IEEE Electrification Magazine - December 2016 - 8

By Annabelle Pratt, Dheepak Krishnamurthy, Mark Ruth,
Hongyu Wu, Monte Lunacek, and Paul Vaynshenk

Transactive
Home energy
management
Systems
The impact of their proliferation
on the electric grid.
PPROXIMATELY 100 MILLION SINGLEfamily homes in the United States account
for 36% of the electricity load, and often
they determine the peak system load,
especially on hot summer days when residential air-conditioning use is high. Traditional building
power profiles are changing. Currently, there is an
increased use of energy-efficient building materials and
designs, which decreases building loads. In addition,
there is an increased adoption of rooftop solar photovoltaic (PV), which leads to bidirectional power flow and significant power ramps as PV output decreases in the late
afternoon. Building power profiles are likely to change
even more as residential energy storage products proliferate. Therefore, a better understanding of residential electricity demand is key to addressing the envisioned
transition of the electric power system from its traditional
structure to one that is transactive.
Another trend in the residential market is the
increased consumer adoption of home automation products ranging from keyless entry systems to smart

A

Digital Object Identifier 10.1109/MELE.2016.2614188
Date of publication: 5 December 2016

8

I E E E E l e c t r i f i cati o n M agaz ine / december 2016

thermostats. Home energy management systems (HEMSs)
are another example, and, although the market is still
nascent, market analysis studies indicate that there is
growing consumer awareness of the potential of HEMSs to
help manage home energy consumption and energy costs.
The capabilities of most commercially available HEMSs
are currently limited, offering monitoring and relatively
simple control over only a few appliances; however, products with increased intelligence are being introduced,
paving the way for the implementation of more sophisticated technologies ready for transactive systems. More
advanced HEMS products include algorithms and optimization approaches that schedule the operation of residential appliances (including lighting, heating, and cooling)
and thereby reduce energy and peak demand charges
while maintaining an acceptable level of comfort and convenience for the building occupants. These products will
2325-5987/16©2016IEEE



Table of Contents for the Digital Edition of IEEE Electrification Magazine - December 2016

IEEE Electrification Magazine - December 2016 - Cover1
IEEE Electrification Magazine - December 2016 - Cover2
IEEE Electrification Magazine - December 2016 - 1
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IEEE Electrification Magazine - December 2016 - Cover3
IEEE Electrification Magazine - December 2016 - Cover4
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