An ILEC is a telephone company that was providing local service when the Telecommunications Act of 1996 was enacted. Examples of ILECs serving South Dakota are Golden West Telecommunications, Cheyenne River Sioux Tribe Telephone Authority and Beresford Municipal Telephone Company. See a complete list of ILEC companies (18 KB). Some companies, such as Qwest, Midstate Communications and Knology, can be both an ILEC and a CLEC (see below) in different service areas.

In some states, utilities can also generate and sell electricity, but customers aren’t forced to buy the electricity from the utility company. They may choose from either the utility or available electricity providers. Before signing up for electricity service, we recommend checking the local utility’s electricity supply rate by checking their rates online or contacting them directly.


Switching electricity supplier could shave pounds off your bills. But it’s not always about how much hard cash you could save. You might be fed up with poor customer service, you might want greater visibility of your usage through an app or you might want to choose your supplier based on their green credentials, or whether they supply a smart meter.
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