Our Professional Answer: The entire electricity delivery system, known as the power grid, is composed of three main components:

1. Generation: Power plants that create electricity from various sources like coal, natural gas, hydro, solar, and wind.

2. Transmission: The high-voltage network of lines and towers that transports electricity over long distances from generation sites to substations.

3. Distribution: The local, lower-voltage network that delivers electricity from substations directly to homes, businesses, and industrial facilities.

In addition to these, substations and transformers are critical. Substations are facilities where voltage is adjusted—stepped up for transmission and stepped down for distribution. Transformers are the devices that perform this voltage conversion. As a supplier of tools and equipment for both overhead and underground power line projects, Ningbo Changshi provides the crucial equipment needed for every stage of this process, ensuring reliable and efficient electricity delivery.