This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Compact fluorescent lamp replacement. en Replacing incandescent lamps with compact luorescent lamps is one of the simplest ways to reduce energy use in spaces containing historic light ixtures Installing energy efficient ballasts and lamps provides even greater longterm operational cost savings gsa gov pdf GSA PDUSGov Uploaded