Interstate Power and Light Company, an Alliant Energy company, has expanded its advanced street lighting technology project statewide — which will benefit Newton — by upgrading its streetlights to increase energy-efficiency and performance with light-emitting-diode fixtures.

“Every community is excited for it,” Alliant Energy spokesperson Justin Foss said. “We have done a lot of research for it.”

When Alliant Energy investigated light bulbs, a number of factors were considered. One was how much light the fixture produced. Street fixtures have regulations on the area. Roads must have a certain amount of light per area. The other factor was cost.