01Emissions Reports (AI & Web)
Measure and report
web, cloud and AI emissions.
Wherever you host, understand the impact of your digital services with evidence-led sustainability reports from the team helping define global standards.
World leading digital emissions measurement acrossweb, cloud and AI
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.
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 co-chair the assembly writing the latest industry standards on digital emissions measurement. That work, alongside our published research, underpins the evidence in our reports and the measurement built into our cloud platform.
Software Carbon Intensity
ISO/IEC 21031:2024
Our founders contribute to the Green Software Foundation's SCI for Web work, building on the Software Carbon Intensity methodology defined in ISO/IEC 21031:2024.
View the standardWeb Standards
W3C Invited Experts
Our founders contribute as W3C Invited Experts to the Web Sustainability Guidelines, helping shape practical guidance for a more sustainable web.
Read the guidelinesResearch
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 researchUK Government
GDSA working group
We participate in the UK government's Government Digital Sustainability Alliance working group, contributing to the work embedding digital sustainability across government.
Government Digital Sustainability AllianceGet in touch
Let's talk about your digital emissions.
Tell us what you're looking to understand or improve, and we'll be in touch.