What are Capacity Performance Resources primarily responsible for in the power system?

Capacity Performance Resources play a crucial role in the power system by ensuring that energy supply meets demand during peak times and under specific operational conditions. These resources are designed to not only provide energy but also reserve capacity to support grid reliability. By being available to generate power or provide reserves when called upon, they help maintain the balance between supply and demand, particularly during periods of high stress on the grid.

This functionality is essential in a well-functioning power market, where the ability to deliver power promptly or adjust generation to respond to system needs is critical. Capacity Performance Resources are held to specific performance obligations that require them to demonstrate their reliability. Therefore, their primary responsibility is to deliver energy or reserves when required, which strengthens the overall stability of the power system.