Landsvirkun, Iceland’s national power company, offers electricity to buyers for as low as $0.043 per kWh, which is nearly on par with what can be found in Washington State. Coupled with 20% corporate tax, the nation’s low energy prices have attracted not just data centers, methanol producers, silicon metal producers but also aluminum companies—which, again, consume massive amounts of electricity.
Electricity is deregulated in two Canadian provinces: Ontario and Alberta. Both markets showed price spikes in the first year of dereguation, but then settled down into a volatile but reasonably stable environment. Alberta's market is dominated by fossil fuel generation and as such reacts more closely to the price of natural gas. Ontario's generation mix is about 50% nuclear.
It all starts with the power generators – the companies who produce electricity to sell on the wholesale market. The electricity providers purchase the rights to large volumes of this electricity from the generators on the wholesale market and then turn around and sell it to their retail customers. The electricity providers market the sale of electricity to the public through various offerings of electricity plans that include everything from classic fixed-rate electricity, to 100% green electricity, to bundled products that have incentives such as a Nest Learning Thermostat™ or Visa gift cards.
TDSPs or EDUs are the companies and people who own and maintain utility poles and power lines. They are the ones that you call when your power goes out. These utility companies are responsible for the physical delivery of electricity to your home or business. Before deregulation, everyone was required to buy their electricity from their local utility company. With deregulation, the supply of electricity was opened to competition while the delivery of electricity continues to be regulated by the state’s public utility commission.
When it comes to the electricity itself, there is no difference at all. A cheap electric supply is the same electricity, it's simply provided by a new supplier (unless you opt for green energy - more on that here). As suppliers buy and generate different sets of energy they also have different prices. What's more, you might be on a tariff that is simply more expensive, such as a standard tariff. If you decide to switch electricity don't equate a lower price with worse service.
Ironically, technology can make the utilities’ problem worse, not better—at least in the short term. In the past, grids were developed because it was cheaper to generate large quantities of power and distribute it over wide distances, rather then generate smaller quantities closer to the place of use. It is for this reason that electricity is seen as a business that benefits from “economies of scale”.