Sun 10, Oct.2021

GPSS GROUP and Matsunoyama Onsen held the opening ceremony of their sustainable geothermal power plant called: “ The Matsunoyama Onsen:Community Power Generation”

Commemorative Photo
From the left, Mayor of Tokamachi, Yoshifumi Sekiguchi, Representative of Matsunoyama Onsen GK Manma, Kazunari Yanagi, Representative of Geothermal Development & Investment Inc. Tomofumi Ono, Representative of GPSS Group, Masaaki Mezaki


On December 13, 2020, the opening ceremony of “The Matsunoyama Onsen:Community Power Generation” was held in Tokamachi. The Geothermal Power Generation is a sustainable power plant that utilizes the well-known resources of Matsunoyama Onsen, such as steam and hot water. It is operated by Matsunoyama Onsen GK The EARTH that is a joint company from Matsunoyama Onsen GK Manma and Geothermal Development & Investment Inc. of GPSS group.

At the opening ceremony, the Mayor of Tokamachi, Mr. Yoshifumi Sekiguchi, said “In Tokamachi City, we have set a goal of using renewable energy to cover 30% of the electricity consumed in our area after the Great East Japan Earthquake. This geothermal power generation is the first business that comes out from this goal. In one hand, the desire of the region to utilize the abundant resources of Matsunoyama Onsen; and in another hand, the proposal by Geothermal Development Co., Ltd. to deliver a project for “Use of resources that do not affect the supply of hot springs”, are a great combination of efforts from both sides. I would like to pay tribute to everyone involved for their longing efforts.”

Also, Mr. Kazunari Yanagi of Matsunoyama Onsen GK The EARTH said “There were many times when we had a lot of fierce and hot discussions up about this topic, however, we were able to welcome the opening of the power plant. As the GPSS group’s slogan is: Ignite your soul, not the Earth, I appreciate that all the members of the GPSS group burnt their souls and passion for Matsunoyama, same for everyone who was involved in this project. In the future, I would like to combine sustainable tourism and sustainable environment to further encourage local attractivity.”

Mr. Tomofumi Ono from Geothermal Development & Investment Inc. of the GPSS group explained the mechanism of ORC power generation used in the power plant. In addition, he talked that “We have a management philosophy of promoting geothermal development through joint business with local area and contributing to the local community. Three years ago, I remember when we visited the Matsunoyama Onsen wishing deeply to achieve a sustainable cycle with power generation utilizing their own resources. After many discussions with the Tokamachi City and the community of Matsunoyama Onsen, we were finally able to start operating the power plant. Even if we are at our start, we will make sure that this power plant will operate stably for the next 15 years.”

“The Matsunoyama Onsen:Community Power Generation” will be sold to Tohoku Electric Power as from January 15, 2021 using the FIT system, and after that, through Minnadenryoku Co., Ltd. will be supplied to electricity consumers nationwide, including Setagaya-ku that has friendly relations with Tokamachi City.

Please see the details of the power plant and the organizations involved in this project as below.

View from outside of The Matsunoyama Onsen:Community Power Generation
View from inside of The Matsunoyama Onsen:Community Power Generation


Inquiries regarding this release

GPSS Public Relations Office

Taira / Abe


ORC Power Plant Facility

1)Power Station Name



4Rated output

5)Start of power generation

6Facility Design/Construction

:  The Matsunoyama Onsen:Community Power Generation    

:  1147-1, 1147-2, Azadotoku, Matsunoyamayumoto, Tokamachi, Niigata

: Matunoyama Onsen GK The EARTH

: 210 kW

: January 15, 2021 (planned)

:  GPSS Engineering Inc.


Stakeholder Overview

(1) Matunoyama Onsen GK The EARTH

Company Name

Head Office

: Matunoyama Onsen GK The EARTH

: 9-4, Yumoto, Matsunoyama, Tokamachi-shi, Nigata, 942-1432


(2) Matsunoyama Onsen GK Manma

Company Name


Head Office



: Matsunoyama Onsen GK Manma

: Yanagi Kazunari

: Hinanoyado Chitose, 49-1 Matsunoyama Yumoto, Tokamachi City, Niigata Prefecture, 942-1432

Planning and selling local tours to introduce the charm of Matsunoyama)



(3) Geothermal Development & Investment Inc.

Company Name


Established In

Head Office



: Geothermal Development & Investment Inc.

: Tomofumi Ono

: March, 2015

: Shibakoen ND Building 6F, 2-5-10 Shiba, Minato-ku, Tokyo, 105-0014

: Investment in geothermal power generation projects.