Centrally dispatched generator
central dispatch unit · non-central generator
A centrally dispatched generator is a unit over 20 MW that runs on KPX dispatch instructions; others are non-centrally dispatched.
KPX decides when and how much these units run. They bid available capacity into the market and receive capacity payments on it; non-central units such as most small solar plants do not.
Some units above 20 MW, including many renewables, register as non-central under exceptions in the rules, so size alone does not settle the status.