Nebraska public power district is asking all customers from O’Neill to Ainsworth to voluntarily conserve energy today. The reduction in energy consumption will help alleviate the need for NPPD to take emergency action. Nebraska public power district is asking all customers from O’Neill to Ainsworth to voluntarily conserve energy today. The reduction in energy consumption will help alleviate the need for NPPD to take emergency action. Please go to nppd.com for energy conservation tips.