NEXTEK LED LIGHTING CUTS ENERGY USE BY 61% IN MHT DEMO

OVERVIEW

Building managers at MHT Housing, one of the largest nonprofit afford­able housing companies in the state of Michigan, know they have been spending too much on lighting costs. They contacted Nextek Power Systems to provide alternatives to their traditional lighting strategy.


SOLUTION

Nextek’s experts suggested a demonstration project in a small portion of their building to illustrate energy and cost savings, and to give management an up-close look at how the new strategy worked. The system installed by Nextek encompassed the company’s general office and kitchen areas.

A Nextek representative needed only 20 minutes to retrofit fifteen T8 34W fluorescent fixtures with ten 48W, 2-foot by 2-foot LED lighting panels. A standard Nextek Power Server Module (PSM) with wireless ZigBee communication was installed to convert 110VAC power to 24VDC current used by the LEDs. Because direct current is safe-to-touch and requires only Class 2 wiring, the installation did not need a professional.

The installation reduced the total amount of system watts from 1,224 to 480.


RESULTS

Positive results were immediate. Initial readings in the general office area showed that foot candles increased from 26.7 to 48.3, while power consumption dropped from 816W to 384W.

In the kitchen area, foot candles went from 97.5 to 59.6, but the loss was more than offset by the reduction in watts, from 408 to 96,

Based on these figures and a 40-hour work week, power usage should go from 195.85kWh to 76.8 kWh per month. With an assumed cost of 9 cents per kilowatt hour, MHT’s monthly electricity expense for these small areas will drop from $17.62 to $6.91, a decrease of 61 percent.