• NRG Energy average operating margin for 2023 was -4.49%, a 132.75% decline from 2022.
• NRG Energy average operating margin for 2022 was 13.71%, a 20.9% decline from 2021.
• NRG Energy average operating margin for 2021 was 11.34%, a 18.59% increase from 2020.

Operating margin can be defined as operating margin measurement of what proportion of a company's revenue is left over after paying for variable costs of production such as wages, raw materials, etc.