LED streetlights

BEARDSTOWN, Ill. — Ameren Illinois is entering its eighth-year of a multi-year streetlight replacement program to upgrade neighborhood streetlights throughout its 43,700-square-mile service territory with more energy-efficient LED (light-emitting diode) streetlights. For decades, most streetlights in the United States have used high-pressure sodium (HPS) technology, which emits orange-yellowish light. Ameren Illinois started removing company-owned HPS…