IEEE Power & Energy Magazine - July/August 2015 - 21

energy supply and delivery systems for millions of people.
As pricing structures change
for distributed resources, the
conventional wisdom of central
station economics is being challenged and so are traditional
business models of the franchise
area utility that have regulated
supply. As distributed resources
increase, the traditional utility
business model has simultaneous multiple revenue stream
devaluations in terms of supply
revenue and retail sales, so utilities may need to reinvent themselves to survive.
A slippery slope for regulated
utility businesses has emerged
of prosumers opting for partial
self-supply arbitraging against
utility rates with net metering
where utilities get left with vanishing market sales for regulated
returns on asset investments yet
Distributed Networks
figure 2. Transmission lines circa 1920s. (Source:
the prosumer expects the utility
More and more emphasis is
Chilectra.)
to maintain its obligation to serve
being given to distributed resilient networks to account for natural weather events as well during self-supply shortages. Many utilities have regulated and
as for security against extremists, and also because of these unregulated businesses where in some situations the regulated
technologies' decreasing costs. The retirement of coal plants businesses are being assessed as more risky than the unreguis indirectly the retirement of a traditional form of energy stor- lated businesses.
Power-flow control technologies are emerging that have
age as a backup for system security; coal plants have days,
weeks, even months of coal on site that can be relied on in the the ability to optimize the operations and the utilization of
case of extreme events such as a polar vortex, which can stress the existing transmission and distribution grids.
future market position outside
the traditional large manufacturers. Various storage technologies have raised the cycle life
and reduced costs, and these
are being developed for distributed networks as well as utility
scale installations.
Storage has potential for price
setting in terms of energy prices,
ancillary prices, and capacity
prices and can provide other
value streams. Charging energy
storage at off-peak prices as
available to offset peak demand
provides value to energy prices
and capacity offset. In addition, energy storage can provide
multiple reserve and regulation
products while charging and
discharging, thus competing
directly with fossil plants for providing flexibility and peaking.

figure 3. Sheep and windmills on the Sacramento delta, California. [Source: Franco Folini, https://www.flickr.com/photos/livenature/11618997244, Creative Commons (CC) License.]

july/august 2015	

ieee power & energy magazine 	

21



https://www.flickr.com/pho

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - July/August 2015

IEEE Power & Energy Magazine - July/August 2015 - Cover1
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IEEE Power & Energy Magazine - July/August 2015 - Cover3
IEEE Power & Energy Magazine - July/August 2015 - Cover4
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