CEDA and Watershed
CEDA and Watershed

The most reliable emissions data for global companies

CEDA sets a new standard for Scope 3 carbon emissions data so you can power your sustainability programs with the most comprehensive and up-to-date spend-based data.

CEDA by Watershed

Watershed’s Comprehensive Environmental Data Archive (CEDA) is built by leading sustainability scientists for real-world application.

  • Globally representative, capturing true emissions variation across 148 countries and regions
  • Focus on what matters with the highest level of industry granularity available on a spend-based database (60,000 emission factors)
  • Reflect global decarbonisation progress in your footprint with annual updates
  • Enterprise-ready and designed for the specific needs of complex and highly scrutinized businesses
  • GHG protocol compliant and used by the world’s leading organizations

Various countries emissions numbers over map

One leading database. Two options.

Open CEDA

Recommended for organisations or companies measuring for the first time.

  • 60,000 emission factors
  • 400 industries
  • 149 countries
  • Updated annually

CEDA

Recommended for more advanced sustainability programs and service providers. Includes everything in Open CEDA, plus:

  • Pre-adjusted emission factors that account for price index adjustments, currency exchanges and producer to purchaser price conversions.
  • Breakdown by scopes 1, 2, 3
  • Breakdown by type of GHG
  • Breakdown by FLAG and Non-FLAG emissions
  • 150 additional agricultural commodities in kgCO2e/kg product
  • Contribution analysis file to understand emission factor differences
  • Cross-industry classification mapping file
  • Support and services

Request CEDA now

Using the form below, choose whether you'd like us to email you a download link for the free version (Open CEDA), or if you'd like to enquire about purchasing a version of CEDA with additional data breakdowns and support. Please note: Open CEDA is offered for free under CC BY-SA license.

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The team behind CEDA

CEDA began in 2001 at Leiden University, where Dr. Sangwon Suh developed the world's first environmentally extended input-output (EEIO) model. Dr. Sangwon Suh has spent more than 20 years building the foundations of global carbon data—as an architect of the GHG Protocol, IPCC author, and founder of VitalMetrics (acquired by Watershed). Today, CEDA is developed and maintained by Dr. Sangwon Suh, Dr. Mo Li who was a lead developer of the US EPA’s USEEIO model, and the climate and data science team at Watershed.

CEDA for researchers and academia

Watershed welcomes research and collaboration based on CEDA. The ultimate goal is to advance the climate data ecosystem and accelerate decarbonization. CEDA has been used over the last 20 years by academics, researchers and non profit institutions around the world. We are actively developing an academic version of CEDA. If you are interested in accessing CEDA for academic or research purposes and need access to more information about our models please reach out.

Email us to learn more
CEDA research partners

CEDA FAQs

Every annual CEDA version update integrates 2 types of changes:

  1. Data changes: meant to capture the most recent and highest quality data available globally and across industries in order to keep track of important economic and emissions changes in the world.
  2. Methodology improvements: meant to increase the robustness of the CEDA model and improve in sectors or regions that are most complex to estimate.

These changes are clearly identified and communicated to CEDA users with every release through our change log.

For additional questions, please refer to our methodology documentation.