Observed arrival · 2026-10-18
LightingPayback, the LED retrofit calculator
A free calculator estimates commercial-building energy savings, fixture payback, and possible utility rebates for LED upgrades and lighting controls.
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- Commercial building owners and facility managers
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- A sample Missouri warehouse combines 120 troffers, 24 high bays, and 8 wall packs; controls add an estimated $1,078 a year.
Field notes
The estimate flow starts with a ZIP or postal code, utility, electric rate, and building type; fixture wattages fill in by default but can be changed. A user can add controls, choose a target payback, and optionally enter an installation quote. The worked warehouse example estimates 46,832 kWh saved annually, while the controls section attributes runtime reductions to a review of 240 studies.
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