Welcome to the NorthWestern Energy website. Please choose a state/region below so we can deliver you the most personalized and relevant site experience possible.
We are replacing streetlights and yard lights across the state with energy-efficient LED lights.
South Dakota's LED street and yard lighting project
12,000
NorthWestern-owned streetlights will be replaced
5,000
yard lights will be replaced
2025
Project completion date
Project status
Crews began replacing yard lights around the state in 2022 and transitioned to streetlights in 2023.
What are the benefits of LED streetlights?
Less energy - LEDs use 50% less electricity than traditional high-pressure sodium (HPS) lights.
Reduced Light Pollution - NorthWestern is offering a full range of dark-sky-friendly LED options. With LEDs, the light can be better directed to where it is needed – on the street and adjacent sidewalks.
Improved visibility - Old HPS lighting produces an orange-yellow light that does not render colors well. LEDs, on the other hand, output a fuller light spectrum that renders colors accurately.
Lower operation costs - LEDs require less energy, and, because they are more efficient, they also last longer and need to be replaced less often than HPS streetlights.
Improved safety and security - The new lights give increased safety at night through greater visibility and fewer streetlight outages.
Project timeline
8,000
lights were replaced in 2022 and 2023
5,000
lights will be replaced in 2024
4,000
lights will be replaced in 2025
Bright Stories: LED Streetlights
Bright Stories: LED Streetlights
"The kind of light we need to make people feel safe and secure walking at night."
For more information about the project, please contact: