•
Installed power was reduced from 614,640 w
to slightly more than 200,000 w.
•
The installed power/point of light ratio fell from
190w/point of light in 2011 to the current ratio
of 65w/point.
•
Energy consumption of the installation drop-
ped 60%.
•
Lighting services have improved considerably.
More light, better illuminance, more standard,
and better colour rendition.
•
The cost of the service was down 25% versus
2011.
•
There’s still a lot to be done.
SAFETY!!!
From a technical perspective, the viability of an ope-
ration such as this one mainly depends on how much
room there is for improving efficiency. In Santa Susan-
na, the installed power/point of light ratio was 190w/
point of light. To be considered efficient, the ratio of
an installation should be close 100 w/point of light.
Accordingly, the ESC formula would be the most at-
tractive one for cities or towns which have a large pre-
sence of mercury-vapour lamps at their installations.
The technical quality of the preliminary work, the au-
dit and tender specifications, are essential for ensu-
ring the viability of the operation. Risk increases or
diminishes on whether or not there are subrogated
personnel.
A contract based on improved energy efficiency does
not solve everything.
There is still a lot that has to be done!
Conclusions
Results
leading engineering firm in the sector which
also collaborated in the following steps:
•
Selecting the most appropriate lumi-
naries and lamps.
•
Performing more than 40 lighting stu-
dies to determine the power that was
to be installed.
•
Performing four tests by replacing the
existing equipment and the lamps
that were to be kept, taking lighting
measurements before and after these
operations.
•
Determining each f the specific power
of more than 3,200 points of light.
•
Verifying the technology of the tele-
control system at each control panel.
After this necessary preliminary phase for
carrying out the work and thanks to the co-
llaboration of the City Council and its exten-
sive work the execution of the project was
completed within the foreseen term.
Improved lighting service
Examples:
c/Pirineus - BEFORE
c/Pirineus - AFTER
Improved lighting with much less power
Decreased consumption
Consumption fell from 12,000 before the upgrading to 5,000
k n o w l e d g e
