X0306 4 2019-07-29 0 0001772695 Sunnova Energy International Inc. NOVA 0001228688 SHAPER C PARK 20 EAST GREENWAY PLAZA, SUITE 475 HOUSTON TX 77046 1 0 0 0 Common Stock 2019-07-29 4 J 0 1753199 0.00 A 1753199 I See Footnote Such shares of common stock of the Issuer ("Common Stock") were received in connection with the closing of the initial public offering of the Issuer in exchange for previously held interests in Sunnova Energy Corporation, pursuant to that certain Agreement and Plan of Merger, dated as of July 29, 2019, by and among the Issuer, Sunnova Energy Corporation and Sunnova Merger Sub Inc. Such shares of Common Stock are owned directly by SEIS Holdings LLC. The reporting person serves as the Chief Executive Officer for, and he and his spouse hold membership interests in, SEIS Holdings LLC. The reporting person disclaims beneficial ownership of this Common Stock except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such Common Stock for purposes of Section 16 or for any other purpose. /s/ Walter A. Baker by Power of Attorney 2019-07-31