Tokyo Century and TESS Holdings Launch Large-Scale Grid Battery Project in Fukuchiyama City, Kyoto Prefecture

Tokyo Century Corporation (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Hiroharu Fujiwara; hereinafter "Tokyo Century") and TESS Holdings Corporation (Headquarters: Yodogawa-ku, Osaka; President: Kazuki Yamamoto; hereinafter "TESS Holdings") have officially launched a large-scale grid battery storage project in Fukuchiyama City, Kyoto Prefecture, based on their capital and business alliance (※).

Image of the groundbreaking safety prayer ceremony (June 11, 2026)

The facility will be a large-scale grid battery storage system with a transmission-side output of approximately 50MW and a storage capacity of approximately 209MWh. Operating as a 'full merchant' project without relying on subsidies, it will generate revenue through participation in the electricity market while contributing to grid stabilization—a critical requirement for the expanded adoption of renewable energy. By combining the strengths of both companies, the project aims for rapid development, early commercialization, and the establishment of a robust power management system.

By integrating TESS Group’s engineering expertise in energy infrastructure with Tokyo Century’s advanced project structuring and financial know-how, the partnership will advance initiatives toward a carbon-neutral society. Through this project, both companies aim to accelerate the construction of a value chain in the environmental infrastructure sector—the core objective of their capital and business alliance.

※ For details on the capital and business alliance, please refer to: Announcement regarding share offering, changes in major shareholders including the largest shareholder, and capital and business alliance (Published by TESS Holdings on December 6, 2024) https://ssl4.eir-parts.net/doc/5074/tdnet/2537783/00.pdf

[Project Overview]

Project Owner

A contractual corporation 100% funded by Tokyo Century Corporation

Location

Fukuchiyama City, Kyoto Prefecture

System Description

Grid battery storage system

Transmission-side output: 49,500kW, Storage capacity: 209,235kWh (5,365kWh × 39 units)

EPC Contractor

TESS Engineering Corporation

Planned Commercial Operation Start

June 2028 (tentative)

[About Tokyo Century Corporation]

Headquarters

3 Kanda-Neribei-cho, Chiyoda-ku, Tokyo

Representative

President and CEO Hiroharu Fujiwara

Established

July 1969

Capital

81,129 million yen

Business Activities

Domestic business, international business, social infrastructure, transport, mobility, corporate investment

Website

https://www.tokyocentury.co.jp/jp/

[About TESS Holdings Corporation]

Headquarters

6-1-1 Nishi-Nakajima, Yodogawa-ku, Osaka, Shin-Osaka Prime Tower

Representative

President Kazuki Yamamoto

Established

July 2009

Capital

6,760 million yen

Business Activities

Group management as a holding company

Website

https://www.tess-hd.co.jp/

[About TESS Engineering Corporation]

Headquarters

6-1-1 Nishi-Nakajima, Yodogawa-ku, Osaka, Shin-Osaka Prime Tower

Representative

President Toshihiro Takasaki

Established

May 1979

Capital

100 million yen

Business Activities

EPC for energy-saving and renewable energy systems, Operation & Maintenance (O&M), Ownership, operation, and power sales of renewable energy power plants, retail electricity supply (new power), energy management services, 24/7 remote monitoring services, ERAB services, fuel supply services (LNG, biomass fuel, etc.), and more

Website

https://www.tess-eng.co.jp/

About Tokyo Century Corporation

Tokyo Century is a leading financial and service company in its industry, with leasing as its core business, and operates a unique business model integrating 'finance × service × business' through co-creation with partner companies both in Japan and overseas. The company operates in five key business areas: 'Domestic Leasing,' with a broad customer base; 'Automobility,' encompassing corporate and individual auto leasing and rental services; 'Specialty,' driving growth through aircraft and real estate; 'International,' with a network across over 30 countries and regions; and 'Environmental Infrastructure,' focusing on solar power generation and battery storage. Tokyo Century delivers unique financial and service solutions that contribute to solving societal challenges across a wide range of industries.