Office Lighting Case Study

The Lighting Efficiency and Energy Reduction Project at this property located downtown St. Paul, Minnesota included a complete interior and exterior retrofit.

The primary goals for this project were to retrofit the existing T12 lamps from the 1990's with newer T8 technologies. Including replacing T8 electronic ballasts and 32 watt lamps with new electronic ballasts and 25 watt T8 lamps in order to reduce maintenance costs. Additional benefits include improved light quality throughout.

Energy Savings

58% reduction in Kwh usage
BEFORE: 2,107,472 Kwh
AFTER: 912,204 Kwh

Cost Savings

$98,274 lighting cost savings
Xcel Energy Project Rebate $113,000

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