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Page 1 of 2 <br />Date: February 17, 2023 <br />Pat Cruz <br />SUNPOWER CORP <br />51 Rio Robles <br />San Jose, CA, 95134, US <br />pat.cruz@sunpowercorp.com <br />Subject: AC Modules Compliance to UL 1741 SUPPLEMENT SB – GRID SUPPORT UTILITY-INTERACTIVE <br />INVERTERS AND CONVERTERS BASED UPON IEEE 1547-2018 and IEEE 1547.1-2020 <br />Reference: SunPower Corp. UL File E478330 AC Modules <br />Dear Pat Cruz, <br />An AC Module is a combination of PV Module with an Integrated Inverter. The compliance of this combination to UL <br />Supplement SB is relevant strictly to the Inverter’s grid interconnection performance certification under UL 1741 and its <br />installed firmware during the Inverter evaluation to SB. <br />The following list of AC Modules have been investigated by UL in accordance with UL 1741. In addition, a list of Inverters <br />used in these AC Modules are additionally certified to the grid support interconnection requirements under UL1741 <br />including Supplement SB. We have provided a web link to the specific grid interconnection certification page on our UL <br />product iQ certification database where the SB compliance can be verified for the inverter in the AC Modules. <br />AC Module Models: <br />SPR-WWW-XXX-YYY-Z-AC <br />where “WWW” is E19, E20, X20, X21, X22, where “XXX” – is the wattage rating of the PV Module used as a component <br />and is between 320 and 370 in 1W increments, where “YYY” is BLK or blank, and where “Z” is “E” “G”, “H”, “L” or “E6” to <br />identify the Microinverter being used. <br />SPR-AXXX-YYY-Z-AC <br />where “XXX” – is the wattage rating of the PV Module used as a component and is between 380 and 440 in 5W <br />increments, where “YYY” is BLK or blank, and where “Z” is “E” “G”, “H”, “L” or “E6” to identify the Microinverter being <br />used. <br />SPR-MAX5-XXX-YYY-Z-AC <br />where “XXX” – is the wattage rating of the PV Module used as a component and is between 380 and 440 in 5W <br />increments, where “YYY” is BLK or blank, and where “Z” is “E” “G”, “H”, “L” or “E6” to identify the Microinverter being <br />used. <br />SPR-MXXX-YYY-Z-AC <br />where “XXX” – is the wattage rating of the PV Module used as a component and is between 385 and 450 in 5W <br />increments, where “YYY” is BLK or blank, and where “Z” is “E” “G”, “H”, “L” or “E6” to identify the Microinverter being <br />used. <br />SPR-MAX6-XXX-YYY-Z-AC <br />where “XXX” – is the wattage rating of the PV Module used as a component and is between 385 and 450 in 5W <br />increments, where “YYY” is BLK or blank, and where “Z” is “E” “G”, “H”, “L” or “E6” to identify the Microinverter being <br />used. <br />Page 2 of 2 <br />Inverters and Certifications for each AC Module Model Numbers <br />Inverters UL Listed E341165 Enphase Energy Inc. - Static Inverters, Converters and Accessories for Use in Independent <br />Power Systems <br />“E” – Inverter Enphase/SunPower Model IQ7XS-96-ACM-US <br />Link to Inverter UL Product iQ: https://iq.ulprospector.com/en/profile?e=4862840 <br />“G” – Inverter Enphase/SunPower Model IQ7AS-66-ACM-US or IQ7A-66-ACM-US <br />Link to Inverter UL Product iQ: https://iq.ulprospector.com/en/profile?e=4862901 <br />“H” – Inverter Enphase/SunPower Model IQ7HS-66-ACM-US <br />Link to Inverter UL Product iQ: https://iq.ulprospector.com/en/profile?e=4862720 <br />“L” - employs Enphase Inverter Model IQ7A-72-2-US <br />Link to Inverter UL Product iQ: https://iq.ulprospector.com/en/profile?e=4862901 <br />“E6” - employs Enphase Inverter Model IQ7A-72-E-ACM-US <br />Link to Inverter UL Product iQ: https://iq.ulprospector.com/en/profile?e=4862901 <br />Reviewed by: <br />Tim Zgonena <br />Timothy P. Zgonena <br />Principal Engineer (PrE) <br />Very truly yours, <br />Ben Baczenas <br />Ben Baczenas <br />Senior Project Engineer <br />Ben.Baczenas@ul.com <br />Any information and documentation involving UL Mark services are provided on behalf of UL LLC (UL) or any authorized <br />licensee of UL <br />3428 S Saddleback <br />Ct08/09/23