Advantages of
Corporate PPAs
Long-term stable procurement of electricity and environmental value
One of the key advantages of corporate PPAs is that they ensure a stable, long-term supply of renewable energy. By reducing exposure to market price fluctuations, they make energy costs more predictable. This enables companies to formulate their business plans with greater confidence while reducing risks associated with energy procurement.
Contribution to decarbonization-driven management and enterprise value enhancement
The introduction of renewable energy is a concrete step toward achieving carbon neutrality. Environmentally responsible power procurement can enhance a company’s reputation among stakeholders, including investors, business partners, and local communities. Corporate PPAs also serve as an important strategic initiative for enhancing enterprise value.
The power supplied through the Cosmo Energy Group’s corporate PPAs is generated from renewable energy sources. Long-term procurement of renewable energy also contributes to protecting the global environment and advancing the transition to net zero carbon emissions. Cosmo Eco Power Co., Ltd. (hereafter, “Cosmo Eco Power”), responsible for the Group’s Renewable Energy Business, supplies renewable energy generated at its wind power plants under long-term corporate PPAs.
Types of Corporate PPAs
Physical PPAs
A physical PPA is a contract in which electricity and its associated environmental value are delivered from a specific power plant to the consumer. By ensuring that the electricity consumed is derived from renewable energy sources, this type of PPA clearly demonstrates the use of renewable energy in power consumption. Physical PPAs are well-suited to companies that wish to procure electricity together with its environmental value or clearly demonstrate their use of renewable energy.
Virtual PPAs
A virtual PPA is a contract in which the consumer receives only the environmental value of renewable energy. Because this type of agreement is less affected by power plant location and grid constraints, it can flexibly accommodate companies with sites nationwide. Virtual PPAs are an effective option for companies that wish to transition to renewable energy while maintaining their existing power procurement arrangements.
*Power producers: Corporations and other entities engaged in the commercial sale of electricity they generate
*Consumers: Corporations and other entities seeking environmental value and a stable supply of electricity
*The graphics depicting physical and virtual PPAs are partially adapted from the Renewable Energy Institute's Corporate PPA Guidebook
*Non-fossil value: The environmental value itself—namely, “zero CO₂ emissions”—derived from sources such as renewable energy and nuclear power (concept)
(Reference) Non-fossil certificates: Certificates (products) created under a framework established by Japan’s Ministry of Economy, Trade and Industry, which separates this non-fossil value and makes it tradable on the market
Corporate PPAs across Japan
Cosmo Eco Power utilizes wind power plants located across Japan to provide the environmental value of renewable energy to companies of various sizes across a wide range of industries. By leveraging its nationwide wind farm portfolio, the Company connects locally rooted renewable energy with companies’ decarbonization efforts.
PPA counterparties
Owned wind farms and corporate PPA counterpartiesas of March 24, 2026
Operating status
Total in-operation: 145 turbines, 349,250 kW
Under construction: 52 turbines, 190,130 kW
*Including FIP sites: 153,200 kW
Selected power plants
Cosmo Eco Power entered into a virtual PPA with NEC Corporation. Under the agreement, NEC will apply the environmental value of electricity supplied by the Chuki Wind Farm at its data centers, aiming to cover approximately 50% of the electricity consumed with renewable energy.
| Facility capacity | 48,300kW |
|---|---|
| Contracted company | NEC Corporation |
| Related press release | Cosmo Eco Power Concludes Corporate PPA with NEC~Utilizing Green Electricity Generated at the Chuki Wind Farm for Data Centers and Other Facilities~ |
Cosmo Eco Power entered into a virtual PPA with Murata Manufacturing. Under the agreement, Murata will receive the environmental value of electricity generated at the Oita and Chuki Wind Farms in the form of non-fossil certificates, with a projected annual CO₂ emissions reduction of approximately 13,700 tons.
| Facility capacity | Oita Wind Farm：14,000kW Chuki Wind Farm：48,300kW |
|---|---|
| Contracted company | Murata Manufacturing Co., Ltd. |
| Related press release | Cosmo Eco Power Concludes Virtual PPA with Murata~Harnessing Power from the Oita and Chuki Wind Farms to Cut Annual CO₂ Emissions by 13,700 Tons~ |
Cosmo Eco Power entered into a virtual PPA with JR Kyushu. Under the agreement, JR Kyushu will apply the environmental value of electricity generated at the Oita Wind Farm to a portion of the electricity used by the Nishi Kyushu Shinkansen. Both companies are committed to promoting the wider adoption of renewable energy and the development of local communities.
| Facility capacity | 14,000kW |
|---|---|
| Contracted company | Kyushu Railway Company |
| Related press release | Cosmo Eco Power Concludes Virtual PPA with JR Kyushu~Harnessing Renewable Energy from Oita Wind Farm to Power the Nishi Kyushu Shinkansen~ |
Cosmo Eco Power entered into a virtual PPA with SECOM, under which SECOM will apply the environmental value of renewable energy generated at the Chuki Wind Farm to a portion of the electricity used in its business operations.
| Facility capacity | 48.3MW |
|---|---|
| Contracted company | SECOM Co., Ltd. |
| Related press release | Cosmo Eco Power Concludes Virtual PPA with Secom ~Utilizing the Chuki Wind Farm in Wakayama Prefecture~ |
Under a virtual PPA, Cosmo Eco Power will provide NTN Corporation with approximately 10 million kilowatt-hours (kWh) worth of environmental value associated with electricity generated at Chuki Wind Farm per year in the form of non-fossil certificates over a 16-year period.
