S3. Enphase innovation and industry leadership Supporting a more clean, reliable, and better-performing grid through codes and standards. To support our commitment to drive the adoption of sustainable clean energy solutions, we participate in the development of policies and regulations around the world as part of our core principles. Underwriters Laboratory (UL) and the Institute of Electrical and Electronics Engineers (IEEE) “We participate in the In 2023, Enphase continued its leadership and collaboration with UL and IEEE, including development of policies and acting as task group leader and co-convener for several speci昀椀c standards and actively regulations around the world as participating in the standards development process for a variety of safety and compliance part of our core principles.” issues. Underwriters Laboratory elevated Power Control Systems (PCS) from a Certi昀椀cation Requirements Decision under UL 1741 to an Outline of Investigation (OOI) under UL 3141 in 2023. This change re昀氀ected UL’s belief that PCS is a critical function which warranted being a full UL standard. Enphase lead the PCS task group which published the First Edition of UL 3141 and will continue work on future editions leading to publication as a bi-national standard in the U.S. and Canada. In addition to leadership on the PCS task group, Enphase also participated in UL Standards Technical Panels UL 1741, UL 3141, UL 3741, UL2703, UL 6703, UL 9540, UL 9540A, and UL 1699B during 2023. Enphase continued its support of the Institute of Electrical and Electronics Engineers in 2023, serving on the management team developing the next revision of the IEEE P1547 and P1547.1 standards as well as participating in multiple sub-groups supporting this e昀昀ort. Enphase also served as co-facilitator of Task Force 2, charged with developing recommended changes in multiple sub-groups to accommodate Vehicle to Grid applications in 1547. Enphase co-facilitated the 1547.1a amendment, which corrects or provides clarity on over 100 issues discovered following original publication of 1547.1 in 2020. Interstate Renewable Energy Council (IREC) and Sustainable Energy Action Committee (SEAC) Led by IREC, the SEAC provides a forum for stakeholders to address code enforcement and permitting for sustainable energy systems. Enphase is a founding member and an active participant in SEAC’s work to advance clean energy permitting and inspection initiatives. The SEAC addresses industry confusion about how to interpret particular codes, which can slow down the deployment of solar and battery systems and create more work for local o昀케cials and project developers. 66