Announcement of Entry into Supply-Demand Adjustment Market at Makinohara Power Storage Facility
Blue Sky Energy announced that its grid-connected battery storage facility in Makinohara City, Shizuoka Prefecture, has commenced operation for the supply-demand adjustment market just 36 days after starting commercial operation. This is one of the fastest cases in Japan and is the first project in the company's plan to deploy 100 grid-connected battery storage facilities nationwide by 2029.
📋 Article Processing Timeline
- 📰 Published: April 29, 2026 at 01:26
- 🔍 Collected: April 28, 2026 at 17:02
- 🤖 AI Analyzed: April 28, 2026 at 17:13 (11 min after Collected)
Blue Sky Energy Co., Ltd. announced that its grid-connected battery storage facility in Makinohara City, Shizuoka Prefecture, has commenced operation for the supply-demand adjustment market as of April 28, 2026.
This storage facility will conduct multi-use operations, combining the wholesale electricity market (JEPX) and the supply-demand adjustment market, with Eurus Energy Holdings Co., Ltd. (hereinafter "Eurus Energy"), Japan's No. 1 wind and solar power generation business operator, acting as the aggregator.
The facility, which began commercial operation on March 23, 2026, achieved entry into the supply-demand adjustment market on April 28 of the same year. Entering the market just 36 days after the start of commercial operation is one of the fastest cases among publicly announced grid-connected battery storage facilities in Japan*. This facility is the first project in our program to develop 100 grid-connected battery storage facilities nationwide by 2029, demonstrating our strong capability to realize large-scale pipelines and our swift ability to launch from commercial operation to market entry.
*As of April 2026, based on our research from company press releases, etc. Excludes cases of simultaneous entry.
**Significance of entering the supply-demand adjustment market in 36 days from commercial operation:**
For a grid-connected battery storage facility to enter the supply-demand adjustment market, it typically takes about 3 to 6 months from the start of commercial operation. However, in this case, market entry was achieved in 36 days. After the start of commercial operation, various preparations are required, including registration as a specific wholesale supplier with the Electric Power Supply-Demand Adjustment Exchange (EPRX), construction of communication connections for the simplified dispatch system and dedicated online lines, conclusion of contracts with aggregators, various tests related to grid interconnection, and verification of battery control logic that meets product requirements.
We achieved a significant reduction in the required period by working closely with Eurus Energy from the pre-commercial operation phase and proceeding with practical preparations for market entry in parallel.
**Background:**
With the increasing adoption of renewable energy, there is an urgent need to secure adjustment capacity to absorb fluctuations in power generation from variable renewable sources like solar and wind, and to maintain a stable electricity supply.
In April 2024, trading for all five products began on the Electric Power Supply-Demand Adjustment Exchange (EPRX), and from March 14, 2026, all products will transition to day-ahead trading, indicating a rapid advancement in the market system.
As an independent renewable energy business operator with a track record of over 1,250 sites and a cumulative total of over 650MW in solar EPC and O&M businesses, we position the battery storage business as our next core business. We have achieved entry into the supply-demand adjustment market for this facility at one of the fastest speeds after the start of commercial operation.
**Location:** Makinohara City, Shizuoka Prefecture
**Battery type:** Lithium-ion battery
**Power output/Storage capacity:** 2MW/8MWh
**Commercial operation start:** March 23, 2026
**Supply-demand adjustment market trading start:** April 28, 2026 (36 days from commercial start)
**Markets utilized:** Wholesale electricity market, supply-demand adjustment market
**Aggregator:** Eurus Energy Holdings Co., Ltd.
**Business entity:** Blue Sky Energy Co., Ltd.
**Our Development Pipeline ~ 100 Grid-connected Battery Storage Facilities Nationwide by 2029 ~**
With the Makinohara storage facility as the first project, we plan to develop 100 grid-connected battery storage facilities nationwide by 2029. We already have a pipeline for the development of over 50 grid-connected battery storage facilities nationwide by 2027. Leveraging our network of 24 nationwide locations, land procurement capabilities cultivated through our solar EPC business, and our in-house construction and O&M system, we will steadily advance project realization.
By deepening partnerships with financial institutions including Mizuho Securities (including the formation of Japan's first large-scale battery storage fund co-located with solar power), leasing companies, major real estate companies, major gas companies, and investors, we will secure development funds. We will contribute to the realization of Japan's 2050 carbon neutrality goal and the achievement of the 2030 renewable energy ratio target of 36-38% by providing adjustment capacity through battery storage, thereby stabilizing the power grid and realizing a decarbonized society.
To efficiently and stably operate a group of 100 storage facilities, we obtained certification as a specific wholesale supplier (aggregator) on April 1, 2026. Going forward, under a "multi-aggregator strategy," we will contribute to maximizing business revenue and stabilizing the power grid by selecting the optimal combination of aggregators, battery systems, and EMS according to the conditions of each site.
