REXEV Launches Local Energy Production and Consumption Project Utilizing Reverse Power Flow from Solar-Plus-Storage Batteries in Odawara City
REXEV Co., Ltd. has commenced a next-generation energy management project in Odawara City, Kanagawa Prefecture, utilizing solar-plus-storage batteries with reverse power flow to the grid. Collaborating with TEPCO Group, Kyocera, and Shonan Electric Power, this initiative contributes to building Japan's first city-level local energy production and consumption platform, aiming to efficiently use and monetize regional renewable energy.
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- 📰 Published: May 11, 2026 at 19:00
- 🔍 Collected: May 11, 2026 at 10:31
- 🤖 AI Analyzed: May 12, 2026 at 06:02 (19h 30m after Collected)
REXEV Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Ken Watabe; hereinafter "REXEV") will commence next-generation energy management in Odawara City, Kanagawa Prefecture, utilizing solar-plus-storage batteries with reverse power flow to the electricity grid.
In collaboration with TEPCO Group, Kyocera Corporation, Shonan Electric Power Co., Ltd., and others, this initiative will contribute to the construction of Japan's first city-level "local energy production and consumption platform." Prior to the full-scale operation of the platform, an inauguration ceremony was held at Odawara City Hall on March 27, 2026.
Social Significance/Background
In recent years, the frequent occurrence of "output curtailment" and the increasing risk of imbalance due to the expanded introduction of renewable energy have become national challenges. Additionally, there is a strong demand for "local production for local consumption of electricity," which involves harmonious coexistence with regional renewable energy and the efficient use of locally generated renewable energy within the region.
Towards the construction of a sustainable "regional self-sufficiency zone" promoted by Odawara City, a leading decarbonization area, REXEV will leverage its advanced charge/discharge control technology cultivated through EV energy management. The company will participate in the platform to evolve regional renewable energy from merely "selling" to "intelligently using and generating revenue."
Initiatives
This project is implemented as part of the platform, integrating and controlling the solar power generation and storage batteries introduced at Odawara City's Wanpaku Land with REXEV's system, and implementing the following three points:
1. Imbalance Adjustment in Collaboration with AEMS
In collaboration with the Area Energy Management System (AEMS) built within the platform, it will contribute to simultaneous supply and demand by absorbing and adjusting renewable energy imbalances (differences between generation plans and actual results) occurring within the area.
2. Monetization through Participation in Supply-Demand Adjustment Markets, etc.
By leveraging the flexible resources of storage batteries and participating in supply-demand adjustment markets, new revenue models will be created.
3. Market-Linked Charge/Discharge Control and Promotion of Local Production and Consumption
Storage batteries will be charged during periods of surplus solar power generation (when electricity market prices are low) and discharged during periods of high prices, supplying and selling solar-derived electricity to local consumers through Shonan Electric Power.
Equipment Name | Main Equipment Manufacturer | Specifications
---|---|---
Solar Power Generation Equipment | Kyocera Panels | 50kW
Storage Equipment | BYD Batteries | 630kW・1,580kWh
Local photo of Wanpaku Land
Features
A key feature of this initiative is a market-linked model that assumes reverse power flow, where electricity is sent from storage batteries co-located with solar power generation to the electricity grid.
Unlike conventional systems primarily aimed at self-consumption, this case, which promotes local utilization using reverse power flow from storage batteries and directly approaches supply-demand adjustment and market transactions, is still rare nationwide. It is a model that can maximize the local production for local consumption of renewable energy.
(Note: Since supply-demand adjustment and market transactions are not considered local production for local consumption (as they are consumed at a national level), the text has been added to promote local utilization.)
Future Developments
Through initiatives in Odawara City, REXEV will verify the economic viability and stability of advanced energy management combining renewable energy and storage batteries. Based on the achievements of this project, REXEV will expand its scope to energy management businesses utilizing consumer-side storage batteries and deploy solutions to municipalities and companies nationwide facing similar challenges, leading the realization of a decarbonized society and a regional circular energy infrastructure.
Contact for this matter
REXEV Co., Ltd. Public Relations
Tel: 03-3525-8008 E-mail: info@rexev.co.jp
In collaboration with TEPCO Group, Kyocera Corporation, Shonan Electric Power Co., Ltd., and others, this initiative will contribute to the construction of Japan's first city-level "local energy production and consumption platform." Prior to the full-scale operation of the platform, an inauguration ceremony was held at Odawara City Hall on March 27, 2026.
Social Significance/Background
In recent years, the frequent occurrence of "output curtailment" and the increasing risk of imbalance due to the expanded introduction of renewable energy have become national challenges. Additionally, there is a strong demand for "local production for local consumption of electricity," which involves harmonious coexistence with regional renewable energy and the efficient use of locally generated renewable energy within the region.
Towards the construction of a sustainable "regional self-sufficiency zone" promoted by Odawara City, a leading decarbonization area, REXEV will leverage its advanced charge/discharge control technology cultivated through EV energy management. The company will participate in the platform to evolve regional renewable energy from merely "selling" to "intelligently using and generating revenue."
Initiatives
This project is implemented as part of the platform, integrating and controlling the solar power generation and storage batteries introduced at Odawara City's Wanpaku Land with REXEV's system, and implementing the following three points:
1. Imbalance Adjustment in Collaboration with AEMS
In collaboration with the Area Energy Management System (AEMS) built within the platform, it will contribute to simultaneous supply and demand by absorbing and adjusting renewable energy imbalances (differences between generation plans and actual results) occurring within the area.
2. Monetization through Participation in Supply-Demand Adjustment Markets, etc.
By leveraging the flexible resources of storage batteries and participating in supply-demand adjustment markets, new revenue models will be created.
3. Market-Linked Charge/Discharge Control and Promotion of Local Production and Consumption
Storage batteries will be charged during periods of surplus solar power generation (when electricity market prices are low) and discharged during periods of high prices, supplying and selling solar-derived electricity to local consumers through Shonan Electric Power.
Equipment Name | Main Equipment Manufacturer | Specifications
---|---|---
Solar Power Generation Equipment | Kyocera Panels | 50kW
Storage Equipment | BYD Batteries | 630kW・1,580kWh
Local photo of Wanpaku Land
Features
A key feature of this initiative is a market-linked model that assumes reverse power flow, where electricity is sent from storage batteries co-located with solar power generation to the electricity grid.
Unlike conventional systems primarily aimed at self-consumption, this case, which promotes local utilization using reverse power flow from storage batteries and directly approaches supply-demand adjustment and market transactions, is still rare nationwide. It is a model that can maximize the local production for local consumption of renewable energy.
(Note: Since supply-demand adjustment and market transactions are not considered local production for local consumption (as they are consumed at a national level), the text has been added to promote local utilization.)
Future Developments
Through initiatives in Odawara City, REXEV will verify the economic viability and stability of advanced energy management combining renewable energy and storage batteries. Based on the achievements of this project, REXEV will expand its scope to energy management businesses utilizing consumer-side storage batteries and deploy solutions to municipalities and companies nationwide facing similar challenges, leading the realization of a decarbonized society and a regional circular energy infrastructure.
Contact for this matter
REXEV Co., Ltd. Public Relations
Tel: 03-3525-8008 E-mail: info@rexev.co.jp