Ordinance amending Ordinance No. 172-20, to authorize an increase of the issuance and sale of tax-exempt or taxable Power Revenue Bonds and other forms of indebtedness by the San Francisco Public Utilities Commission (Commission) in an aggregate principal amount not to exceed $162,314,897 to finance the costs of various capital projects benefitting the Power Enterprise pursuant to Charter, Sections 9.107(6) and 9.107(8), including amendments to the Charter of the City and County of San Francisco enacted by the voters on November 5, 2016, commonly referred to as Proposition A; authorizing the issuance of Power Revenue Refunding Bonds; declaring the Official Intent of the Commission to reimburse itself with one or more issues of tax-exempt or taxable bonds or other forms of indebtedness; and ratifying previous actions taken in connection therewith, as defined herein.