Peak-load is a term used to describe the maximum demand for electricity or other resources during a specific period of time. Some synonyms that can be used instead of peak-load include maximum demand, high demand, peak usage, maximum load, and peak demand. These synonyms can be used interchangeably to describe the rush hour for energy consumption that typically occurs in the morning and evening. Peak-load management is important for ensuring that the energy grids can handle the sudden surge in demand and prevent power outages. By using these synonyms, we can better describe the usage patterns of energy resources and ensure that we have the necessary resources to meet the needs of consumers during peak usage periods.