If you're having trouble knowing exactly how much uplight the light fixtures on your site are emitting there is a simple free tool for converting an IES file into an output that will display upligh

This note is for CALGreen but thought I'd share anyway. The Light Pollution credit under CALGreen is now considered voluntary until July 1st.

For Option 2, a document, such as manufacture product sheets needs to be provided to confirm the resultant transmittance of shading device is less than 10%. What is resultant transmittance?

Has anybody been successful in meeting the exterior lighting requirements by using an automatic shutoff control, at say 10PM? I assume this alone is not acceptable.

We have a site with 3 product buildings and a small separate canteen building .

We are doing external lighting simulation for factory building. We are using 250W street light fitting (10nos) and there is no other type of lights.

Can actual lighting level measurements be used as for compliance for this credit?

Hello all, Regarding light leaking from a high bay warehouse with clerestory windows above the dock doors.

We are working on a government facility which will potentially have Statues and/ or large War Relics displayed on-site.

Does anyone know of a manufacturer that makes a parking lot lighting fixture that casts light in only one direction, instead of 2 or 4 directions?