NTT DATA Business Solutions

NTT DATA’s C-Turtle™: Enhancing GHG Emissions Management with CDP

NTT DATA, a global digital business and IT services leader, became the first Japanese company to sign a license agreement with CDP (Note 1), to use CDP’s global database of the companies’ GHG (Greenhouse gas) emissions for their platform: “C-Turtle™”. This agreement makes NTT DATA’s “C-Turtle™” the first case in Japan to incorporate processed data from CDP in its system.

By using this service, companies will be able to use the “Company-wide Emission Allocation Method”, a way to calculate their emissions while reflecting the impact of reductions of their suppliers, thereby promoting reduction throughout the entire supply chain.

NTT DATA will continue providing consulting and solutions that lead to GHG reductions, to achieve a sustainable society.


Companies can use two types of calculation method to measure their amount of GHG emissions. The method generally used is to multiply “activity data (amount or value of purchased products)” by “emission intensity (industrial average amount of GHG being released for specific products) (Note 2)”. However, the drawback of this method is that it poorly reflects suppliers’ emission reduction efforts on their own indirect emissions (Scope 3 Category 1 and 2 (Note 3)). Instead of this, the “Company-wide Emission Allocation Method” can be used, which multiplies “activity data (transaction value with supplier A)” by “supplier-specific intensity (volume of emissions per entire sales of supplier A)”.

NTT DATA has been providing their “C-Turtle TM” calculation platform, which is compatible with this “Company-wide Emission Allocation Method,” since February 2022. The data collected by NTT DATA and the data held by CDP can now be combined within the “C-Turtle™”, thus the supplier-specific intensity will be expanded further. This will enable companies to efficiently calculate emissions based on the “Company-wide Emission Allocation Method”.

Overview of the “C-Turtle™” GHG Emissions Visualization Platform

“C-Turtle™”, is a GHG emissions visualization platform (Note 4) that supports all GHG Protocols (Note 5) Scope 1, 2, and 3. It also promotes corporate disclosure in line with recommendations from TCFD (Task Force on Climate-related Financial Disclosures) (Note 6) and applies the “Company-wide Emission Allocation Method”, a calculation method that considers reduction actions of the entire value chain, rather than simply calculating one’s own emissions. Specifically, we support the adoption of the “Company-wide Emission Allocation Method” in “Category 1: Products and services purchased from suppliers” and “Category 2: Capital goods” of Scope 3.

About CDP

CDP, an authoritative international NGO in the area of climate change, collects environmental information from companies and municipalities around the world. The information they disclose sets the global standard for environmental information disclosure.

As the only premium member of the CDP Supply Chain in Japan since 2022 and the CDP Gold Partner (Note 7), NTT DATA has been considering ways to contribute to CDP’s initiative to visualize and reduce GHG emissions throughout the supply chain. In the course of these discussions, NTT DATA and CDP signed a license agreement based on the shared goal of utilizing NTT DATA’s expertise in the area of system development to improve the efficiency of emissions calculations.


We are delighted to partner with NTT DATA, an organization demonstrating not only IT and digital business leadership but environmental leadership, too. C-Turtle is a product of this collaboration and our shared mission to unlock the power of the supply chain through the CDP Supply Chain program. We look forward to continuing our work with NTT DATA, supporting companies to engage their entire value chains to disclose their environmental impacts and, in turn, achieve net-zero.

About the name “C-Turtle™”

The “C” in “C-Turtle™” is inspired by the initial letters of Carbon Neutral and Climate Change. Although it is a platform for measuring GHG emissions, that is not the only goal. A sea turtle has been chosen as a symbol to represent the impact of climate change on ecosystems and the rise of sea level due to the rising temperatures, all consequences of climate change.

About the future

By providing emissions visualization services that incorporate CDP’s processed information, NTT DATA will engage with companies to promote the calculation of their emissions, including those who lack experience. Through this service, NTT DATA will promote the visualization of the entire supply chain and contribute to the expansion of environmental information disclosure to CDP, including the CDP Supply Chain.

NTT DATA will continue to strengthen and expand its services to tackle climate change and work on sustainability. By providing solutions and consulting that lead to GHG reduction, NTT DATA will contribute to achieving carbon neutrality for the society as a whole.

NTT Green Innovation toward 2040

NTT Group has set a drastic environmental goal: “NTT Green Innovation toward 2040” on September 28, 2021, aiming to reduce GHG emissions by 80% by FY2030 (mobile and data centers being carbon neutral) and also to achieve carbon neutrality by FY2040. NTT Group will expand its carbon neutral efforts to the society and meet the Japanese government’s goal of a 46% reduction in GHG emissions by 2030 compared to 2013, as well as achieving carbon neutrality by 2050.


  1. CDP is a non-governmental organization (NGO) managed by a British charity that operates a global disclosure system to help investors, corporations, nations, regions, and cities manage their environmental impacts.
  2. Emission intensity refers to the certain amount of emission relative to the intensity of a specific activity, or an industrial production process.
  3. Scope 1 refers to direct emissions, Scope 2 refers to indirect emissions associated with electricity, heat, and steam use, and Scope 3 refers to other indirect emissions. Among them, Scope 3 Category 1 refers to purchased product services and Category 2 refers to emissions related to capital goods.
  4. Launch of GHG Emissions Visualization Platform
  5. The GHG Protocol is an international standard for calculating and reporting GHG emissions.
  6. The TCFD was established with Michael Bloomberg as chair to examine how climate-related disclosures and financial institutions should be addressed.
  7. Our one-stop support for TCFD, disclosure compliance from consulting to system development:
  8. NTT DATA was the first Japanese company to be certified as a CDP Gold Certified Partner.

* “ C-Turtle™” is a registered trademark of NTT DATA Corporation in Japan.

*Other product names, company names, and organization names are trademarks or registered trademarks of their respective companies.


NTT DATA – a part of NTT Group – is a trusted global innovator of IT and business services headquartered in Tokyo. We help clients transform through consulting, industry solutions, business process services, IT modernization and managed services. NTT DATA enables clients, as well as society, to move confidently into the digital future. We are committed to our clients’ long-term success and combine global reach with local client attention to serve them in over 50 countries. Visit us at

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