I believe that the rates you are BenoitP have quoted are the wholesale rates. They are the rates that a grid operator might pay to buy electricity from a producer or from another grid operator.

Consumers rates will be at least about twice that.

A good heuristic to tell you are looking at a rate is that is not a consumer rate is that if it is quoted in units that are per MWh it is probably not a consumer rate. Consumer rates are almost always quoted per kWh.