HESTA Solar Installed on Gymnasium Roof at Tokyo Metropolitan Kuramae Technical High School, Operations to Begin at End of October

HESTA Okura Co., Ltd. has installed HESTA Solar on the gymnasium roof of Tokyo Metropolitan Kuramae Technical High School (Kuramae, Taito-ku) as part of the Tokyo Metropolitan Government's project to introduce solar power generation systems at metropolitan high schools and special needs schools. Panel installation was completed on October 15, 2026. After inspections and application procedures, operations are scheduled to begin at the end of October 2026. This is the second project at a metropolitan school, following Tokyo Metropolitan Tanashi Technical High School in March 2026.

Overview of the Installation

• Installation location: Gymnasium roof (newly installed)
• Panels: 187 HESTA Solar panels
• System capacity: 82.28 kW
• Storage battery: 15 kWh
• Installation method: Adhesive method requiring no drilling (direct bonding)
• Estimated annual power generation: 85,453 kWh
• Estimated CO2 reduction: 33,113 kg per year (equivalent to approx. 2,365 cedar trees)

Background of the Installation

Conventional glass panels have significant weight and roof-shape limitations, and in some cases could not be installed on gymnasium roofs. HESTA Solar is lightweight and can be installed with an adhesive method that does not require drilling holes in the roof. This made installation on a gymnasium roof, which had previously been difficult, possible.

The school is designated as an evacuation shelter for earthquakes and other disasters in Taito-ku. It is equipped with a 15 kWh storage battery, which can supply power to some facilities, such as the staff room, even during a power outage. This also helps maintain school functions during disasters, including shelter operations, and ensures information gathering and communication systems.

Features of HESTA Solar

It is up to 80% lighter than conventional glass panels and is 3.3 mm thick. It can also be installed in a curved state or attached to walls. It comes with a 25-year warranty and has been certified as a "Functional PV" by Cool Net Tokyo.