26 Del. Admin. Code § 3002-2.0
"Cooling Season" means that portion of the calendar year extending from June 1 through September 30.
"Covered Utility" means any utility regulated by the Public Service Commission of Delaware that supplies electric or natural gas service to a dwelling unit.
"Dwelling Unit" means one or more rooms arranged for the use of one or more individuals as a single housekeeping unit, with cooking, living, sanitary, and sleeping facilities.
"Heat Index" a measure utilized by the National Weather Service of the apparent temperature (how hot it feels) when relative humidity is added to the actual air temperature.
"Heating Season" means that portion of the calendar year extending from November 15 to March 31.
"Personal Contact" means a face-to-face meeting between the customer or responsible occupant of the premises served and an employee of the covered utility who is authorized to receive payment and issue a receipt or make other arrangements for payment.
"Written Notice" means notice inwriting, mailed by FirstClass mail to the person who is being given notice, using the current billing address as shown on the records of the utility.
26 Del. Admin. Code § 3002-2.0