BELLEVUE, Neb. (AP) — City officials in Bellevue could replace nearly 4,800 streetlights with more efficient LED lights in hopes of saving money.

The city is considering LEDs as a way to cut its $1 million annual power bill by more than one-third.

The city began exploring the idea in 2013. The Bellevue City Council has heard pitches from Siemens, Schneider Electric and Phillips over the past two months.

Assistant City Administrator Larry Burks says there’s no exact timeline for the possible change. If the lights were installed, the city would have to wait about six years before the savings offset the cost of the conversion.

The current lights cost about $207 a year each to operate, while LEDs each cost $133 a year.