Energy Northwest (formerly Washington Public Power Supply System) is a public power joint operating agency in the northwest United States, formed  in 1957 by Washington state law to produce at-cost power for Northwest utilities.
ˈɛnɚdʒi nɔːɹθwˈɛst fˈɔːɹmɚli wˈɑːʃɪŋtən pˈʌblɪk pˈaʊɚ səplˈaɪ sˈɪstəm ɪz ɐ pˈʌblɪk pˈaʊɚ dʒˈɔɪnt ˈɑːpɚɹˌeɪɾɪŋ ˈeɪdʒənsi ɪnðə nɔːɹθwˈɛst juːnˈaɪɾᵻd stˈeɪts, fˈɔːɹmd ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɛvən baɪ wˈɑːʃɪŋtən stˈeɪt lˈɔː tə pɹədˈuːs ætkˈɔst pˈaʊɚ fɔːɹ nɔːɹθwˈɛst juːtˈɪlᵻɾiz.