Cummins Filtration Case Study

The before and after pictures illustrate the difference in light quality. The high pressure sodium lights, left, are only 5 foot-candles less than the fluorescent daylight lights on the right, but yet you can see much better on the right. It’s about the quality of lights, not the quantity of lights.

Problem: Cummins Filtration energy consumption was too high and light levels were too low.

Analysis: EPS did an audit of the facility and found a variety of lamps and ballasts. They included 400 watt HPS, 40 watt T12, 40 watt U shaped T12, and 8’ 60 watt T12. There were a variety of electronic and magnetic ballasts. There were no sensors or auto controls in any room. After reviewing Cummins’ current light levels, EPS determined the light grid was sufficient to achieve the light levels we desired.

Upon completion of the analysis, EPS completed an investment grade audit (IGA) for Cummins. The IGA included energy savings, cost of the project, simple payback, ROI, Lighting Power Density, and greenhouse gas reduction.

Implementation: After we presented our findings to Cummins, they decided to move ahead with the project. We worked around their schedule and had no down time in production. We completed the project on time and on budget.

Results: We changed out the HPS lights, retrofitted the T12 fixtures, and installed occupancy sensors in the offices. We were able to achieve the following results: