Ontario's electricity system four key components

As you may know, Ontario's electricity system has four key components: generation, transmission, distribution and a retail market:

• Generating companies convert water from dams, coal, natural gas, wind and other resources into electricity;

• Transmission companies use large wires to connect the electricity produced at generating stations to transmission substations in the communities where it is needed;
• Distribution companies use smaller wires to carry electricity to homes and businesses; and
• Electricity retailers buy electricity from generators and sell it directly to consumers through contracts.


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