1. The Generation of Electricity

2. Sources of Electricity in the USA

4. Coal Power Plant In a fossil-fueled steam turbine, the fuel (mainly coal) is burned in a furnace to heat water in a boiler to produce steam.

26. Transformers

30. The Continental U.S. power transmission grid consists of about 300,000 km of lines operated by approximately 500 companies.

31. The Power Plant A power plant generates 25,000V

32. A power station steps up the voltage to 345,000V so it can be transferred through power line

34. Area Substation A substation steps the voltage down to 100,000 V

35. Distributing Substation A distributing substation steps the voltage down to 20,000 V

36. Residential Distribution Transformer A step down transformer outside your house steps the voltage down to 120 V and 240 V (240 V is for large appliances like your washer and dryer)

38. What is the “Smart Grid?”