Noval Solar's Grid-Connected Storage Power Plant Developed in Itoshima City, Fukuoka Prefecture, Commences Commercial Operation

Noval Solar LLC (a wholly-owned subsidiary of Noval Holdings Co., Ltd.), as a registered power producer by the Ministry of Economy, Trade and Industry, has been involved in the development and operation of numerous solar power plants. In recent years, with the spread of renewable energy, primarily solar power, fluctuations in power generation due to weather and other factors have made balancing electricity supply and demand a significant challenge. Therefore, the introduction of grid-connected battery storage systems as 'ancillary services' to stabilize the power transmission and distribution network is being promoted, mainly by the Agency for Natural Resources and Energy. Against this backdrop, Noval Solar has leveraged its extensive expertise in renewable energy development to promote large-scale grid-connected battery storage projects aimed at stabilizing the power grid and further expanding the adoption of renewable energy.

The storage power plant, 'Noval Power A2', completed its connection to the Kyushu Electric Power Network's extra-high voltage power system (22kV) on November 11, 2025. Following a testing period until May 7, 2026, it commenced trading on the Japan Electric Power Exchange (JEPX) on May 9, 2026, and on the Electricity Demand-Supply Adjustment Market (EPRX) on May 15, 2026. Through the operation of this storage power plant, Noval Solar will participate in various electricity markets, including the wholesale electricity market, the demand-supply adjustment market, and the capacity market, actively contributing to the realization of carbon neutrality and the stabilization of power supply.

Furthermore, for the operation of this storage power plant, E-Flow LLC (a wholly-owned subsidiary of Kansai Electric Power Co., Inc.) will control the equipment as an aggregator, based on an operation consignment contract concluded with Noval Solar.

Adoption of Tesla's Megapack Battery with Standard Fire and Safety Features

This storage power plant utilizes the Megapack, a lithium-ion battery unit manufactured by Tesla, the world's leading battery manufacturer. The system is configured with a total of four units rated for a 2-hour duration (rated output per unit: 1,927.2kW / storage capacity: 3,854.4kWh), resulting in a large-scale storage facility with a total rated output of 7,708.8kW and a total storage capacity of 15,417.6kWh.

The adopted Megapack comes standard with fire and safety features, designed to prevent serious accidents caused by heat generation or abnormalities. Each unit is equipped with a structure that suppresses the spread of damage in the event of thermal runaway, and the arrangement and spacing of units are designed to prevent inter-unit fire spread. Additionally, the battery's condition is constantly monitored by a Battery Management System (BMS) for voltage, temperature, etc. A mechanism is in place to promptly stop charging and discharging upon detection of an abnormality. In parallel, a cooperative system with relevant organizations, including the fire department, has been established to ensure a rapid and appropriate response during emergencies.

Business Promotion Emphasizing Consensus Building with Local Communities and Government

Noval Solar prioritizes safe and secure operations for the local community in promoting its grid-connected battery storage business. During the project planning phase, sufficient explanations were provided to local residents, and an agreement was signed with the local government based on environmental conservation regulations. Furthermore, an application for consent was submitted to Itoshima City, the jurisdiction, in accordance with Article 6 of the Itoshima City Ordinance on Regulations for Terrain Changes. Noval Solar will continue to strive for the operation of the storage power plant with full consideration for the surrounding environment and local safety, while valuing dialogue with the local community.

Noval Solar and its group companies will continue to contribute to the realization of a sustainable energy society through the development and operation of battery storage systems.

【Noval Power A2 Facility Overview】

Official Name: Noval Power A2 Location: Itoshima City, Fukuoka Prefecture Battery: Tesla Megapack System Configuration: 1,927.2kW / 3,854.4kWh (2-hour duration unit) x 4 units Total System Rated Output: 7,708.8kW Total System Storage Capacity: 15,417.6kWh Connection Capacity: 7,693.8kW (Maximum received power) Connection Voltage: Kyushu Electric Power Extra-High Voltage 22kV Connection Date: November 11, 2025 Testing Period: November 11, 2025 - May 7, 2026 Commercial Operation Start Date: May 9, 2026 (JEPX) / May 15, 2026 (EPRX) Aggregator: E-Flow LLC (wholly-owned subsidiary of Kansai Electric Power Co., Inc.)

【Inquiries Regarding This Matter】

To: Noval Solar LLC Contact: DR Team Email: info@noval.jp HP: https://www.noval.jp