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.
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References in periodicals archive ?
Munro said the increase in cooling and heating degree days indicates short-term climate change between 2017 and 2018.
On the other hand, 2015 did have 7.4% more heating degree days and 1.7% more cooling degree days when compared to 2013, attributing 45,433 kWh of total savings to the difference in roof insulation after the upgrade and accounting for weather conditions.
Where [HDD.sub.r] and [CDD.sub.r] are monthly heating degree days and cooling degree days respectively for region r.
Of the hydronic ALM controllers evaluated, savings of 12-13% were recorded, adjusted for heating degree day. In addition to the field evaluation, Brookhaven National Lab performed laboratory evaluations of ALM controller-equipped boilers to quantify pollutant emission rates per cycle with and without control.
There were 20 percent fewer heating degree days in the first half of 2012 than in the first half of 2011, Unitil said.
Double-cropping is not used in this area, generally because there are too little heating degree days. However, a recent study of the last ten years' heating degree days showed that 80-day hybrids harvested at 35% to 40% moisture content will allow for double-cropping of corn as far north as northern Illinois.
Lower gas therm sales in the Company's utility service territories reflect the effect of warmer temperatures in 2010, where there were approximately 22% and 12% fewer Heating Degree Days in the the three and six month periods, respectively, compared to the prior year.
Riker says the company already has created more than 500 customized indexes for five industries, based on weather correlations over specific time periods to benchmarks such as heating degree days. North America is the focus now, he says, and expansion to global markets "will be limited to where there is good weather data."
Currently, New York is at 68% of normal heating degree days.
If a weather station recorded an average daily temperature of 78[degrees]F, cooling degree-days for that station would be 13 (and 0 heating degree days).
Estimating gas deliveries to customers at the end of each month based on heating degree days.