NTT West Introduces Off-Site PPA to Headquarters Buildings

NTT West Corporation (Headquarters: Osaka City, Osaka Prefecture; President and Representative Director: Ryota Kitamura; hereinafter "NTT West") announces that, as a symbolic initiative of its sustainability management, it will introduce an off-site corporate PPA*1 (hereinafter "off-site PPA") for long-term procurement of renewable energy at its headquarters buildings, in collaboration with NTT Anode Energy Corporation (Headquarters: Minato-ku, Tokyo; President and Representative Director: Teruyuki Kishimoto; hereinafter "NTT Anode Energy"), starting from Wednesday, April 1, 2026.

Through this initiative, the power used at the headquarters buildings will become virtually 100% renewable by utilizing electricity derived from renewable energy via the off-site PPA*2 and leveraging non-fossil certificates designated for renewable energy*3. By doing so, the company aims to achieve both the realization of a decarbonized society and sustainable business growth through the reduction of greenhouse gas emissions.

1. Background and Purpose Towards the realization of carbon neutrality by FY2040, as set forth in the NTT Group's new environmental energy vision "NTT Green Innovation toward 2040," NTT West has been considering reductions in greenhouse gas emissions from its own business activities by introducing renewable energy and other measures.

Now, in collaboration with NTT Anode Energy, NTT West will begin introducing an off-site PPA for the long-term procurement of renewable energy to four NTT West headquarters buildings (Location: Miyakojima-ku, Osaka City, Osaka Prefecture), and will use renewable energy-derived electricity at these headquarters buildings starting Wednesday, April 1, 2026.

As a result, approximately 7 million kWh*4 per year will be replaced with renewable energy-derived electricity, which is expected to reduce greenhouse gas emissions by approximately 3,000 tons*5 annually.

2. Overview of the Initiative A Corporate PPA (Power Purchase Agreement) is a contract in which a consumer purchases renewable energy-derived electricity from a power generator over the long term via a retail electricity provider. An off-site PPA is a model in which electricity is transmitted from a remote power generation facility to the consumer (in this case, the headquarters buildings) via the transmission and distribution network. In this off-site PPA, NTT Anode Energy mitigates risks such as disasters by distributing the developed solar power plants across multiple locations.

<Off-site PPA Scheme Diagram>

(1) Implementation Start Date: Wednesday, April 1, 2026

(2) Implementation Location: Miyakojima-ku, Osaka City, Osaka Prefecture 4 NTT West Headquarters Buildings (NTTWEST i-CAMPUS Building A, Building B, QUINTBRIDGE, PRISM)

3. Future Developments The NTT West Group positions the realization of carbon neutrality by FY2040 as a critical issue. Starting with the introduction of the off-site PPA at the headquarters buildings this time, we will proceed with expanding the introduction of renewable energy to other locations and creating decarbonization solutions in collaboration with local communities and customers.

In addition, NTT Anode Energy will work on the advanced introduction and use of renewable energy, strive to meet the needs of society and consumers, and contribute to the realization of carbon neutrality for society as a whole.

*1 A Corporate PPA (Power Purchase Agreement) is a contract in which a consumer purchases renewable electricity from a power generator over the medium to long term. Off-site PPA stands for off-site corporate PPA, which is a model where power is transmitted from remote generation facilities to the consumer (in this case, four NTT West headquarters buildings) via the transmission and distribution network of a general transmission and distribution business operator. Electricity from the solar power plants is supplied to the target facilities utilizing the off-site PPA scheme, and any shortfall in electricity from the solar power plants is supplied by power from the wholesale electricity exchange, etc., as supplementary power.

*2 This power supply will be conducted by ENNET Corporation (Retail Electricity Provider Registration Number: A0009) of the NTT Anode Energy Group, and NTT Anode Energy will provide the service as an agency. By procuring power in combination with non-fossil certificates designated for renewable energy, virtually 100% renewable energy is achieved. Specifically, electricity from solar power plants is supplied to target buildings using off-site PPAs, and any shortfall is covered by electricity from wholesale power exchanges as supplementary power. Non-fossil certificates designated for renewable energy will be attached to the power from both the solar power plants and the wholesale power exchange.

*3 Non-fossil certificates prove the environmental value (non-fossil value) of electricity generated by "non-fossil power sources" that do not use fossil fuels such as oil or coal. By providing electricity in combination with non-fossil certificates designated for renewable energy, it becomes possible to use electricity with a virtually 100% renewable energy ratio.

*4 This is an estimated value based on the actual electricity usage results of the four NTT West headquarters buildings in FY2024.

*5 This calculation is a reference value based on Scope 2 calculations, applying the Kansai Electric Power Company's emission factor for reporting in FY2026 (0.000415 t-CO2/kWh).

*The information contained in news releases is current as of the date of the announcement. Please note and be aware in advance that this information is subject to change.