The private for-profit “utility” in California, PG&E, is extremely corrupt but voters can’t do anything about it because it’s a one-party state which means the only people that run for the opposition party are completely looney. Look up the history of the Paradise fire and “public safety power shutoffs”.
One party has nothing to do with itx it's more just standard PUC malfeasance and corruption which is endemic across the country. Ohio, for example, is anything but a one party state yet has legislators going to prison for being bribed by utilities to pass outrageous legislation.