Endangered power plants

• 

  97%

  • 97% of all power plants in Korea are small and medium-sized with capacity of less than 300kW.
  • Power plants without professional O&M services
• 

  49%

  • Power plants lacking post-maintenance due to the modules and bankruptcy of contractors
  • The test results by Germany’s TUV-Rheinland show that approximately 49% of installed modules have issues in the long-term performance guarantee

Types of hidden module defects

• 
  Damage inside modules
• 
  Modules with reduced efficiency
• 
  Burnt-out internal terminals
• 
  External issues of unknown cause

Technical due diligence is recommended to the following.

• 

  Those who are concerned about lower energy output
  compared to nearby power plants or expected outcome

• 

  Those who require an overall diagnosis
  before/after various warranty periods for defects

• 

  Those who require a system status diagnosis
  before operating a new plant or after acquiring an existing plant

BACKGROUND

• 

  Professional manufacturer

  • 20 years’ know-how in solar energy
  • Production and partial repair of solar power modules
  • Operation of professional research facilities and organizations
• 

  Operation and maintenance (O&M) capability

  • Current maintenance capacity modified to 338.85 MW
  • Accumulated O&M data
  • Actual data-based energy output analysis
• 

  Visiting service

  • Analysis of past energy output (As is)
  • Estimation of future energy output (To be)
  • Proposal of improvement direction for energy output

Technical due diligence performance

• We find and improve the cause of hidden loss in energy output to provide more stable and improved returns on power generation.
• Total analysis of modules, systems, structures, sites, etc. based on the operation and maintenance (O&M) know-how of Korea's largest O&M company
  ※ It is a subsidiary of S-Energy Co., Ltd. with more than 20 years’ history based on outstanding solar module manufacturing and analysis technology.
• Provides module precision analysis services in accordance with the IEC 61215 regulations

• 

  Site review

  3D mapping

• 

  Material and equipment review

  IR drone, Portable EL, Lab test

• 

  Energy output review

  Simulation & real raw data analysis

• 

  Solution provision

  Re-powering / renovation

Comparison to the services of other companies

Diagnostic category	other companies	(PV + ESS)
Diagnostic category	V	V
Visual inspection of plants	V	V
Determination of adequacy of design and construction	V	V
Visual inspection of plants	V	V
Visual inspection of connector boards	V	V
Voltage/Current measurement for connector boards	V	V
Inverter operation and installation status	V	V
Inverter system diagnosis	V	V
Diagnosis of electrical performance of modules		V
Measurement through thermal imaging cameras		V
Estimation of energy output & analysis of potential loss		V
Technical support for maintenance		V
Presentation of measures to improve energy output		V
Experimental analysis based on international electrotechnical standards (specialized labs and testing equipment in operation)		V
Verification of defects in major products		V
Verification of module components and scope of product repairs		V
Power analysis		V
Analysis of module and array output		V
Shading element analysis		V
Amount of insolation forecast data		V
Capable of diagnosing PV+ESS power plants		V
Inspection of civil engineering status (additional matters)		V
Drone shooting of thermal images		V