Chapter 14 Power System Balancing (PSB)
Providing all this additional reserve from synchronized conventional power plants would negate at least some of the environmental benefits of renewable generation and could also significantly increase the cost of operating the system. (Kirschen and Strbac 2018)
References
Kirschen, Daniel S, and Goran Strbac. 2018. Fundamentals of Power System Economics. John Wiley & Sons.