Class C:Utilities having annual electric operating revenues of more than $150,000 but not more than $1,000,000. Such utilities shall keep the accounts prescribed herein which are applicable to their operations.
Class D:Utilities having annual electric operating revenues of more than $25,000 but not more than $150,000. Such utilities shall keep all the accounts prescribed herein which are applicable to their operations, except those accounts in which the letter D does not appear in the prefix.
N.Y. Comp. Codes R. & Regs. Tit. 16 § 181.1