dˌʌbəljˌuːpˌiːpˈiːˌɛsˈɛs wʌz ɹᵻnˈeɪmd ˈɛnɚdʒi nɔːɹθwˈɛst ɪn noʊvˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd nˈaɪnti ˈeɪt, ænd ˈeɪdʒənsi mˈɛmbɚʃˌɪp ɪŋklˈuːdz twˈɛnti ˈeɪt pˈʌblɪk pˈaʊɚ juːtˈɪlᵻɾiz, ɪŋklˈuːdɪŋ twˈɛnti θɹˈiː ʌvðə stˈeɪtz twˈɛnti nˈaɪn pˈʌblɪk juːtˈɪlᵻɾi dˈɪstɹɪkts.
WPPSS was renamed Energy Northwest in November 1998, and agency membership includes 28 public power utilities, including 23 of the state's 29 public utility districts.