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Daylight Harvesting: Comparing Modeled to Measured Savings

In a recent study, the Energy Center of Wisconsin monitored several daylighting systems in Minnesota and Wisconsin and analyzed the results of commissioning those systems.

The researchers concluded: “Energy modeling, with its assumption of ideal control, appears to have the potential of being an accurate predictive tool for highly effective (>75%) control systems. However, the agreement between modeled and measured savings diverges significantly for the poorly controlled systems, with the model significantly over-predicting savings as compared to the measured results.”

The primary takeaway here is predicted energy savings are best realized if the lighting control system is properly commissioned.

Click here to read this whitepaper.

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