White papers

The research behind the model.

The methodology we present at conferences and build the program on, free to read, with registration.

White paper

Redefining ROI

Incorporating human performance into lighting valuation models.

Value engineering prices the fixture, less than 2% of lighting's lifetime value, and ignores the human performance that carries the other 98%. The methodology for pricing what standard ROI models miss.

Chris Sembroski · Sarah Morgan · Sarah Solbiati, PhD · Presented in Leiden, Netherlands, March 2026

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