Exhibit Designation Nature of Exhibit Previously Filed as Exhibit to: 4(h) Company Order and Officers Certificate to The Bank of New York Mellon Trust Company, N.A. dated March 17, 2020 establishing the terms of the 2.60% Senior Notes Series P due 2030. Form 8-K, Ex 4(a) dated March 17, 2020 4(i) Company Order and Officers Certificate to The Bank of New York Mellon Trust Company, N.A. dated January 7, 2021 establishing the terms of the 1.65% Senior Notes Series Q due 2031. Form 8-K dated January 7, 2021 Ex 4(a) 10(a) Inter-Company Power Agreement, dated July 10, 1953, among OVEC and the Sponsoring Companies, as amended September 10, 2010. 2013 Form 10-K, Ex 10(a) 10(b) Consent Decree with U.S. District Court dated October 9, 2007, as modified July 17, 2019. Form 8-K, Ex. 10 dated October 9, 2007 Form 10-Q, Ex 10, June 30, 2013 Form 10-Q, Ex 10, June 30, 2019 *23 Consent of PricewaterhouseCoopers LLP. *24 Power of Attorney. *31(a) Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. *31(b) Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. *32(a) Certification of Chief Executive Officer Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code. *32(b) Certification of Chief Financial Officer Pursuant to Section 1350 of Chapter 63 of Title 18 of the United States Code. 101.INS XBRL Instance Document. The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document. 101.SCH XBRL Taxonomy Extension Schema. 101.CAL XBRL Taxonomy Extension Calculation Linkbase. 101.DEF XBRL Taxonomy Extension Definition Linkbase. 101.LAB XBRL Taxonomy Extension Label Linkbase. 101.PRE XBRL Taxonomy Extension Presentation Linkbase. E-12