{"id":3304,"date":"2026-01-28T09:23:03","date_gmt":"2026-01-28T09:23:03","guid":{"rendered":"https:\/\/www.ingegneriadelsole.it\/technical-due-diligence\/"},"modified":"2026-01-31T13:45:22","modified_gmt":"2026-01-31T13:45:22","slug":"technical-due-diligence","status":"publish","type":"page","link":"https:\/\/www.ingegneriadelsole.it\/en\/technical-due-diligence\/","title":{"rendered":"Technical Due Diligence"},"content":{"rendered":"

Technical Due Diligence<\/h1><\/div>
    \n
  • Here is an excerpt of the main activities performed by Ingegneria del Sole during a typical TECHNICAL DUE DILIGENCE activity.<\/span><\/li>\n<\/ul>\n

    PHASE A – DOCUMENTARY REVIEW<\/p>\n

    <\/span><\/b>
    \n1. Verification of the compliance of the executive design and all AS-BUILT technical documents with current industry regulations;<\/span><\/p>\n<\/p>\n

    2. Verification of the correct execution of the procedures to be carried out annually with the relevant authorities (AEEGSI, Customs and Monopolies Agency, GSE, Land Registry Agency);<\/span><\/p>\n<\/p>\n

    3. Verification of the documentation in possession for a possible GSE inspection;<\/span><\/p>\n<\/p>\n

    4. Verification of the generation system’s compliance with the developed economic plans;<\/span>;<\/span><\/p>\n<\/p>\n

    It is understood that Ingegneria del Sole also processes all the procedures necessary for the start-up of the generation plant with the following authorities.<\/span><\/p>\n<\/p>\n

    PHASE B – ON-SITE REVIEW<\/span><\/p>\n<\/p>\n

    5. Detailed visual examination of the following sections:<\/span><\/p>\n<\/p>\n

      \n
    • Plant;<\/span><\/li>\n
    • Civil works;<\/span><\/li>\n
    • Supporting Structures;<\/span><\/li>\n
    • Photovoltaic Modules;<\/span><\/li>\n
    • Electrical Equipment;<\/span><\/li>\n
    • Electrical Substations;<\/span><\/li>\n<\/ul>\n

      Degree of protection of assembled components;<\/span><\/p>\n<\/p>\n

      6. Electrical verification activities without interconnection<\/p>\n<\/p>\n

        \n
      • Checking the electrical connections;<\/span><\/li>\n
      • VVerification of the operating and protection organs;<\/span><\/li>\n
      • Measurement of the short-circuit current of each string, carried out on the parallel panels;<\/span><\/li>\n
      • Checking the earthing connections of organs and components;<\/span><\/li>\n
      • Measurement of the open-circuit voltage of each string, carried out on the parallel panels;<\/span><\/li>\n
      • Ground insulation tests of the strings;<\/span><\/li>\n
      • Checking the quality of the PV module wiring;<\/span><\/li>\n
      • Checking the quality of electrical wiring;<\/span><\/li>\n
      • Insulation tests on LV circuits;<\/span><\/li>\n
      • Check cabin electrical system;<\/span><\/li>\n
      • Check correct installation of LV\/LV and LV\/MV transformers;<\/span><\/li>\n
      • Verification of correspondence of the technical rooms with sector regulations;<\/span><\/li>\n<\/ul>\n

        7. Radiative and Captive Analysis<\/b>
        \nWith the aid of specific instrumentation, the shading index is defined both generated by the orography of the place and by specific elements and by any incorrect inter-row distances;<\/span><\/p>\n<\/p>\n

        8. SAPR monitoring<\/b>
        \nVerification of the state of conservation of the modules and the correspondence between the as-built and the constructed, with the aid, in the case of large fields, of remotely piloted systems for carrying out inspections from above and from otherwise inaccessible filming points;<\/span><\/p>\n<\/p>\n

        9. Sampling analysis of existing irradiance sensor<\/p>\n<\/p>\n

        Sampling of existing irradiation sensors with our class 1 solarimeters calibrated with reference to primary calibrated by Fraunhofer Institute;<\/span><\/p>\n<\/p>\n

        10. IV Curves and Induced Power Thermographic Tests <\/p>\n<\/p>\n

          \n
        • Execution of IV curves in the field in order to define, considering the specific approximations attributable to a field analysis, what performance the installed photovoltaic modules deliver and where necessary, always in the field (in closed rooms or inside our equipped vans) we carry out thermographic tests with induced power supply;<\/span><\/li>\n
        • In case of critical deviations we offer the possibility of carrying out further investigations in the laboratory using IV tests and EL tests;;<\/span><\/li>\n<\/ul>\n

