In Texas, our operating utility Southwestern Public Service Company is primarily engaged in the generation, purchase, transmission, distribution and sale of electricity. The Public Utility Commission of Texas (external link) regulates the company for state issues and federal regulatory agencies oversee other aspects of its operations.

In South Dakota, our operating utility Northern States Power Company-Minnesota is primarily engaged in the purchase, transmission, distribution and sale of electricity. The South Dakota Public Utilities Commission regulates the company for state issues, and federal regulatory agencies oversee other aspects of its operations.

In North Dakota, our operating utility Northern States Power Company-Minnesota is primarily engaged in the generation, purchase, transmission, distribution, and sale of electricity and the purchase, transportation, distribution, and sale of natural gas to retail customers. The company also transports customer-acquired natural gas. The North Dakota Public Service Commission (external link) regulates the company's operations within the state of North Dakota, and federal regulatory agencies oversee other interstate aspects of the company's operations.

In Wisconsin, our operating utility Northern States Power Company-Wisconsin is primarily engaged in the generation, transmission, distribution and sale of electricity and the purchase, transportation, distribution and sale of natural gas to retail customers. The Public Service Commission of Wisconsin (external link) regulates the company for state issues, and federal regulatory agencies oversee other aspects of its operations.

In Michigan, our operating utility Northern States Power Company-Wisconsin is primarily engaged in the generation, transmission, distribution and sale of electricity and the purchase, transportation, distribution and sale of natural gas to retail customers. The Michigan Public Service Commission (external link) regulates the company for state issues, and federal regulatory agencies oversee other aspects of its operations.

We’re here to help you stay informed about your billing and payment options. Residential and business customer rates and tariffs can be found in the Rate Books section below. We’ve also provided details on various pricing plans, commodity adjustments, convenience charges, riders and ways to manage your bill.

In New Mexico, our operating utility Southwestern Public Service Company is primarily engaged in the generation, purchase, transmission, distribution and sale of electricity. The New Mexico Public Regulation Commission (external link) regulates the company for state issues, and federal regulatory agencies oversee other aspects of its operations.

We're here to help you stay informed when it comes to our rates. Residential and business customer rates and tariffs can be found in the Rate Books sections below. You can also access rate riders, fuel cost charge, purchased natural gas adjustment, and other resources.