Daylight Harvesting is the Integration of photo-electric sensors and electronic dimming ballast to into standard fluorescent fixtures. In that way the luminaires automatically adjust to maintain desired light level based upon available daylight. Crescent/Stonco Daylight Harvesting systems incorporate dimming ballast technology from Axis Technology and can provide annual energy savings of up to 30%.

Typical Applications

• Troffers
• Parabolics
• RDI
• Wraps

Daylight Harvesting Advantages

• Installation Friendly
• Less Costly
• Up to 4 Fixtures Tied into 1 Sensor
• EPAct 2005 Solution
• Annual Energy Savings between 25%-30%

Ballast Availability

• 32 watt T8
• 2 light 120v or 277v
• 3 light 120v/277v
• 4 light 120v/277v

Example

Application: 20,000 sq. ft. warehouse with a maintained light level of 25 fc.

• 239 watts vs. 454 watts
• 25 fc vs. 21 fc
• 215 watts saved per fixture
• Roughly a 47% reduction in energy costs