Collaboration Begins to Commercialize Off-Grid Power Sharing Service for Construction Sites Using Mobile Power Supply Vehicle 'MESTA Gen'
Key facts
- Collaboration Begins to Commercialize Off-Grid Power Sharing Service for Construction Sites Using Mobile Power Supply Vehicle 'MESTA Gen'
- Nippon Car Solutions, Bell Energy, Komatsu, and Komatsu Customer Support Japan (KCSJ) have launched a collaboration to commercialize an off-grid power sharing service using the mobile power supply vehicle 'MESTA Gen' to address power supply challenges at construction and civil engineering sites. Full-scale service launch is targeted by fiscal 2028.
- Source: PR Times
- Date: June 16, 2026
Direct answer
Nippon Car Solutions, Bell Energy, Komatsu, and Komatsu Customer Support Japan (KCSJ) have launched a collaboration to commercialize an off-grid power sharing service using the mobile power supply vehicle 'MESTA Gen' to address power supply challenges at construction and civil engineering sites. Full-scale service launch is targeted by fiscal 2028.
- Citation
- Collaboration Begins to Commercialize Off-Grid Power Sharing Service for Construction Sites Using Mobile Power Supply Vehicle 'MESTA Gen' (June 16, 2026), PR Times
- Source
- PR Times
- Date
- June 16, 2026
Nippon Car Solutions, Bell Energy, Komatsu, and Komatsu Customer Support Japan (KCSJ) have launched a collaboration to commercialize an off-grid power sharing service using the mobile power supply vehicle 'MESTA Gen' to address power supply challenges at construction and civil engineering sites. Full-scale service launch is targeted by fiscal 2028.
📋 Article Processing Timeline
- 📰 Published: June 16, 2026 at 22:00
- 🔍 Collected: June 16, 2026 at 17:18
- 🤖 AI Analyzed: June 16, 2026 at 19:00 (1h 42m after Collected)
Nippon Car Solutions Co., Ltd. (President: Katsuki Nagata, hereinafter "NCS"), Bell Energy Co., Ltd. (Chairman: Katsuzo Suzuki, hereinafter "Bell Energy"), Komatsu (President: Takuya Imaichi), and Komatsu's 100% subsidiary Komatsu Customer Support Japan Co., Ltd. (President: Yuji Yoshizawa, hereinafter "KCSJ") have launched a collaboration to commercialize a shared off-grid power supply service using the mobile power supply vehicle "MESTA Gen" to address power supply challenges at construction and civil engineering sites.
Through this collaboration, the four companies will work to build a system that flexibly supplies power to electric construction machinery and tools directly at job sites. By fiscal 2028, they aim to commercialize a shared off-grid power service using the leasing, rental, and on-site power supply of "MESTA Gen" for customers using Komatsu's electric construction machinery across Japan.
["MESTA Gen" (left) and electric construction machinery (right)]
At construction sites, the adoption of electric construction machinery and tools is advancing to achieve carbon neutrality. However, many sites face challenges in securing grid connections or temporary power sources, and frequent changes in work locations make it difficult to ensure stable power supply. Moreover, engine-powered generators are still commonly used, posing a barrier to achieving zero emissions across entire sites.
Against this backdrop, Bell Energy and Komatsu began verification tests in December 2024, using the mobile power supply vehicle "MESTA Gen" to charge battery-powered electric hydraulic excavators. The results confirmed efficient power supply even at sites without power infrastructure or those requiring frequent relocation. Furthermore, they have verified that "MESTA Gen" can supply power to six models of battery-powered electric hydraulic excavators certified as GX construction machinery by Japan's Ministry of Land, Infrastructure, Transport and Tourism (*1).
Building on these verification results, this collaboration aims to develop an accessible service for a broader customer base, reducing initial burdens and improving usability. To achieve this, NCS, with expertise in vehicle leasing and EV-related services; Bell Energy, responsible for the development, sales, and service of "MESTA Gen"; KCSJ, with a network for sales, rental, and service of electric construction machinery; and Komatsu, responsible for the planning, development, and manufacturing of electric machinery, will collaborate.
The primary roles of each company are as follows:
Company
Main Role
Bell Energy
Sales of large-capacity power units mounted on "MESTA Gen", EV integration, vehicle registration and inspection support, and service and maintenance of power units
NCS
Procurement of EVs equipped with "MESTA Gen", ownership of EV power supply vehicles, leasing to KCSJ and others, and service and maintenance of EVs
KCSJ
Planning and operation of customer-facing power supply services using "MESTA Gen", sales, rental, and service of electric construction machinery, and selection and operational support for demonstration sites
Komatsu
Planning, development, and manufacturing of electric construction machinery, technical support for power supply verification, and exploration of application and model expansion to promote on-site adoption of electric machinery
[Commercial flow and service model of the mobile power supply vehicle]
Through this initiative, the companies aim to create an environment where electric construction machinery can be confidently introduced and utilized even at sites with power constraints, contributing to the achievement of carbon neutrality at customer sites.
