Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).

View the beta site
NIST logo

A. Hunter Fanney
Senior Research Scientist, Energy and Environment Division
Engineering Laboratory
National Institute of Standards and Technology
(301) 975-5864


Bookmark and Share

Monthly Result December 2013

During December 2013, the NZERTF consumed 1198 kWh of electrical energy. The solar electric photovoltaic system generated 481 kWh of electricity during the month. The difference between the energy produced by the solar photovoltaic system and the energy consumed by the NZERTF, 717 kWh, was imported from the electric grid. A graphical representation of the energy consumed and generated is found in the year to date results. The following chart breaks down the total energy consumed by the house into the various end uses. For the month of December  the greatest energy end use was for space conditioning, maintaining the house at 70 F +/- 1 F (21.1 C +/- 0.5 C), followed by plug loads, and energy used to provide hot water.

Energy by Category December 2013 - Plug Loads, 210.2; Lighting, 36.6; Appliance, 159.7; Hot Water Heating, 170.4; Heating, Cooling, Ventilation, 621.3

A breakdown of the appliance end use into the energy consumed by individual appliances is captured in the following pie chart. During the month of December 2013 the greatest appliance energy usage was associated with the clothes dryer.

Appliance Energy - December 2013: Microwave, 12.4; Oven, 31.9; Cooktop, 19.7; Refrigerator; 34.0; Clothes Dryer, 46.9; Clothes Washer, 6.3; Dishwasher, 8.6