REXEV Provides Technical Support for NTT West's Smart Charging System Implementation
REXEV has provided technical support for NTT West's smart charging system, successfully implementing the first smart charging plan within the NTT Group. This initiative aims to resolve charging challenges associated with EV adoption and strengthen collaboration with the NTT Group.
📋 Article Processing Timeline
- 📰 Published: June 10, 2026 at 10:00
- 🔍 Collected: June 10, 2026 at 10:31 (31 min after Published)
- 🤖 AI Analyzed: June 12, 2026 at 16:34 (54h 2m after Collected)
REXEV Inc. (Headquarters: Chiyoda-ku, Tokyo; Representative Director: Ken Watanabe), a provider of EV introduction support and EV management systems for corporations and municipalities, has provided technical support for the implementation of the "N.mobi Smart Charging Plan" offered by NTT Business Solutions Ltd. at NTT West's Dewamachi Building (Kanazawa City, Ishikawa Prefecture).
This marks the first implementation case of the N.mobi smart charging plan within the NTT Group. REXEV's smart charging system, supporting 8 EVs, commenced operations on January 22, 2026. Leveraging this opportunity, both companies will strive to expand the sales of smart charging solutions.
■Background of Implementation and REXEV's New Initiatives
As corporate adoption of EVs (Electric Vehicles) accelerates towards achieving a decarbonized society, significant barriers include "increased electricity peaks due to charging," "soaring electricity costs," and "management workload for charging timing."
Previously, REXEV has supported corporate decarbonization primarily through the provision of EV car-sharing systems utilizing its proprietary e-Mobility Management Platform (hereinafter referred to as "eMMP"). However, with the full-scale spread of EVs, the demand for "smartification of charging infrastructure" beyond EV car-sharing has surged.
In response, REXEV is strengthening its offering of "smart charger systems" tailored to EV adoption, consolidating its operational expertise. The implementation of the "N.mobi Smart Charging Plan" at NTT West's Dewamachi Building is a core initiative in this strategy.
■Features of REXEV's Smart Charging System
This system overturns the conventional notion that "chargers should just charge" and provides an environment for easily and optimally charging installed EVs. It supports the international standard communication protocol OCPP (Open Charge Point Protocol), enabling direct control of commercially available smart chargers from REXEV's cloud system.
[System Configuration Diagram]
*Chargers with OCPP can easily connect to our cloud system regardless of vehicle model or smart charger manufacturer, enabling various energy management functions.
1. "Economical Automatic Charging" Based on Electricity Prices and Usage
The system automatically controls charging to avoid exceeding the facility's contracted power capacity, thus preventing high electricity bills due to demand surges. It can also link with electricity market prices to automatically select and charge during off-peak hours, reducing electricity costs without burdening staff. (Note: Approximately 20% reduction in charging electricity costs has been achieved through implementation).
2. "Optimized Charging Control" Linked with Vehicle Reservations
By integrating with vehicle management systems, the system automatically secures the necessary amount of electricity according to usage reservations. This eliminates the anxiety of not having a charged vehicle when needed and maintains optimal charge levels through a proprietary usage prediction system. If a vehicle reservation system is already in place, a system that predicts vehicle usage and performs optimal charging is also available, allowing for flexible service design according to customer needs.
3. "Clean Charging" Enhancing Environmental Value
It is possible to shift charging to times when solar power generation is high, by predicting solar output and electricity demand. By prioritizing charging with renewable energy over electricity derived from fossil fuels, decarbonization is accelerated.
*This feature is applicable only when solar power generation facilities are available.
4. Service Available for Existing Chargers
If chargers compatible with REXEV's eMMP are already installed, the service can be utilized without installing new chargers.
*The N.mobi Smart Charging Plan implemented at NTT West's Dewamachi Building utilizes existing chargers for functions such as peak power suppression control and smart charging based on predicted vehicle usage. The services used can be flexibly selected according to the customer's situation.
■Future Outlook
Starting with this project, REXEV will further deepen its collaboration with NTT Business Solutions and vigorously promote the widespread adoption of "smart charging" through system OEM provision. REXEV aims to comprehensively solve the EV operational challenges faced by companies, contributing to the realization of a sustainable society and the promotion of EV utilization.
