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Engaged Tracking (ET) Index Ltd (trading as 'Engaged Tracking') ©2019. Company registration number: 08876852.

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There has been a clear social, economic and political shift in the last two years, but what has been more evident since the start of 2019 is the exponential shift in attitudes towards the issue of climate change. Bank of England Governor, Mark Carney, has been emphatic in his calls to the financial system to take immediate action in mitigating the existential risk of climate change. However, there is an acknowledgement across the financial industry of data quality gaps, making climate risk assessments complex.

Engaged Tracking’s Emissions Transparency Index is designed to redress such drawbacks by providing the financial industry with transparent, independent and inclusive data on company greenhouse gas emissions. Having a fully transparent data set is unique in an industry with many proprietary models.


The Index is intended to prevent greenwashing of any form by promoting accountability and penalising non-disclosure. Engaged Tracking engages with all companies from which data is collected, to improve and to promote best practice emissions disclosure. In order to improve their weighting, companies must consistently reduce emissions and improve the breadth of disclosure across Scope 1, 2 & 3 emissions.


Engaged Tracking is completely independent. The singular focus on climate mitigates the possibility of convoluting the broader ESG risks and ratings currently in existence, which increase the likelihood of underpricing climate risk due to the number of variables across the ESG paradigm.

We publicly index the world’s largest listed companies according to their Scope 1, 2 and 3 greenhouse gas emissions each year. Our public Emissions Transparency Index rewards carbon efficiency and penalises non-disclosure. The Index provides a data-driven corporate engagement platform to enable investors to track corporate carbon disclosure and performance across their investments in a transparent way.

This is an ‘engaged’ approach to index investing, whereby there is a clear and transparent link between a company’s climate performance and its weighting in an index.


Companies may improve their weighting in the Emissions Transparency Index by publicly disclosing third-party assured and Scope 1, 2 and 3 emissions for their worldwide operations, in accordance with the Greenhouse Gas Protocol.


  • Values for Scope 1, 2 and 3 emissions should be expressed in metric tonnes of carbon dioxide equivalent (tCO2e).

  • Companies should refer to the Greenhouse Gas Protocol Corporate Standard (Scope 1 and 2) and the Corporate Value Chain (Scope 3) Standard for further guidance.

  • Companies should ensure that external assurance is carried out by an independent third-party using one of the assurance standards accepted by Engaged Tracking. A full list of accepted assurance standards is available here. Assurance statements should be publicly disclosed.