reach of XDI data. Miguel has supported the integration of XDI data and models into decision making processes in financial institutions, regulators and government agencies. At XDI, Miguel has experience delivering multiple large scale deliveries, for example our Gross Domestic Climate Risk Report. and our Resilient Planet Finance Lab project in partnership with Climate Arc and University of Oxford. Miguel has closely managed XDIs relationship with big financial institutions and has supported various reporting requirements and regulatory stress testing globally. including HSBC since 2021. Miguel has a background in Mechanical Engineering and has a Bachelor of Engineering Honours.
Stella began her career working in technology implementation at Australia’s largest retail pension fund before transitioning into the sustainability sector. She has since worked on project delivery in both Australia and the UK, across public and private sectors. Stella brings experience in various aspects of sustainability, including physical and transitional climate risk and the circular economy. Stella holds a Bachelor of Science and a Master of Environment and Sustainability.
PhD Atmospheric Physics
Dr Gillian McCusker is a climate scientist and brings over 10 years of experience in academic research, B2B pre and post sales, and climate data analytics to the team. Upon completing her PhD in Atmospheric Physics in 2016, Gillian conducted some notable research on aerosol-cloud interactions across several polar field campaigns. She then went on to pursue her career in the climate tech and nature space, working with Cervest, Mitiga Solutions, and Global Canopy.s) in emerging economies.
PhD Business, BArt (Hons Creative Industries), BMus
With over 10 years of experience working in climate change research, and over 18 in production and project management, Dr Rebecca Cunningham leads complex and transformative projects in climate change adaptation, data analytics and visualisation, natural resource governance, network science, policy, and science communication.
BCMS (Hons), Data Analytics, Psychology
Data Analyst with experience working in data-intensive environments, building complex data processing pipelines, making sense of data using visualisation techniques, managing stakeholders, influencing decision makers and thinking critically about the development of statistical products.
M.Sc (Primatology), B.Sc (Biology)
Expert GIS specialist with experience working with large climate and ecological data sets. Delivering value and excellence to a variety of stakeholders.
Bachelor of Science (Geophysics).
Navin brings 3 years of climate data analytics to the team, including experience in acute and chronic hazard modelling, and the financial quantification of both acute and chronic physical climate risk for corporates and public sectors from his previous role at Willis Towers Watson.
Development Manager
Bachelor of Engineering,
Diploma in Data Science
Dan is passionate about applying statistical modelling and software engineering to solve meaningful problems. She brings +10 years of experience in driving product delivery and developing complex software systems in sectors including aerospace and energy.
Diploma in Science (General), Diploma in Graphic Design and Multimedia, Diploma of Marketing and Communications, Certificate in Climate Communication
We’re always looking for dedicated climate specialists
If you’re passionate about accelerating action on climate change, but don’t see a relevant open position, email us with some information about yourself
The XDI team, your physical climate risk experts
Our data has been tested by the demands of the global market since 2007
The Climate Risk Engines have driven innovation in defining, pricing and responding to physical climate risk.
The Climate Risk Engines extract dynamically downscaled global and regional climate change models and combine these with global and local data sets, applying bespoke probabilistic algorithms to produce decision-ready financial and risk metrics.
Results are expressed in a range of engineering or financial metrics to inform decision-making at all scales.
Since 2006, decision makers have come to our team to understand the physical impacts of climate change to their business operations.
Convert risk to opportunity
Global reach
XDI is an international, independent provider of physical risk analysis with an established network of clients and resellers.
Leading technology
XDI analysis is powered by the award-winning Climate Risk Engines, tried and tested in the market since 2007.
Standard reporting
XDI’s standard reports present physical risk data in different packages for different sectors or sections of an organisation. Pick from a list depending on your clients’ needs.
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Complex problem solving
Complex problems need clever solutions. XDI works closely with resellers to support bespoke solutions for your client.
As the physical risk climate experts,
we’re here to help you
Our technology: the Climate Risk Engines
The Climate Risk Engines were created in 2012.
Developed by scientists, engineers and climate risk experts, this was the first time the cost of physical climate risk had been quantified in this way.
Today, the Climate Risk Engines are one of the most flexible, powerful and trusted sources of physical climate risk data in the world.
The Climate Risk Engines use engineering-based methods to assess exposure and vulnerability of asset archetypes to understand the likely damage and failure probability of assets caused by extreme weather and climate change hazards.
The coverage is global, granular, sophisticated and under constant improvement.
Our hazards
The Climate Risk Group’s science team is continually adding new hazards to our analysis. We prioritise those that have the greatest impact on people, business and finance, and the widest application.
Coastal Inundation
Extreme Heat
Extreme Wind
Riverine Flooding
Forest Fire
Freeze-Thaw Cycle
Tropical Cyclone Wind
Landslide
Surface Water Flooding
Soil Movement
Tropical Cyclone Storm Surge
Our latest data release
At XDI, we believe that data needs to be in the hands of those who will use it to drive change, including citizens and civil society organisations. We release information publicly to generate debate and increase understanding.
2025 Global Data Centre Physical Climate Risk and Adaptation Report
PUBLIC DATA RELEASE
2025 Global Data Centre Physical Climate Risk and Adaptation Report
This report provides the most comprehensive picture yet of how climate hazards — from flooding and tropical cyclones to forest fires and soil movement — threaten the critical infrastructure that powers our digital economy. As demand for data centre capacity accelerates, understanding these risks is essential for building resilience into the backbone of modern life.
In a world first, this report will not only map physical risks but also quantify how structural adaptations can reduce damage, protect operations, and help rein in escalating insurance costs. This analysis demonstrates that strategic investments in resilience can significantly reduce risk exposure, even as climate hazards intensify. For asset owners, operators, and investors, the report offers clear insights to guide smarter decisions and safeguard long-term value.
See the full Gross Domestic Climate Risk ranking of 2,600+ territories
The XDI GDCR is the second release in the XDI Benchmark Series, ranking the physical climate risk to the built environment in all states and provinces around the world.
See the full 2,600+ territories below.
Statement on fossil fuels and weapons industry
XDI chooses not to provide services wholly directed towards enabling the expansion of fossil fuel production and use. Specifically, we will not provide physical risk analysis for new sites for coal mines, gas or oil fields or coal or gas-fired power plants. XDI recognises that many of our existing clients and resellers provide lending, consulting services or other support to the fossil fuel industry, including its expansion. XDI views our work as crucial to helping our clients understand the costs of catastrophic climate change and informing their business decisions and strategies such that they pursue pathways towards rapid decarbonisation and resilience. On a case by case basis, XDI may choose to add a company to the list of prohibited companies appended to this policy if XDI deems that company to be contributing to the expansion of the fossil fuel industry without appropriate plans to phase out these activities.
In view of the extensive and irreparable harm caused by the international weapons industry, XDI will not provide business services to companies that dominate this industry. XDI chooses not to provide services to companies, including their associated entities, whose business depends upon the continuation of war and conflict and the misery and environmental damage it inflicts. Specifically, XDI will not provide services to those among the 100 largest weapons manufacturers that derive 50% or more of their revenue from weapon sales. These companies will be those identified by the Stockholm International Peace Research Institute in 2021 or their associated entities.
News from XDI
Our latest updates
XDI Launches Major Upgrade to Climate Risk Hub: Setting a New Standard in Physical Climate Risk Analysis
Flooded Future: Europe's Rising Economic Risk
Europe’s economic hubs drowning in risk: XDI warns flood damage risk rising in Milan, Paris, Frankfurt and beyond
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