What does a step-up transformer do to get electricity from a generator to a consumer?

A step-up transformer increases the voltage of electricity generated by a power plant before it is transmitted over long distances. By raising the voltage, it reduces the current, which minimizes energy loss due to heat in the transmission lines. Once the electricity reaches its destination, a step-down transformer reduces the voltage to a safer level for consumer use. This process ensures efficient and effective delivery of electricity from the generator to the end user.