Mega Solar Business


Making full use of AI data analysis and remote monitoring, facilities are always kept in optimal condition

Operation and Maintenance are extremely important duties, with the primary purpose being to quickly detect any irregularities within the facility and take any countermeasures required. The secondary purpose is to analyze long term electrical generation quantities and perform inspections and maintenance on a regular basis, before any problems may occur.
Based on years of experience and knowledge, with the use of the latest technologies, remote monitoring, strings monitoring, remote I-V curve analysis, the use of drones for infrared analysis of panels, AI analysis of various data, and the projection of the quantity of electrical generation are performed while reduction of generation quantity and loss of performance are prevented in advance, providing quality O&M in order to protect the interests of the investors.

Strengths of Smart Solar O&M

  • Sizable reduction in inspection time through the use of AIs to analyze video data gathered through drone ultraviolet inspections
  • Quick response to any anomalies, and the knowledge and know-how for problem-solving
  • A comprehensively viewable monitoring screen using in-house development systems with scalability
  • Improving business efficiency, incorporating technology and equipment capable of detailed analysis
  • Remote monitoring screen (string monitor), customized, taking O&M into consideration
  • By improving remote monitoring quality, cost reduction and detection of details not visible to the human eye become possible
  • Generally, centered around the know-how of the chief electrical engineer, with expertise in proximity to electrical receivers and transformers. Our company, including panels and PCS are capable of full spec support


Concerning maintenance and inspection management duties

Operation Maintenance Business

Using a remote monitoring device to measure power generation, daily management of power quantity and equipment will take place.
Also, when an alert is received or an emergency response is required, primary response will take place within 2 hours. After that, permanent remedies may be sought based on discussions with the equipment manufacturers.

Remote Monitoring System

Monitoring Power Generation

  • Remote monitoring system, supported 24 hours a day, 365 days a year
  • Amount of power generated (Monitor PR level)

Equipment Alarm Monitoring

  • Equipment alarm monitoring
  • Monitoring facility operation status

Malfunction/Emergency Disaster/On Site Support

  • Emergency on-site service for malfunctions/repair
  • Confirmation of damages/primary support in emergency situations such as typhoons and heavy rain (temporary repairs)

Equipment Alarm List (Sample list of monitored items)

  • Lack of inverter voltage
  • AC voltage high
  • DC current high
  • AC current high
  • Inverter voltage high
  • DC reverse current
  • DC high voltage abnormality
  • PCS board temperature abnormality (major malfunction)
  • DC board temperature abnormality (major malfunction)
  • Reactive coil temperature abnormality (major malfunction)
  • Reactive coil temperature abnormality (major malfunction)
  • Transformer temperature abnormality
  • Air conditioner abnormality
  • Fire alarm warning
  • Independent operation not established
  • Analog input 4 abnormality
  • Analog input 3 abnormality
  • Analog input 2 abnormality
  • Analog input 1 abnormality
  • External connection protection 2
  • DC ground abnormality
  • Synchronization signal abnormality
  • Control power supply abnormality (VP24A/VP5A)
  • Control power supply abnormality (VP24BB)
  • Control power supply abnormality
  • Control power supply abnormality (VP15/VN15)
  • POD communication error
  • Subcycle setting abnormality
  • Control unit abnormality (minor malfunction)
  • Control unit abnormality (major malfunction)
  • INV momentary overcurrent
  • Electromagnetic contact interception abnormality (MC11)
  • INV1 fuse interruption
  • INV1IGBT protection operation
  • INV1 temperature abnormality (major malfunction)
  • INV1 temperature abnormality (caution)
  • INV1 interchange overcurrent
  • Electromagnetic contact injector abnormality (MC11)
  • INV2 momentary overcurrent
  • Electromagnetic contact interrupter abnormality (MC21)
  • INV2 fuse interruption
  • INV2IGBT protection operation
  • INV2 temperature abnormality (major malfunction)
  • INV2 temperature abnormality (caution)
  • INV2 AC overcurrent
  • Electromagnetic contact injector abnormality (MC21)
  • Balancer momentary overcurrent
  • Balancer fuse interruption
  • Balancer IGBT protection operation
  • Balancer temperature abnormality (major malfunction)
  • PCS board FAN abnormality
  • Balancer temperature abnormality (caution)
  • Balancer AC overcurrent
  • DC board FAN abnormality

Maintenance and Inspection Management Business

Prevent power generation loss with close inspections in order to catch any problems which could not be identified by remote monitoring. Also, confirming the status of facilities near to the power station and in consideration for the outlying area, actions including the inspection of access routes to the power station for any potential problems, inspections of borders with neighboring properties (fences, cliffs, roads, etc.), verification of sewage and possible airborne materials are performed.

Selection of chief electrical engineer
  • Selecting our chief electrical engineer or the consignment of security control operations.
  • Exacting cooperative duties will be performed.
Power Station Management

Security Surveillance

  • Remote security system, supported 24 hours a day, 365 days a year (Such as SECOM)


  • On-site weeding and weed prevention (such as the application of herbicides and removal of dead leaves)
Scheduled Inspections

Monthly/Annual Inspections

  • IV curve characteristic measurement/Strings inspection/Per panel function inspection

Function Measurement

  • Power conditioner and connection box, confirm that the batteries are not malfunctioning

Visual and Touch Inspection

  • Search for cracks in the modules and warped platforms by looking at and feeling the surfaces

Option Service

In performing site management, risks from natural disasters and problems that are discovered through inspection duties will be dealt with immediately.

Scheduled Maintenance

Infrared Inspection by Drone

  • Infrared inspections performed by drones at large scale power stations

Repairs and Renovations at Facilities

  • Repairing equipment and fixtures within facilities
  • Renovations

Dredging Operations

  • Dredging operations at drainage adjustment reservoirs
  • Sediment removal, etc.

Panel Cleaning

  • Cleaning sand dust and bird droppings off of panels

Snow removal

  • Removing snow in regions with heavy snowfall or irregular weather conditions