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Life Is On I Schneider <br />Electric <br />Option B Solar: Methodology and Savings Summary <br />Schneider Electric employed the "Option B: Retrofit Isolation — All Parameter Measurement" approach as <br />described in the International Performance Measurement and Verification Protocol (IPMVP) when <br />determining the energy savings resulting from the Solar. <br />A full year of PV data was needed in order to compute the Year 1 Solar savings. The period used for Year 1 <br />savings is October 2019 — September 2020. Two months of installation period savings are also included (August <br />— September 2019). Those savings are reported as actual production rather than normalized production. <br />The production and solar irradiance were measured beginning in the Performance Period. A proportional <br />relationship was developed and savings were calculated as the production normalized to a typical year's <br />irradiance. Typical solar irradiance was based on the TMY3 weather data for South Bend, IN. <br />This approach verified the performance characteristics of the PV system but does not take accountability for <br />excess or insufficient solar opportunity. In Year 1 the actual solar irradiance was 1,512 kW/m2 which was <br />greater than the TMY3 irradiance of 1,404 kW/m'. That means the Weather Normalized solar production <br />reported for the purposes of this project is less than the actual production seen in Year 1. <br />Actual vs TMY3 Irradiance Analysis Sample <br />October 1-4, 2019 <br />1000 <br />900 <br />800 <br />700 <br />< 600 <br />E 500 <br />A <br />It <br />400 <br />300 <br />LA <br />AN <br />200 <br />100 <br />0A <br />CP <br />6 <br />CP <br />6• <br />00 00 CP <br />%. )• <br />6 • p <br />00 <br />00 CP CP SP <br />4 O• (6. <br />00 1 <br />E 6 <br />CP 00 00 <br />6 <br />ti• Cti <br />ti <br />ti <br />O\'�° <br />0�\�011�4i, <br />�\3\ryO,y�i <br />14\~Oy� <br />�\a\ryO,y1\�\ryO �d\�Ob\fOy�'y <br />'y0\y\ry011,011 <br />�ti\�011'ti\~O� <br />\ry\�O <br />\�\'00�n\� <br />Date and Time <br />—Actual Irradiance [W/m2] TMY3 Irradiance GHI (W/mA2) <br />