The deregulated trading power markets (CAISO, EIM, ERCOT, PJM, MISO(MidC), NYISO, SPPIM) are supposed to work out for the consumer, but as someone who did implementation work in those markets, I can assure you that it is just another middle man who wants his cut. Compliance costs, fees for not participating, penalties for incorrect generation, etc.. it all adds up. Those costs just get passed onto the consumer.
Also pay attention to hearings at your local PUC (utilities commission) where your providers may be going and asking for rate hikes. If people show up at those meetings and contest the hikes, you can let your voice be heard.