Mizuho, J-POWER, and Scalar Complete Successful Trial of 24/7 Hourly-Matched Corporate PPA
A consortium of Japanese financial institutions, energy providers, and technology startups have successfully demonstrated a "24/7 Corporate Power Purchase Agreement" (C-PPA). The trial, led by Mizuho Bank, Mizuho Securities, Mizuho Leasing, Electric Power Development (J-POWER), and the DeepTech startup Scalar, is a step toward real-time carbon-free energy (CFE) accounting in Japan.
The Shift to Hourly Matching
The initiative addresses a looming shift in global sustainability standards. The Greenhouse Gas (GHG) Protocol, the international standard for corporate emissions reporting, is currently undergoing revisions. Proposed changes are expected to move away from annual averages in favor of "Hourly Matching"—a stricter requirement that demands electricity consumption be matched with renewable generation on a 1-hour basis, 24 hours a day, 365 days a year.
As global supply chains face increasing pressure to prove real-time decarbonization, this trial validates a commercial path for companies to meet these more rigorous international requirements.
Technological Infrastructure and Roles
The demonstration utilized a diverse mix of non-fossil energy sources, including solar and wind. To ensure the integrity of the data, the group employed an "Environmental Value Platform" developed by J-POWER and Scalar.
The division of labor among the partners was structured as follows:
- Mizuho Bank & Mizuho Securities: Spearheaded the development of the C-PPA solution and the underlying financial schemes.
- Mizuho Leasing (via subsidiary ML Power): Provided solar energy supply and related generation data.
- J-POWER: Supplied a diverse portfolio of renewable energy (hydro, wind, geothermal, and solar) and managed the technical verification of supply-demand balancing.
- Scalar: Provided the technological backbone for data integrity. Using its "ScalarDB" (a universal HTAP engine) and "ScalarDL" (distributed ledger software), the startup ensured that power generation and consumption records were tamper-proof and capable of third-party verification.
Market Implications
By successfully matching consumption data from actual business sites with real-time generation from multiple power plants, the consortium has proven that "24/7 C-PPA" solutions are technically viable.
For corporations, this provides a framework for "Advanced Decarbonization Management," allowing them to claim highly reliable, real-time renewable energy usage. The consortium members stated they intend to leverage the results of this trial to commercialize 24/7 C-PPA solutions, aiming to support Japanese companies in staying compliant with evolving global ESG standards and GHG Protocol updates.
Scalar, in particular, noted that it plans to accelerate the global expansion of its database technology, positioning itself as a key infrastructure provider for the "traceability and reliability" of environmental value.
Norbert Gehrke
