La Crosse-based Dairyland Power Cooperative is considering the addition of nuclear energy back to its mix of power sources. W-E-A-U T-V reports Dairyland is working with Oregon-based NuScale Power to use its smaller-scale nuclear generating technology. The Wisconsin utility has more than a half-million customers in four states. Xcel Energy entered into a similar arrangement with NuScale last year. Dairyland has been investing in sources like wind and solar, but the utility says there are winter days when 50-to-75-percent of its energy still comes from coal or natural gas.