Green Carbon,inc. (Representative Director: Jun Okita, hereinafter “Green Carbon”), which develops a nature-based carbon credit generation and sales business, entered into a capital and business alliance agreement (hereinafter “the Agreement”) on the 17th with NTT DOCOMO Business, Inc. (formerly NTT Communications Corporation, President: Katsushige Kojima, hereinafter “NTT DOCOMO Business”). Today, Green Carbon completed a third-party allotment of shares with NTT DOCOMO Business as the subscriber. Through this alliance, Green Carbon and NTT DOCOMO Business will contribute to the realization of a carbon-neutral society.
◆ Background and Purpose
As the importance of global climate change measures continues to rise, green transformation (GX) aimed at achieving a decarbonized society has become an essential initiative for both companies and society. However, due to technological and cost constraints, it is difficult for companies to reduce all greenhouse gas (GHG(※1)) emissions to zero through their own efforts alone. As a means to compensate for this challenge, the mechanism of carbon credits (※2) has been increasingly gaining attention. By utilizing this mechanism, companies can offset emissions that cannot be reduced internally with reductions or removals achieved by other projects, enabling them to pursue carbon neutrality.
NTT DOCOMO Business is working to establish a sustainable agricultural model that balances reduced environmental impact with improved earnings for producers, through the creation of carbon credits and farming support in Japan—centered on rice paddies—under the initiative “Green Natural Credit”(※3). In addition, the company comprehensively supports corporate GX efforts by leveraging a wide range of GX solutions, including visualization of GHG emissions via the emission-tracking service CO2MOS®(※4), low-carbon ICT infrastructure through the ultra-energy-efficient data center service Green Nexcenter®, and promotion of carbon credit distribution through the credit trading platform Morikachi(※5).
Green Carbon focuses on generating nature-based carbon credits primarily in Southeast Asia and is involved in a wide range of projects, including forest conservation, rice paddies, mangrove planting, methane reduction from livestock, and biochar initiatives.
By combining NTT DOCOMO Business’s communication and digital infrastructure-based GX solutions with Green Carbon’s expertise and know-how in carbon credit generation, the two companies will strongly support corporate GX initiatives and contribute to the realization of a carbon-neutral society.
◆ Overview of the Alliance
NTT DOCOMO Business and Green Carbon have until now collaborated in the generation and sales of nature-based carbon credits within Japan. Through this alliance, the scope of collaboration will expand to include the creation of carbon credits overseas utilizing the Joint Crediting Mechanism (JCM(※6)), thereby further accelerating corporate GX initiatives.
The specific initiatives are as follows:
(1)Strengthening the distribution of carbon credits in Japan through the use of JCM
By leveraging the JCM, carbon credits generated from overseas rice paddy projects—primarily in Southeast Asia—will be supplied to Japanese companies, while simultaneously promoting local agricultural improvement (※7) and decarbonization support in the project regions.
(2)Collaboration on the sales of GX solutions by NTT DOCOMO Business
J-Credits generated domestically by Green Carbon, as well as JCM credits jointly generated by both companies using the JCM framework, will be incorporated into NTT DOCOMO Business’s GX solutions lineup. This will comprehensively support corporate decarbonization efforts and accelerate sales activities. In the future, by working with carbon credit trading platforms and expanding the types of credits handled, the companies aim to provide a system that enables more businesses to easily participate in transactions. Initiatives such as improving efficiency in measuring CO₂ emissions and absorption using IoT sensors will also be considered.。
◆ Comments from Each Company
<NTT DOCOMO Business, Inc.>
Katsunori Yamashita
Executive Officer, Head of Business Solutions Division, General Manager of Solution Services Department
Efforts by companies to achieve decarbonization have now become a critical management priority. Through this alliance, we will further strengthen our framework for comprehensively supporting corporate decarbonization by combining NTT DOCOMO Business’s advanced communication and digital infrastructure with Green Carbon’s expertise.
We aim to contribute to accelerating our customers’ decarbonization management and maximizing environmental value. By working closely with our customers to solve their challenges, we will contribute to the sustainable development of local communities and build a better future together.
<Green Carbon,inc.>
Jun Okita, Representative Director & CEO
Green Carbon has been advancing credit generation both in Japan and overseas. Through this capital and business alliance, we believe that by combining the project development expertise in natural capital that we have cultivated with NTT DOCOMO Business’s ICT and digital technologies, we can further expand the value we provide in GX support.
Nature-based credits create multifaceted value—not only reducing emissions, but also driving agricultural improvement and regional circularity. This collaboration will enhance that value both domestically and internationally, evolving it into a mechanism from which companies, local communities, and nature can all benefit. Guided by our vision, “Saving the planet through the power of life,” we will accelerate our challenge of connecting nature and technology and promote cross-border implementation of decarbonization. We have high expectations for working together with NTT DOCOMO Business to pioneer a new future for GX.
※1 :*1 GHG (Greenhouse Gas)
Refers to gases that contribute to the greenhouse effect.
※2 Carbon Credit
A quantified and tradable unit representing the reduction or removal of greenhouse gas emissions (such as CO₂). The certification system operated by the Japanese government is known as J-Credit.
※3 Green Natural Credit
A business model provided by NTT DOCOMO Business that supports the generation and sales of J-Credits in the agricultural sector.
※4 CO2MOS®
A service from NTT DOCOMO Business equipped with the necessary functions for calculating GHG emissions.
※5 Morikachi (Forest Value Creation Platform)
A platform that comprehensively supports the generation, verification, and trading of forest-derived J-Credits.
※6 JCM (Joint Crediting Mechanism)
A bilateral crediting system in which Japan collaborates with developing countries by providing decarbonization technologies and financing, and both countries share the resulting emission reductions.
※7 Agricultural Improvement
An initiative to enhance the efficiency and sustainability of agricultural operations and production activities through improvements in technology, management, and environmental practices—such as the introduction of smart agriculture technologies.
◆ NTT DOCOMO Business, Inc.
Representative: Katsushige Kojima, President & CEO
Head Office:Otemachi Place West Tower, 2-3-1 Otemachi, Chiyoda-ku, Tokyo
Established: July 1999
Business Activities: NTT DOCOMO Business, which is responsible for comprehensive ICT services for corporate clients, serves as a “platformer for industrial and regional DX” that supports an autonomous, decentralized, and collaborative society where companies and communities can grow sustainably. Under the slogan “Connecting people. Connecting communities. Connecting new opportunities that bring joy.”, the company aims to create new value and contribute to a more prosperous society by connecting people, communities, and various businesses.
Website: https://www.ntt.com/
◆ Green Carbon Inc.
Representative: Jun Okita, CEO
Head Office: PREX North 9F, 2-3-2 Kojimachi, Chiyoda-ku, Tokyo, Japan
Established: December 2019
Business Activities: Development and sales of carbon credits, agriculture-related projects, environmental projects, other related businesses, and ESG consulting
Website: https://green-carbon.co.jp/en/
◆About Green Carbon
Guided by the vision of “Harnessing the power of life to save the Earth,” Green Carbon develops and supports projects that generate, register, and sell nature-based carbon credits both in Japan and abroad. The company is also engaged in agriculture-related businesses, R&D initiatives, and ESG consulting. Its business activities span Japan, Southeast Asia, Australia, and South America, creating credits from rice paddies, biochar, forest conservation, carbon farming, mangrove planting, and cattle methane reduction. In Japan, Green Carbon obtained certification in FY2023 for the country’s first and one of the largest-scale rice paddy J-Credit projects (approx. 6,220 t). In FY2024, the company plans to expand this initiative to around 40,000 ha (approx. 80,000 t). Green Carbon also provides “Agreen,” a one-stop platform service that streamlines the entire process of credit registration, application, and sales. By simplifying procedures and documentation, the service reduces the administrative burden on credit creators.

