(a) A public utility shall prioritize the offering of program services to eligible customers in the following order:

1. (1) Among eligible customers, those with the largest energy usage and greatest opportunities for public utility bill reductions relative to the cost of providing program services, including CAP shortfall, shall be offered program services first. Prioritization criteria include the following:

   1. (i) When prioritizing eligible customers by usage level, several factors shall be considered when feasible. These factors may include the following:

      1. (A) The size of the dwelling.
      2. (B) The number of occupants.
      3. (C) The number of consecutive months of public utility service at the dwelling.
      4. (D) The opportunity for coordination with other available programs.
      5. (E) The end uses of the public utility service.
   2. (ii) When prioritizing eligible customers by opportunities for public utility bill reductions, a public utility may also consider factors that tend to facilitate public utility bill reductions.

2. (2) Among customers with the same standing with respect to paragraph (1), when feasible, priority shall be given to customers in the following sequence:

   1. (i) Customers in CAP with the largest in-program arrearage as a percentage of their household income.
   2. (ii) Non-CAP customers with the largest arrearage as a percentage of their household income.
3. (3) Among the customers with the same standing with respect to paragraph (2), those with incomes at the lowest FPIG level shall be offered program services first.