Heating Degree Day

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Heating Degree Day

A day on which the temperature in a certain area is below 65 degrees Fahrenheit, necessitating the use of heaters. Heating degree days are used in some weather futures, which are contracts in which the buyer is required to pay the seller some multiple of $20 for each heating degree day in a month, depending on how much cooler it is. Weather futures allow businesses to hedge against potential losses resulting from unexpected changes in weather. Energy companies are the most common sellers of weather futures; they have become relatively popular investments. See also: Cooling degree day.
References in periodicals archive ?
Actual heating degree days in the Kansas service area were 300 in the second quarter 2015, 27 percent warmer than normal and 27 percent warmer than the same period last year;
HDD = heating degree days (base temperature appropriate to specific building)
8) A degree day is defined relative to a base temperature wherein the heating degree day (HDD) refers to a day when temperature is lower than the base and heating is required to reach the base temperature and vice versa.
Equation (5) substitutes heating degree days in 1979 for average temperature and finds that the colder the winter, the higher the death rate.
The heating degree days in equations (5) and (6) account for the difference between inside and outside temperatures.
Actual heating degree days in the Kansas service area were 2,515 in the first quarter 2015, relatively normal and 13 percent warmer than the same period last year;
Pre- and Post-Retrofit Monthly Natural Gas Use (in Unspecified Units) and Heating Degree Days for a Retrofit Project Pre-Retrofit Post-Retrofit Month HDD Gas use HDD Gas use Jan 906 3,099 963 2,680 Feb 529 2,054 682 1,994 Mar 564 2,169 504 1,568 Apr 162 963 163 713 May 20 790 11 691 Jun 2 724 4 478 Jul 0 543 0 539 Aug 0 346 0 646 Sep 51 841 28 429 Oct 252 1,214 212 1,040 Nov 326 1,437 373 1,416 Dec 565 2,027 839 2,480 Total 3,377 16,207 3,779 14,674
Actual heating degree days in the Oklahoma service area were 1,339 in the fourth quarter 2014, 3 percent colder than normal and 14 percent warmer than the same period last year;
The degree day-based method is based on the relationship between natural gas use and heating degree days, resulting in a linear model that can be used to project energy use assuming no retrofit took place and a model to project post-retrofit gas use.
Climatic design conditions and cooling and heating degree days were calculated using data from different decades for 1274 stations worldwide.
AER forecasts include monthly minimum temperatures, and energy sensitive parameters such as, heating degree days and population-weighted heating degree days.
21 weather primarily due to 23 percent higher cooling degree days and 14 percent higher heating degree days than 2009.