We measure digital emissionsfor purpose-led orgs

Bring your web, cloud and AI impacts in line with your sustainability goals. With evidence-led reporting and low-carbon hosting.

How we can help Get in touch

How We Help

Want to understand and improve your digital emissions?

Whether you have a single website, a whole web estate or cloud services, or want to understand your AI usage, we help in two ways.

01Measurement

Measure and report
web, cloud and AI emissions.

Understand the impact of your digital services with evidence-led sustainability reports from the team helping define global standards.

02Cloud & Web Hosting

Host sustainable websites
and cloud apps.

A fully-fledged PaaS platform for modern developer workflows, with native energy and emissions measurement to track improvement over time.

Why Root & Branch

Science & StandardsBuilt into everything we do.

Our founders contribute to the latest industry standards and guidelines for digital sustainability and web emissions measurement. That work, alongside our research and methodologies, underpins the evidence in our reports and the measurement built into our cloud platform.

Software Carbon Intensity

ISO/IEC 21031:2024

We co-chair the ISO standard assembly work at the Green Software Foundation, defining the spec and guidelines for the Software Carbon Intensity (SCI) for Web standard (ISO/IEC 21031:2024).

View the standard

Web Standards

W3C Invited Experts

We are W3C Invited Experts on the Web Sustainability Guidelines, which give practical guidance on reducing the environmental impact of websites.

Read the guidelines

Research

Open methodologies

We began with Innovate UK-funded research into the energy use of software processes. Our measurement methodologies are published openly, so you can examine the evidence and check our working.

Explore the research

UK Government

GDSA working group

We are a member of the UK's Government Digital Sustainability Alliance (GDSA), contributing to the working group embedding digital sustainability across government.

Let's talk about your digital emissions.

Tell us what you're looking to understand or improve, and we'll be in touch.