• Southwest Gas average operating margin for 2023 was 1.53%, a 75.2% increase from 2022.
• Southwest Gas average operating margin for 2022 was 6.17%, a 48.5% decline from 2021.
• Southwest Gas average operating margin for 2021 was 11.98%, a 4.08% decline 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.