NEWS IN THE WORLD OF POWER AND INTEGRATED BUILDING SYSTEMS
> ACCORDING TO the Smart Outdoor Lighting Alliance (SOLA),
2015 was a “watershed year” for outdoor light-emitting diode
SOLA’s recently released “Smart Urban Outdoor Lighting
Trends” report states LEDs make up more than 50 percent of all
new public outdoor lighting fixtures sold, and this percentage
continues to grow rapidly.
As SOLA predicted, LEDs’ cost-effectiveness has essentially
eliminated older-technology high-pressure sodium (HPS) from
new public lighting installations.
“With average LED roadway fixtures dropping from $155
in 2014 to $125 in 2015, HPS can no longer be considered an
economically viable alternative for most new and retrofit
installations,” the report states.
This change is due to the parity of fixture costs with HPS
and the increased cost of relamping and higher operating costs
associated with them. While some cities will continue to relamp
and replace damaged HPS fixtures, it will be extremely difficult
to justify group replacement of any public lighting with anything
but LEDs, according to the report.
Typical luminaire efficacies for LED roadway fixtures now
average 120 lumens per watt (LPW), with some reaching 145
LPW. In 2014, most LED fixtures were in the 80–90 LPW range.
“If this pace continues, we can expect average performance
in the 150 LPW range by the end of 2016,” the report states.
“LED luminaire efficacy now exceeds HPS by approximately 50
percent and may be doubled by the end of the 2016.”
However, another efficacy trend is emerging, as new LED
chips close the gap between warm- and cool-white lighting.
“Just two years ago, the typical 3,000K– 5,000K CCT
[correlated color temperature] delta was about 25 percent,” the
report states. “Today, it is closer to 10 percent. This will reduce
the economic pressure to use cooler color temperature fixtures
that are proving less popular with the public, produce more glare
and skyglow, and are responsible for more ecological problems.”
These trends show that a convergence of factors will
continue to accelerate the transformation to LED street lighting
in the near future.
“As innovative financing options like Energy Service
Companies (ESCOs) remove the capital cost obstacle, and
as reduced fixture costs and operating expenses shorten the
payback period, we should see more cities taking the plunge,”
the report states.
However, no LED public lighting should be considered
without a pilot installation that involves public feedback.
“The days when DOT staff makes lighting decisions without
consulting the community should be over,” the report states.
“Color temperature, lighting levels and dimming options should
be demonstrated, and an experienced lighting design firm
should be contracted to help manage the process.”
> THE DIGITAL AGE HAS GIVEN US
plenty of new lingo. From smartphones to
the Internet of Things (Io T), the growth
of technology has also created its own
vocabulary. Now, it is time to add the term
“smart state” to our digital dictionary.
A spinoff of the “smart cities” concept,
smart states are state governments with
a vision for how technology can help
make government work better. A recent
white paper by the market research firm
International Data Corp. (IDC) provides an
in-depth look at the smart states concept,
and it examines how Illinois is becoming
one of the early leaders.
“Introducing the Smart State: Illinois
Leads the Way” identifies the basic
elements of a smart state. According
to IDC, smart states are vital
to the growth of smart cities,
and, in that effort, they have
a triple role. It consists of
transforming state government
to become more efficient
and technologically smart,
supporting cities that are trying
to do the same, and creating
regional clusters so those cities can
connect with each other.
According to the white paper, Illinois
has taken the first steps toward becoming
a smart state by articulating its vision.
It has outlined several goals, including
Illinois Charts a Course for Smart States
improved efficiency, effectiveness and
accessibility of government services;
the creation of an attractive business
environment; increased gross
value over a decade; becoming
a leader in the smart state
movement; and creating a
tangible platform for global
The state’s first step in
achieving these goals was to
survey government agencies to determine
the adoption level of Io T and smart city
technologies and initiatives. The survey
showed a relatively low adoption rate ( 7
percent) but a noticeably higher expected
growth rate in these project types ( 24
percent) over the next two years.
For more on smart cities, see page 68.
Smart Urban Outdoor Lighting Trends