Manufacturers originally designed double-ended high-pressure sodium light bulbs so they would be compatible with double-ended metal halide fixtures. Traditional single-ended high-pressure sodium bulbs ...

Alliant Energy had been studying replacing the high-pressure sodium light bulb casting a yellowish-orange glow on downtowns and residential streets around Iowa with a more efficient, brighter white ...

New York is changing its color. For decades, the city relied on high-pressure sodium lamps to light its streets, parks and highways. The bulbs were a cheaper, more efficient alternative to the mercury ...

The City is in the process of changing out the city-owned street lights downtown from high pressure sodium bulbs to LED bulbs. We are taking advantage of a rebate offer from AEP that will cover a ...

CULPEPER, Va. (WUSA9) -- Things may look a little brighter the next time you go to downtown Culpeper. Town officials tell us that crews have started replacing high-pressure sodium bulbs with more ...