Tech­ni­cal Advisory and Due Dili­gence

Improve the per­for­mance and safety of your invest­ment with our tech­ni­cal advisory. Get advice from our PV experts.

Inde­pen­dent con­sul­ting and sroblem solving - from the planning phase up to the sale of a PV plant

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Engi­nee­ring & Con­struc­tion Services
Tech­ni­cal Due ­­Dili­gence
Specific Solu­ti­ons

Engi­nee­ring & Con­struc­tion Services

The design and con­struc­tion phase sets the foun­da­ti­on for the per­for­mance and the tech­ni­cal avai­la­bi­li­ty of your PV-plant. Due to our expe­ri­ence in O&M, green­tech can advice you to achieve the best possible plant design and avoid mistakes in the early stages of your project with the aim of high per­for­mance, low failure rates and reduced main­ten­an­ce costs.

Planning Phase

Tech­ni­cal Advisory for an optimal design and con­struc­tion of your pho­to­vol­taic plant.

Design Review

  • Analysis of elec­tri­cal and mecha­ni­cal plant design
  • Com­pon­ents eva­lua­ti­on, inverter con­fi­gu­ra­ti­ons, safety concept
  • Com­pa­ri­son with regu­la­ti­ons & best practice engi­nee­ring

Yield Assess­ment

  • Review of existing yield assess­ment
  • Site specific irra­dia­ti­on and yield assess­ment study

Con­struc­tion Phase

Quality insuran­ce by greentech’s PV-Experts

Con­struc­tion Super­vi­si­on

  • Review scope of works
  • Site super­vi­si­on to secure con­struc­tion accord­ing to plan and conform to industry stan­dards


  • Tech­ni­cal assess­ment and testing after con­struc­tion
  • Review of as-built and com­mis­sio­ning docu­men­ta­ti­on
  • Punch list setup and manage­ment
  • Pro­vi­sio­nal & Final Accep­tan­ce support

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Asset Assess­ment

Asses­sing the tech­ni­cal con­di­ti­on of your PV-asset enables you to make the right decisi­ons in terms of eva­lua­ting the quality of work by the EPC or O&M provider. But also before inte­gra­ting a new PV-plant into your port­fo­lio, green­tech supports you with pro­fes­sio­nal asset assess­ment in any chal­len­ge to come.

Per­for­mance Analysis

  • In-depth analysis of his­to­ri­cal yield and irra­dia­ti­on data
  • Specific per­for­mance tests for Per­for­mance Ratio & Tech­ni­cal Avai­la­bi­li­ty
  • Eva­lua­ti­on of the O&M quality, reports and obli­ga­ti­ons

Tech­ni­cal Due Dili­gence

  • Inspec­tion and testing of all relevant systems and com­pon­ents regar­ding site specific design, norms and regu­la­ti­ons
  • Docu­men­ta­ti­on of security- and yield-related issues
  • Detailed report (punch list) and recom­men­da­ti­ons

Gua­ran­tee & Warranty

  • Review of Tech­ni­cal Avai­la­bi­li­ty and Per­for­mance Ratio
  • General con­struc­tion and main­ten­an­ce quality
  • Specific on-site tests

Dammage App­rai­sal

  • Eva­lua­ti­on of damage and iden­ti­fi­ca­ti­on of root cause
  • Damage assess­ment & delivery of tech­ni­cal solution and costing
  • Manage­ment of insuran­ce or warranty process

Indi­vi­du­al Solu­ti­ons for your Pho­to­vol­taic Plant

Depen­ding on plant design, age and other factors, dif­fe­rent ques­ti­ons besides the day to day O&M work can occur. Detailed mea­su­rements and inspec­tions draw a holistic picture of the tech­ni­cal con­di­ti­on of your PV-plant and the root causes of poten­ti­al issues.

PID Check

  • Analysis of system con­fi­gu­ra­ti­on con­cer­ning PID related issues
  • On-site PID testing and per­for­mance analysis
  • Design and imple­men­ta­ti­on of coun­ter­ac­tions


  • Module analysis by IV-curve-, EL- and flash-testing
  • DC string-testing, AC cable mea­su­rements
  • Testing of pro­tec­tive devices

Ther­mo­gra­phic Inspec­tion

  • Ther­mo­gra­phic inspec­tion of specific parts or the complete plant
  • Iden­ti­fi­ca­ti­on of defects and issues on module level
  • Deve­lop­ment of tech­ni­cal solu­ti­ons
  • Economic eva­lua­ti­on of cor­rec­tive main­ten­an­ce works

Inde­pen­dent Sensor Stations

  • High pre­cisi­on device to measure irra­dia­ti­on
  • Smart inte­gra­ti­on of irra­dia­ti­on data for further analysis
  • Reliable data through inde­pen­dent power supply and data transfer

Power Trading

  • Review of docu­men­ta­ti­on and basis for decision making
  • Site upgrade for remote control
  • Ope­ra­tio­nal imple­men­ta­ti­on

Warranty Manage­ment

  • Con­sul­ting in warranty & gua­ran­tee choices
  • Advisory for cor­rec­tive main­ten­an­ce & repairs
  • Warranty and insuran­ce claims

Pro­duc­tion Otimi­sa­ti­on

  • Analysis of his­to­ri­cal irra­dia­ti­on and per­for­mance data
  • Iden­ti­fi­ca­ti­on of root cause and design of solution
  • Imple­men­ta­ti­on and quality control

Land­s­cape Manage­ment

  • Mowing and mulching ope­ra­ti­ons
  • Trimming of inverter and trans­for­mer areas
  • Mechanic and manual mowing

Module Cleaning

    • Cleaning and removal of soiling of module area
    • Higher yield through clean modules
    • Visual inspec­tion

Security Concepts

  • Design and imple­men­ta­ti­on of effec­tive plant security concepts
  • Cyber security solu­ti­ons
  • Ensuring con­for­mi­ty to insuran­ce requi­re­ments

Would you like indi­vi­du­al advice by our PV-experts?