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Presents

PSI Ratings for PV Modules
Our Mission
 Our mission is to answer
  ESSENTIAL QUESTIONS…
    What is the best PV module for my application?
    Where can I get an unbiased comparison
     of PV modules?
    Which PV module produces the most energy?


   …and provide online resources for PV module
 installers, developers, financiers and investors.

         www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org   2
It’s About Time

  The PV module marketplace is littered
   with brochures and datasheets;
   drawing comparisons and making good
   decisions is complicated…



                                               …The Principal Solar
                                         Institute has the solution.


      www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org   3
Module Rating

  The Principal Solar Institute has created
   the first comprehensive PV module
   Rating Standard.


          The PSI Rating is based on PV module
              25 year Lifetime Energy Production − LEP.



      www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org   4
Seven Essential Characteristics
                                               Actual Tested Maximum
   Power at Low Irradiance to                  Power vs. Advertised
Power at High Irradiance Ratio                                                     Temperature
                                                                                   Coefficient at Maximum Power


   Total Area                                                                                     Nominal Operating
   Efficiency                                                                                      Cell Temperature
                                                                                                            (NOCT)

                                                                                                    Annual Power
Negative Power                                                                                         Reduction
Tolerance


                  Impact on Lifetime Energy Production
                      is the basis of the PSI Rating
                www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org      5
PSI Rating Example
 We analyze published data for over ten
  thousand PV modules, calculate the LEP
  and generate the PSI Rating.
                        Model  PSI   Percentile
   Manufacturer
                       Number Rating   Rank
  SunPower             SPR-34…      11.2        1.00

  Ningbo Ulica         UL-29…       10.6        1.00
                                                                 This sample from the PSI
                                                                 Rating database shows how
  GCL-Poly (Suzhou)    GCL-P6…       9.9        1.00
                                                                 combined characteristics are
  Ningbo Ulica         UL-28…        9.9        1.00             used to rate different PV
  SunPower             SPR-39…       9.8        1.00             modules.
  Sanyo Electric       HIT-N2...     9.4        0.99

  Sanyo Electric       HIP-21…       9.2        0.99




             www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org   6
Rapidly Changing Marketplace

 PSI Ratings are “certified” for modules where our database has all seven
   performance characteristics of PV modules. For modules denoted with
   an “*”, we use estimated values for one or more characteristics. More
   PV modules will become “certified” as PSI compiles accurate test data.

 Follow us on Twitter @PrincipalSolar for updates. PV Module
   manufacturers can contact us at info@principalsolarinstitute.org to
   provide data for PV modules not yet listed or not certified.

 PSI is working with TUV Rheinland, the world’s leading solar module
   testing lab, to incorporate accelerated testing data into the PSI
   Ratings. An eighth characteristic – Failure Rate – will be included in our
   next release.

          www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org
Concentrating the Power of Solar
 Focusing the power of experts from across
  the solar power industry, including
  manufacturers, scientists, installers,
  developers and financiers, to forge an
  unbiased and comprehensive PV module
  rating standard—

                                                   —The PSI Rating


        www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org   8
Thank you.

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PSI Ratings from the Principal Solar Institute

  • 2. Our Mission  Our mission is to answer ESSENTIAL QUESTIONS…  What is the best PV module for my application?  Where can I get an unbiased comparison of PV modules?  Which PV module produces the most energy? …and provide online resources for PV module installers, developers, financiers and investors. www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org 2
  • 3. It’s About Time  The PV module marketplace is littered with brochures and datasheets; drawing comparisons and making good decisions is complicated… …The Principal Solar Institute has the solution. www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org 3
  • 4. Module Rating  The Principal Solar Institute has created the first comprehensive PV module Rating Standard.  The PSI Rating is based on PV module 25 year Lifetime Energy Production − LEP. www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org 4
  • 5. Seven Essential Characteristics Actual Tested Maximum Power at Low Irradiance to Power vs. Advertised Power at High Irradiance Ratio Temperature Coefficient at Maximum Power Total Area Nominal Operating Efficiency Cell Temperature (NOCT) Annual Power Negative Power Reduction Tolerance  Impact on Lifetime Energy Production is the basis of the PSI Rating www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org 5
  • 6. PSI Rating Example  We analyze published data for over ten thousand PV modules, calculate the LEP and generate the PSI Rating. Model PSI Percentile Manufacturer Number Rating Rank SunPower SPR-34… 11.2 1.00 Ningbo Ulica UL-29… 10.6 1.00 This sample from the PSI Rating database shows how GCL-Poly (Suzhou) GCL-P6… 9.9 1.00 combined characteristics are Ningbo Ulica UL-28… 9.9 1.00 used to rate different PV SunPower SPR-39… 9.8 1.00 modules. Sanyo Electric HIT-N2... 9.4 0.99 Sanyo Electric HIP-21… 9.2 0.99 www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org 6
  • 7. Rapidly Changing Marketplace  PSI Ratings are “certified” for modules where our database has all seven performance characteristics of PV modules. For modules denoted with an “*”, we use estimated values for one or more characteristics. More PV modules will become “certified” as PSI compiles accurate test data.  Follow us on Twitter @PrincipalSolar for updates. PV Module manufacturers can contact us at info@principalsolarinstitute.org to provide data for PV modules not yet listed or not certified.  PSI is working with TUV Rheinland, the world’s leading solar module testing lab, to incorporate accelerated testing data into the PSI Ratings. An eighth characteristic – Failure Rate – will be included in our next release. www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org
  • 8. Concentrating the Power of Solar  Focusing the power of experts from across the solar power industry, including manufacturers, scientists, installers, developers and financiers, to forge an unbiased and comprehensive PV module rating standard— —The PSI Rating www.principalsolarinstitute.org | © Principal Solar Institute | info@principalsolarinstitute.org 8