Electric System Funds and Accounts. The Treasurer shall continue to maintain the following funds and accounts, heretofore created under the 1972 Bond Resolution and the 1986 Bond Resolution and pursuant to Section 1210 of the City Charter, so long as any Senior Bonds or Qualified Obligations remain Outstanding; provided, however that if no Senior Bonds remain outstanding and 2020 Bonds are the only Qualified Obligations Outstanding, such funds and accounts shall be closed on the earlier of (i) the Crossover Date and (ii) the date that no 2020 Bonds remain Outstanding: Electric Revenue Fund, and the following accounts therein: