IESO Wind Tracker

The IESO, Independent Electricity System Operator, is mandated with managing the demand and supply of Ontario’s open electricity market. Their site has an impressive amount of historical and real time data. For example, if you want to see what the current makeup of electricity feeding into the grid is right now, they can show you with a nice little pie chart on their homepage. Another is the IESO Wind Power Map which shows the current wind energy being supplied onto the grid.