          11. Thermal and Visible Orthomosaics
          <\/b>
          \nVery high resolution orthomosaic of the area on which the photovoltaic system is located.<\/span>
          The same is created starting from a three-dimensional model (point cloud) and Digital Elevation Model with centimeter accuracy thanks to the use of support points (GCP – Ground Control Points) detected in the field with a high precision GNSS satellite antenna.<\/span>
          <\/span>The orthomosaic is georeferenced and scaled.<\/span>
          <\/span>Therefore, if inserted into a GIS software it is therefore measurable in planimetry.<\/span><\/p>\n<\/p>\n

          12. Thermographic analysis of the field on 100% of the installed modules,<\/p>\n<\/p>\n

            \n
          • Carrying out surveys with thermal cameras with high sensor sensitivity and resolutions such as to define every nuance relating to the identification of Hot Spots, moderate and forced Patchwork, PID etc…;<\/span><\/li>\n
          • Development of high resolution radiometric video recordings certifying the evolution of the problem possibly detected in each operating condition; <\/span><\/li>\n
          • Aerial radiometic thermographic inspections;<\/span>\n<\/li>\n<\/ul>\n

            13. Thermographic analysis of inverters, transformers and electrical panels;<\/p>\n<\/p>\n

            14. On-site nocturnal electroluminescence checks;<\/p>\n<\/p>\n

            15. Calculation of PRcc<\/p>\n<\/p>\n

              \n
            • Detection of the PRcc (direct current performance index in accordance with the provisions of the CEI 82-25 standard and its variants) of each individual portion of the field using DC Wattometers (in order to minimize the absolute error compared to the case of use of clamps and multimeters), Solarimeters and PT 100 temperature probes in class 1 (subject to thermographic sampling of the probe application area);<\/span><\/li>\n
            • The PRcc check is performed for all installed String Boxes and\/or MPP channels in the case of string inverters;<\/span><\/li>\n<\/ul>\n

              16. Calculation of PRp and PRe<\/p>\n<\/p>\n

                \n
              • Detection of the PRp and PRe (performance index in power and energy corrected for temperature in accordance with the provisions of the CEI 82-25 standard and its variants) for each individual inverter and\/or MPP channel with the aid of class A network recorders and analyzers, class 1 solarimeters and temperature probes.<\/span><\/li>\n<\/ul>\n

                17. Power Quality Analysis of Inverters<\/p>\n<\/p>\n

                  \n
                • Execution with Class A recorders and analyzers of PQ analysis aimed at identifying any anomaly present in relation to all the typical electrical parameters of an inverter for solar application.
                  \n<\/span><\/li>\n<\/ul>\n

                  18. Verification of the conversion efficiency of the inverters present;<\/p>\n<\/p>\n

                  19. Check correct calibration of the protection systems present (SPI and SPG);<\/p>\n<\/p>\n

                  20. Verification test of correct intervention of the protections and related systems;<\/p>\n

                  21. Verification of the Monitoring and Data Acquisition System;<\/p>\n<\/p>\n

                  22. Verification of the operation and correct sizing of the UPS;<\/p>\n<\/p>\n

                  23. Verification of the correct functioning of energy meters;<\/p>\n<\/p>\n

                  24. Verification of security systems;<\/p>\n<\/p>\n

                  25. CEM and CEMA verification of electrical components;<\/p>\n<\/p>\n

                  PHASE C – PROCESSING OF THE CHECKS CARRIED OUT\n<\/p>\n<\/p>\n

                  24. Development of detailed reports <\/p>\n<\/p>\n

                    \n
                  • Following the execution of phase A and phase B, Ginevra del Sole, after having collected the data collected, prepares a detailed report showing: <\/span><\/li>\n
                  • All measurements performed;<\/span><\/li>\n
                  • Any critical issues detected;<\/span><\/li>\n
                  • Solutions for the implementation of any improvements in order to increase the performance of the system or make it compliant with current regulations where necessary.<\/span><\/li>\n<\/ul>\n<\/div><\/div><\/div><\/div><\/div>
                    <\/span><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":3152,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-3304","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nTechnical Due Diligence - Ingegneria del sole<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ingegneriadelsole.it\/en\/technical-due-diligence\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Technical Due Diligence\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ingegneriadelsole.it\/en\/technical-due-diligence\/\" \/>\n<meta property=\"og:site_name\" content=\"Ingegneria del sole\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ingegneriadelsole\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-31T13:45:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ingegneriadelsole.it\/wp-content\/uploads\/2026\/01\/sede-copia-e1769434946594.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1968\" \/>\n\t<meta property=\"og:image:height\" content=\"945\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.ingegneriadelsole.it\\\/en\\\/technical-due-diligence\\\/\",\"url\":\"https:\\\/\\\/www.ingegneriadelsole.it\\\/en\\\/technical-due-diligence\\\/\",\"name\":\"Technical Due Diligence - 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