Information-Package Corporate PPA: Latest Trends in Japan(2026 Edition)

Renewable Energy Institute published an updated information package “Corporate PPA: Latest Trends in Japan (2026 Edition)”.
 
Corporate PPAs (Power Purchase Agreements) are increasingly adopted by electricity consumers such as companies and local governments in Japan as a method of procuring additional renewable electricity that contributes to expanding the deployment of renewable energy. Economic benefits of corporate PPAs are brought by the declining costs of renewable energy, especially solar, while the import prices of fossil fuels have driven up regular electricity tariffs. Corporate PPAs are no longer limited to large electricity consumers; medium and small-sized consumers are also beginning to purchase renewable electricity through PPAs. In addition, there has been a growing number of cases where multiple consumers jointly make corporate PPAs.
 
This information package explains the three types of corporate PPA contract structures (on-site, physical, virtual) with characteristics, advantages and challenges of each type. It also estimates the latest contract prices and compares the consumer costs with regular electricity tariffs. Although contract prices for on-site PPAs by solar have shown an upward trend, the consumer costs remain lower than regular electricity tariffs. Meanwhile, contract prices for physical and virtual PPAs have been stable, making them an effective method for consumers to secure environmental attributes with no carbon emissions for the long term.

<Contents>
1．Contract Structures
　・On-site PPA
　・Physical PPA
　・Virtual PPA
2．Cost Comparisons
3．Latest Projects
4．Issues & Solutions