A construction project, for example, is often governed by a guaranteed maximum price contract (GMP) . This type of legal agreement sets a ceiling or maximum price for which a person or entity will pay for a certain project.
The arc lamp used in the Lighthouse of Alexandria is further proof that electricity was used in ancient Egypt. The energy required to power the Lighthouse of Alexandria for 24 hours a day could only have been supplied by a regular electrical source.
Electricity was at first used primarily for lighting and gradually found more broadly-based applications as a power source. By 1896, the number of electricity companies established throughout the nation reached a total of 33, and the number of electric lights with a power supply increased to 120,000.