Several states have another variation of the utility cooperative, known as Public Power Districts (PPDs) in Nebraska and Public Utility Districts (PUDs) in Oregon and Washington. In both cases, the laws that created these "quasi-cooperative" utilities were created with the specific intent of taking over territory being served by privately owned power companies in those states. Nebraska's conversion from a mixture of power companies serving the state to a public power empire spanned the 1940s (the last privately owned utility line into the state being cut on December 29, 1949), with the creation of the PUDs in the Pacific Northwest starting about the same time and continuing with varying degrees of success over the following two decades. The key difference between a PPD/PUD and a cooperative is that PPDs/PUDs are publicly controlled by residents of a state or local area and run more like a municipal power system than a cooperative system. A cooperative is owned and operated by the customers they serve within their designated service area. Cooperative owners have voting rights to elect the cooperative's board members each year and generally have more say in the operations than other utility forms.