September 2009 |
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Smart Buildings and Market Information Enable Collaborative Energy Collaboration requires able partners; smart grids require smart buildings able to make intelligent decisions about energy use. |
Toby Considine |
Intelligent energy use acquires energy at the right time at the right price for the right reason. Intelligent buildings provide customer amenities and customer services at the right time. Collaborative energy works with the smart grid to minimize the incompatibilities of these two problem sets. Systems on the grid and in the building need to do a better job of sharing information to improve the performance of these functions.
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Smart operations in transmission and distribution
will provide only minimal help in adapting to new energy sources or in
coordinating supply and demand. The improved situation awareness they provide
can, however, deliver better market information to help smart buildings acquire
energy at the right time.
Intelligent buildings need to know what services their occupants expect them to
provide, and at what quality of service. Today’s intelligent thermostat makes
the occupant think about the building. The occupant should tell the building
what his activities are, and what quality of service he expects. The thermostat,
then, should optimize service [comfort] delivery as well as economic performance
on its own.
To optimize economic performance, buildings need three types of information from
a smart grid. (1) A smart grid should provide the building with the price of
energy now, and anticipated price in the future. (2) A smart grid should provide
risk and reliability information, both now and for the future. (3) A smart grid
should provide information on other aspects of electricity that the building
occupant may be interested in, such as available carbon credits or green
generation source. (4) A smart grid must provide the building with information
on current energy usage rights, information that should be as frequent and as
close to real time as practicable. With these information streams, the
intelligent building can begin to use energy intelligently.
The plug in electric vehicle is just one more smart component of the intelligent
building. The owner should provide a schedule of the services that will be
required. This may include distance to work. It may include after-school sports
and it may include evening choir practice or even community organizing. Energy
use decisions by the car, including rapid charging or overnight waits, becomes
merely another aspect of the functions of an intelligent building.
These capabilities are pre-adaptations for distributed energy. In biology,
pre-adaptation refers to features evolved for one purpose that are ready to
serve another purpose later. Distributed energy will be more intermittent than
current electrical sources, and may be subject to more regulation as to when it
may or may not be used. The intelligent building is what enables smart grids to
accept distributed energy.
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Utilities are relatively monolithic in their requirements and extremely risk
adverse. This means that utilities make poor markets for new technologies.
Intelligent buildings are diverse; they will provide a mix of purchasers ranging
from early adopters to laggards that with the late risk adverse, will result in
more normal markets for energy technology, e.g., the Pemberton innovation
diffusion and Rogers’s technology adoption curves. This will attract more
venture capital to distributed energy, particularly to energy storage. There are
more storage options at the smaller scale of the end node than there are at grid
scale. There are many ways to store energy, and the curious might look to IDEA
(District Energy) to expand their perspectives. Distributed energy resources and
storage enable the Net Zero Energy (NZE) building. NZE it the most intelligent
energy use of all.
The electric distribution system of North America has enabled for us the
greatest life style ever invented. It has largely succeeded in creating
electricity too cheap to meter…until we bundle the capital costs into the
electricity. To make the next step, smart grids must interact with smart
buildings: collaborative energy...
Collaborative energy is how the smart grid will deliver the most benefits to
society. Those benefits will be social and environmental as well as economic.
The purpose of the smart grid is to better coordinate energy supply and demand,
even as the sources of that supply become more distributed and less reliable.
But collaboration requires able partners; smart grids require smart buildings
able to make intelligent decisions about energy use.
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"When one door closes, another opens; but we often look so long and so
regretfully upon the closed door that we do not see the one which has opened for
us." -- Alexander Graham Bell
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