永輝商事

Manufacture and sale of solar modules

solar module manufacture and sales

About the panel

Photovoltaic module
Photovoltaic module
The JMP series is a highly reliable solar cell module made of highly efficient polycrystalline cell. We conduct a rigorous quality control system and evaluation test of various test equipment and have cleared the world’s highest quality standards.
In addition, we will realize long-term reliable power generation with long-term output guarantee for 25 years and fulfilling domestic support system.
Characteristics of our products
Characteristics of our products
Maximum output (Pm)
  • 250W
  • 255W
  • 260W
Maximum output operating current(Ipm)
  • 7.96A
  • 8.09A
  • 8.17A
Maximum output operating current(Vpm)
  • 31.41V
  • 31.56V
  • 31.83V
Short circuit current(Isc)
  • 8.45A
  • 8.63A
  • 8.72A
Open circuit voltage(Voc)
  • 37.53V
  • 8.63A
  • 8.72A
Module conversion efficiency(Eff)
  • 15.47%
  • 15.80%
  • 16.10%
※Reference condition (STC): Radiation irradiation degree 1000 W / m 2, AM 1.5, module temperature 25 ° C.
Long-term reliable quality assurance system
Long-term reliable quality assurance system
Long-term reliable quality assurance system
When the output of the solar cell module drops by 10% or more in 10 years from the minimum allowable value within the intersecting range of the nominal maximum output, or when it drops by 20% or more in 25 years, solar cell module addition, repair or I will exchange it.

About independent power supply

About independent power supply
About independent power supply

Benefits of home-use solar power generation

Save electricity fee with self-generated electricity!

Electricity generated during the day can be used directly at home, so electricity bills can be saved. Also, electricity left over at home during the day can be sold to a power company. Electricity is traded automatically, so troublesome operations and procedures are not necessary.

Trends in solar generation electricity consumption and electricity consumption

Save electricity fee with self-generated electricity!
Osaka prefecture panel registration business operator
Save electricity fee with self-generated electricity!
· The solar panel installation promotion enlightenment project is to promote the solar photovoltaic system manufacturer, the construction store and the dealer to desirable behavior so that the citizens can safely install photovoltaic modules on the existing housing roof, It is a project aimed at disseminating voluntary solar battery power generation facilities installation by citizens by registering and publishing what meets the requirements specified by the prefecture and cooperating with municipalities.
· Eiki Shoji is certified as a solar panel registered business operator in Osaka prefecture.

Industrial solar power generation

Construction and support of solar power stations

We support everything from selection of land to design, various applications, operation, maintenance, power sale from solar power generation business

1. Selection, design, construction of land
Nagaku Shoji, who has a lot of experience in mega solar construction, will select the land with professional eyes and will provide reliable · optimum design and construction.
2. Various applications
We will hand over various applications that customers feel troublesome. We will make all necessary applications such as electric power companies and government agencies.
3. Operation · Secure after-sales service
With a specialized engineer, we have established a system that can respond instantly to any trouble. In addition, we have many options such as periodic maintenance and insurance.
Installation of photovoltaic power plant in public facilities
· Installation of photovoltaic power plant in public facilities such as Osaka prefecture, Sakai city, Fujieda city, Shizuoka prefecture
· Establishment at the roof of school, prefectural housing, waterworks bureau, public hall, installation on public road road, etc.
Installation history to 18 locations
· Clear the harsh conditions unique to public facilities.

Introduction of inspection equipment

In addition to the above periodic inspections, we also conduct inspections using the following inspection equipment “Solar power generation array tester SOKODES”. We also sell equipment. Please inquire in detail.

Photovoltaic array testerSOKODES
Photovoltaic array tester Characteristics of SOKODES
It is an inspection device that can understand the cable and the interior of the module connecting the solar cell module and the degree of deterioration. By discovering disconnection inside the module at an early stage, it is possible to reduce power generation loss and to prevent fire caused by ignition of the module. It is a portable type that is convenient to carry and can inspect at night. This equipment (partly) utilizes the results of “New Energy Venture Technology Innovation Project (solar power generation)” entrusted by the New Energy and Industrial Technology Development Organization (NEDO).
Main functions of SOKODES
Detection of disconnection in the module Detection of a module in which a fault such as disconnection of the interconnector or the bus bar, peeling of the solder, burning or the like has occurred
· Detection of disconnection between modules Detection of defects of connectors such as disconnection of connection cables between the modules, connection failure, etc. – · Estimation of deterioration situation Estimate the degree of deterioration of module from the change of measured resistance value by periodically measuring it
· Supports separation of causes It is possible to judge whether the failure factor is a failure caused by a high resistance (disconnection) in a situation where apparent decrease in power generation amount is observed, and classification as failure due to leakage current etc. Possible
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