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Replace a frequently used old bulb with an LED
LEDs can provide comparable light with less electricity than incandescent bulbs.
One possibility
Another possibility01 / Why this can helpWhat changes the result
Compare light output, operating hours and the bulb being replaced.
02 / One possible next stepCheck what you already own before buying something. The benefit comes from repeated use.
03 / Sources and scopeUS Department of Energy · Energy Saver Guide ↗References in the original project +
US DOE Energy Saver (2023); IEA Lighting Report (2022)
These bibliographic references come from the original cards. They provide context; they do not validate every numerical assumption below.
