(a) Each public utility must report the following data on residential customers to the commission monthly, in a format determined by the commission:

1. (1) number of customers;
2. (2) number and total amount of accounts past due;
3. (3) average customer past due amount;
4. (4) total revenue received from the low-income home energy assistance program and other sources contributing to the bills of low-income persons;
5. (5) average monthly bill;
6. (6) total sales revenue;
7. (7) total write-offs due to uncollectible bills;
8. (8) number of disconnection notices mailed;
9. (9) number of accounts disconnected for nonpayment;
10. (10) number of accounts reconnected to service; and

11. (11) number of accounts that remain disconnected, grouped by the duration of disconnection, as follows:

    1. (i) 1-30 days;
    2. (ii) 31-60 days; and
    3. (iii) more than 60 days.

(b) Monthly reports for October through April must also include the following data:

1. (1) number of cold weather protection requests;
2. (2) number of payment arrangement requests received and granted;
3. (3) number of right to appeal notices mailed to customers;
4. (4) number of reconnect request appeals withdrawn;
5. (5) number of occupied heat-affected accounts disconnected for 24 hours or more for electric and natural gas service separately;
6. (6) number of occupied non-heat-affected accounts disconnected for 24 hours or more for electric and gas service separately;
7. (7) number of customers granted cold weather rule protection;
8. (8) number of customers disconnected who did not request cold weather rule protection; and
9. (9) number of customers disconnected who requested cold weather rule protection.