*Supply-demand adjustment market: A market where general transmission and distribution operators procure the adjustment capacity necessary to maintain the balance between electricity supply and demand. Operated by the Electric Power Supply-Demand Adjustment Exchange (EPRX).
*Adjustment capacity: Increase or decrease in output to balance supply and demand in the power grid.
This storage facility will conduct multi-use operations, combining the wholesale electricity market (JEPX) and the supply-demand adjustment market, with Eurus Energy Holdings Co., Ltd. (hereinafter "Eurus Energy"), Japan's No. 1 wind and solar power generation business operator, acting as the aggregator.
The facility, which began commercial operation on March 23, 2026, achieved entry into the supply-demand adjustment market on April 28 of the same year. Entering the market just 36 days after the start of commercial operation is one of the fastest cases among publicly announced grid-connected battery storage facilities in Japan*. This facility is the first project in our program to develop 100 grid-connected battery storage facilities nationwide by 2029, demonstrating our strong capability to realize large-scale pipelines and our swift ability to launch from commercial operation to market entry.
*As of April 2026, based on our research from company press releases, etc. Excludes cases of simultaneous entry.
**Significance of entering the supply-demand adjustment market in 36 days from commercial operation:**
For a grid-connected battery storage facility to enter the supply-demand adjustment market, it typically takes about 3 to 6 months from the start of commercial operation. However, in this case, market entry was achieved in 36 days. After the start of commercial operation, various preparations are required, including registration as a specific wholesale supplier with the Electric Power Supply-Demand Adjustment Exchange (EPRX), construction of communication connections for the simplified dispatch system and dedicated online lines, conclusion of contracts with aggregators, various tests related to grid interconnection, and verification of battery control logic that meets product requirements.
We achieved a significant reduction in the required period by working closely with Eurus Energy from the pre-commercial operation phase and proceeding with practical preparations for market entry in parallel.
**Background:**
With the increasing adoption of renewable energy, there is an urgent need to secure adjustment capacity to absorb fluctuations in power generation from variable renewable sources like solar and wind, and to maintain a stable electricity supply.
In April 2024, trading for all five products began on the Electric Power Supply-Demand Adjustment Exchange (EPRX), and from March 14, 2026, all products will transition to day-ahead trading, indicating a rapid advancement in the market system.
As an independent renewable energy business operator with a track record of over 1,250 sites and a cumulative total of over 650MW in solar EPC and O&M businesses, we position the battery storage business as our next core business. We have achieved entry into the supply-demand adjustment market for this facility at one of the fastest speeds after the start of commercial operation.
**Location:** Makinohara City, Shizuoka Prefecture
**Battery type:** Lithium-ion battery
**Power output/Storage capacity:** 2MW/8MWh
**Commercial operation start:** March 23, 2026
**Supply-demand adjustment market trading start:** April 28, 2026 (36 days from commercial start)
**Markets utilized:** Wholesale electricity market, supply-demand adjustment market
**Aggregator:** Eurus Energy Holdings Co., Ltd.
**Business entity:** Blue Sky Energy Co., Ltd.
**Our Development Pipeline ~ 100 Grid-connected Battery Storage Facilities Nationwide by 2029 ~**
With the Makinohara storage facility as the first project, we plan to develop 100 grid-connected battery storage facilities nationwide by 2029. We already have a pipeline for the development of over 50 grid-connected battery storage facilities nationwide by 2027. Leveraging our network of 24 nationwide locations, land procurement capabilities cultivated through our solar EPC business, and our in-house construction and O&M system, we will steadily advance project realization.
By deepening partnerships with financial institutions including Mizuho Securities (including the formation of Japan's first large-scale battery storage fund co-located with solar power), leasing companies, major real estate companies, major gas companies, and investors, we will secure development funds. We will contribute to the realization of Japan's 2050 carbon neutrality goal and the achievement of the 2030 renewable energy ratio target of 36-38% by providing adjustment capacity through battery storage, thereby stabilizing the power grid and realizing a decarbonized society.
To efficiently and stably operate a group of 100 storage facilities, we obtained certification as a specific wholesale supplier (aggregator) on April 1, 2026. Going forward, under a "multi-aggregator strategy," we will contribute to maximizing business revenue and stabilizing the power grid by selecting the optimal combination of aggregators, battery systems, and EMS according to the conditions of each site.
*Supply-demand adjustment market: A market where general transmission and distribution operators procure the adjustment capacity necessary to maintain the balance between electricity supply and demand. Operated by the Electric Power Supply-Demand Adjustment Exchange (EPRX).
*Adjustment capacity: Increase or decrease in output to balance supply and demand in the power grid.