| Facility capacity | 48,300 kW (2,100 kW x 23 wind turbines) |
|---|---|
| Contracted company | NTN Corporation |
| Related press release | Cosmo Eco Power Signs Corporate Power Purchase Agreement with NTN to Supply Renewable Energy from Chuki Wind Farm |
Cosmo Eco Power and U-POWER entered into an agreement to supply the entire amount of renewable energy generated by the Goto-Hassakubana Wind Power Plant (hereafter, “the Plant”) under a three-year, short-term corporate PPA, starting in November 2024. Additionally, the two companies have signed a one-year retail supply agreement, effective from November 2024, for the in-house generated electricity required to operate the Plant.
| Facility capacity | 1,200kW (1,200kW × 1 wind turbine) |
|---|---|
| Contracted company | U-POWER Co., Ltd. (U-NEXT HOLDINGS Co., Ltd. group company) |
| Related press release | Cosmo Eco Power to Start Supplying Electricity and Environmental Value Generated at its Goto-Hassakubana Wind Power Plant to U-NEXT HOLDINGS and U-POWER Customers via U-POWER ~Three-year Short-term Corporate PPA Concluded to Contribute to Renewable Energy Uptake~ |
In the first virtual PPA in the Japanese railway industry to utilize onshore wind power, Cosmo Eco Power provides Tokyo Metro with approximately 21 million kilowatt-hours (kWh) worth of environmental value (renewable energy certificates) per year, generated by the Himekami Wind Park.
| Facility capacity | 18MW (2MW × 9 turbines) |
|---|---|
| Contracted company | Tokyo Metro Co., Ltd. |
| TEPCO Energy Partner, Inc. | |
| Related press release | Tokyo Metro Becomes First Railway Operator to Introduce a Virtual Onshore Wind PPA Set to Partially Transition Electricity Used by Ginza Line to Virtually 100% Renewable Energy |
Conclusion of an onshore virtual PPA
Cosmo Energy Holdings and Cosmo Eco Power entered into a basic agreement with West Japan Railway Company (JR West) to discuss further expanding the share of renewable energy-derived electricity used to power railway operations. This expansion effort is being achieved through an onshore virtual PPA – a contract that involves the direct purchase of only the environmental value of electricity generated. Under the agreement, Cosmo Eco Power will provide JR West with approximately 40 million kilowatt-hours (kWh) worth of environmental value associated with electricity generated at its Chuki Wind Farm per year.
| Facility capacity | 48,300kW |
|---|---|
| Contracted company | West Japan Railway Company |
| Related press release | Cosmo and JR West Sign Basic Agreement Toward Further Expansion of Renewable Energy ～Efforts to be Driven by Virtual PPA Centered on Wind Power Generation～ Cosmo Concludes First Virtual PPA With JR West ~Utilizing Cosmo Eco Power’s Chuki Wind Farm for Wind Power Generation~ |
Cosmo Eco Power is supplying Amazon with renewable energy produced at the New-Mutsu-Ogawara Wind Farm, which commenced commercial operations on July 1, 2025, under a 20-year corporate PPA.
| Facility capacity | 33MW (4.3MW × 8 turbines, output curtailed to capacity specified on left) |
|---|---|
| Contracted company | Amazon |
| Related press release |
Cosmo Eco Power signed a corporate PPA to supply Panasonic Operational Excellence with a portion of the electricity and environmental value generated by the Himekami Wind Park, which it operates, for approximately 15 years.
| Facility capacity | 18MW (2MW × 9 turbines) |
|---|---|
| Contracted company | Panasonic Operational Excellence Co., Ltd. |
| Related press release | Cosmo Eco Power Signs First Corporate Power Purchase Agreement (PPA) to Supply Power Generated at the Himekami Wind Park to Panasonic Operational Excellence (available in Japanese only) |
Strengths of Cosmo Eco Power
Nearly 30 years of wind power experience
Cosmo Eco Power’s core strength is its roughly 30-year track record and extensive data accumulated from wind power generation across Japan, reflecting its pioneering role in the industry. Based on this expertise, the Company provides tailored proposals and consulting services to companies considering the use of wind power. Its power plants consistently maintain an operating rate above 90%, ensuring both a stable electricity supply and dependable delivery of environmental value.
Integrated operations and maintenance framework combined with on-site capabilities
Another key feature of Cosmo Eco Power is its in-house management of power plant operations and maintenance (O&M), backed by a team of experts highly experienced in wind turbine maintenance. Drawing on these on-site capabilities honed over years of addressing diverse operational challenges, the Company ensures rapid restoration and reliable operation of its power plants. These technological capabilities and skilled personnel are central to Cosmo Eco Power’s competitive advantage.
About Aggregation
Addressing fluctuations in renewable energy
Renewable energy output is inherently variable due to weather and other factors. Cosmo Eco Power mitigates this variability through a service that aggregates wind and solar power, allowing the two sources to complement each other and stabilize supply. Leveraging its deep understanding of the characteristics of renewable energy, Cosmo Eco Power reliably delivers electricity.
Mechanism to support stable supply
Cosmo Eco Power mitigates output variability by aggregating and managing renewable energy sources, not only from its own wind power plants but also from those owned by other companies. This ensures the stable delivery of electricity and environmental value to businesses. Aggregation underpins the success of corporate PPAs.
*Aggregation: A mechanism that bundles and centrally controls distributed energy resources, such as wind and solar power, enabling the balancing of power supply and demand, trading in electricity markets, and the supply of electricity to consumers