PARKING LOT & GARAGE LIGHT DIMMING

In most parking garages the lights burn 24/7.  Dimming these lights in response to daylight availability and non-use periods can represent electric cost savings from 30% to 50%!

The Sinewave Energy Saving Strategy

Sinewave’s energy saving strategy is to install the ESD dimmers on all HID and fluorescent lights and then dim them during off-peak and after hours, but quickly ramp them up to full power in response to motion or occupancy sensors.

Example:

Electric cost = $0.10/kW-hr
Lighting power = 100,000 Watts at full power (876,000 kW-hr/year)

Dimming to 90% for 50% of the time = 394,200 kW-hr/year
Dimming to 50% for 50% of the time = 219,000 kW-hr/year 
                                                         Total = 613,200 kW-hr/year

 This simple dimming scheme saves 262,800 kW-hr/year (30%)
Cost savings = $ 26,280/year
Payback = 14 months for HID (11 months for fluorescent lamps)
Outdoor parking lots also save by dimming to 50% when unoccupied.

Enhanced Security

Because the lights return to full power immediately in response to motion detection, customers are comforted, while trespassers are warned that their presence has been detected.

The ESD Also Dims Fluorescent Lamps

Due to its unique true sinewave electric control, the ESD can also dim T12 and T8 fluorescent fixtures (ballast must not have an active front end) down to 30% of their wattage, which provides even greater energy savings than possible with HID lamps.

Ten ESD Sinewave lighting dimmers installed in a parking garage can save more than 290,000 Watts of energy, saving 1,000 Tons of coal, and reducing carbon dioxide emissions by 405,000 pounds per year.
And the payback is less than 1.5 years!