■Contact Information
REXEV Inc. Public Relations
Tel: 03-3525-8008 E-mail: info@rexev.co.jp
Keywords:
This marks the first implementation case of the N.mobi smart charging plan within the NTT Group. REXEV's smart charging system, supporting 8 EVs, commenced operations on January 22, 2026. Leveraging this opportunity, both companies will strive to expand the sales of smart charging solutions.
■Background of Implementation and REXEV's New Initiatives
As corporate adoption of EVs (Electric Vehicles) accelerates towards achieving a decarbonized society, significant barriers include "increased electricity peaks due to charging," "soaring electricity costs," and "management workload for charging timing."
Previously, REXEV has supported corporate decarbonization primarily through the provision of EV car-sharing systems utilizing its proprietary e-Mobility Management Platform (hereinafter referred to as "eMMP"). However, with the full-scale spread of EVs, the demand for "smartification of charging infrastructure" beyond EV car-sharing has surged.
In response, REXEV is strengthening its offering of "smart charger systems" tailored to EV adoption, consolidating its operational expertise. The implementation of the "N.mobi Smart Charging Plan" at NTT West's Dewamachi Building is a core initiative in this strategy.
■Features of REXEV's Smart Charging System
This system overturns the conventional notion that "chargers should just charge" and provides an environment for easily and optimally charging installed EVs. It supports the international standard communication protocol OCPP (Open Charge Point Protocol), enabling direct control of commercially available smart chargers from REXEV's cloud system.
[System Configuration Diagram]
*Chargers with OCPP can easily connect to our cloud system regardless of vehicle model or smart charger manufacturer, enabling various energy management functions.
1. "Economical Automatic Charging" Based on Electricity Prices and Usage
The system automatically controls charging to avoid exceeding the facility's contracted power capacity, thus preventing high electricity bills due to demand surges. It can also link with electricity market prices to automatically select and charge during off-peak hours, reducing electricity costs without burdening staff. (Note: Approximately 20% reduction in charging electricity costs has been achieved through implementation).
2. "Optimized Charging Control" Linked with Vehicle Reservations
By integrating with vehicle management systems, the system automatically secures the necessary amount of electricity according to usage reservations. This eliminates the anxiety of not having a charged vehicle when needed and maintains optimal charge levels through a proprietary usage prediction system. If a vehicle reservation system is already in place, a system that predicts vehicle usage and performs optimal charging is also available, allowing for flexible service design according to customer needs.
3. "Clean Charging" Enhancing Environmental Value
It is possible to shift charging to times when solar power generation is high, by predicting solar output and electricity demand. By prioritizing charging with renewable energy over electricity derived from fossil fuels, decarbonization is accelerated.
*This feature is applicable only when solar power generation facilities are available.
4. Service Available for Existing Chargers
If chargers compatible with REXEV's eMMP are already installed, the service can be utilized without installing new chargers.
*The N.mobi Smart Charging Plan implemented at NTT West's Dewamachi Building utilizes existing chargers for functions such as peak power suppression control and smart charging based on predicted vehicle usage. The services used can be flexibly selected according to the customer's situation.
■Future Outlook
Starting with this project, REXEV will further deepen its collaboration with NTT Business Solutions and vigorously promote the widespread adoption of "smart charging" through system OEM provision. REXEV aims to comprehensively solve the EV operational challenges faced by companies, contributing to the realization of a sustainable society and the promotion of EV utilization.
■Contact Information
REXEV Inc. Public Relations
Tel: 03-3525-8008 E-mail: info@rexev.co.jp
Keywords:
FAQ
What are the benefits of REXEV's smart charging system?
Benefits include peak power suppression, electricity cost reduction (approx. 20% achieved), elimination of charging anxiety, and promotion of renewable energy use. It also helps reduce operational burden for adopting companies.
What is the significance of this partnership for the NTT Group?
It marks the first smart charging plan implementation case for the NTT Group, serving as a stepping stone for promoting decarbonization and developing new services. Collaboration leveraging REXEV's technology and NTT's network is anticipated.
What kind of companies is this system suitable for?
It is suitable for companies and municipalities advancing EV adoption, those aiming to improve charging infrastructure costs and management efficiency, and companies seeking to promote renewable energy utilization.