[Charging a battery-powered mini excavator PC30E-6 (left) using "MESTA Gen" (right) and a charging unit (center)]
*1: "Bell Energy and Komatsu Demonstrate Power Supply from Mobile Power Vehicle 'MESTA Gen' to Six Models of Battery-Powered Electric Hydraulic Excavators as Part of Zero-Emission Power Solution Initiative for Expanding On-Site Use of GX Construction Machinery" | Newsroom | Komatsu Corporate Website
End
Through this collaboration, the four companies will work to build a system that flexibly supplies power to electric construction machinery and tools directly at job sites. By fiscal 2028, they aim to commercialize a shared off-grid power service using the leasing, rental, and on-site power supply of "MESTA Gen" for customers using Komatsu's electric construction machinery across Japan.
["MESTA Gen" (left) and electric construction machinery (right)]
At construction sites, the adoption of electric construction machinery and tools is advancing to achieve carbon neutrality. However, many sites face challenges in securing grid connections or temporary power sources, and frequent changes in work locations make it difficult to ensure stable power supply. Moreover, engine-powered generators are still commonly used, posing a barrier to achieving zero emissions across entire sites.
Against this backdrop, Bell Energy and Komatsu began verification tests in December 2024, using the mobile power supply vehicle "MESTA Gen" to charge battery-powered electric hydraulic excavators. The results confirmed efficient power supply even at sites without power infrastructure or those requiring frequent relocation. Furthermore, they have verified that "MESTA Gen" can supply power to six models of battery-powered electric hydraulic excavators certified as GX construction machinery by Japan's Ministry of Land, Infrastructure, Transport and Tourism (*1).
Building on these verification results, this collaboration aims to develop an accessible service for a broader customer base, reducing initial burdens and improving usability. To achieve this, NCS, with expertise in vehicle leasing and EV-related services; Bell Energy, responsible for the development, sales, and service of "MESTA Gen"; KCSJ, with a network for sales, rental, and service of electric construction machinery; and Komatsu, responsible for the planning, development, and manufacturing of electric machinery, will collaborate.
The primary roles of each company are as follows:
Company
Main Role
Bell Energy
Sales of large-capacity power units mounted on "MESTA Gen", EV integration, vehicle registration and inspection support, and service and maintenance of power units
NCS
Procurement of EVs equipped with "MESTA Gen", ownership of EV power supply vehicles, leasing to KCSJ and others, and service and maintenance of EVs
KCSJ
Planning and operation of customer-facing power supply services using "MESTA Gen", sales, rental, and service of electric construction machinery, and selection and operational support for demonstration sites
Komatsu
Planning, development, and manufacturing of electric construction machinery, technical support for power supply verification, and exploration of application and model expansion to promote on-site adoption of electric machinery
[Commercial flow and service model of the mobile power supply vehicle]
Through this initiative, the companies aim to create an environment where electric construction machinery can be confidently introduced and utilized even at sites with power constraints, contributing to the achievement of carbon neutrality at customer sites.
[Charging a battery-powered mini excavator PC30E-6 (left) using "MESTA Gen" (right) and a charging unit (center)]
*1: "Bell Energy and Komatsu Demonstrate Power Supply from Mobile Power Vehicle 'MESTA Gen' to Six Models of Battery-Powered Electric Hydraulic Excavators as Part of Zero-Emission Power Solution Initiative for Expanding On-Site Use of GX Construction Machinery" | Newsroom | Komatsu Corporate Website
End
FAQ
What is the 'MESTA Gen' vehicle?
The 'MESTA Gen' is a mobile power supply vehicle developed by Bell Energy, equipped with large-capacity batteries to provide off-grid power to electric construction machinery on-site.
When will this service launch?
The full commercialization is targeted by fiscal 2028, focusing on Komatsu's electric construction machinery customers.
Why is off-grid power important for construction sites?
Many sites lack grid access or require frequent relocation, making stable power difficult and leading to reliance on engine generators, hindering zero-emission goals.
What are the roles of the four collaborating companies?
Bell Energy develops and maintains power units; NCS procures and leases EVs; KCSJ plans and operates services; Komatsu handles machinery development and technical support.
What environmental benefits does this service aim for?
By reducing engine generator use, it enables fully zero-emission operation of electric machinery, contributing to carbon neutrality at construction sites.