The price of natural gas has changed significantly over the last forty years reflecting its volatility or instability. The average annual prices for the residential, commercial, and industrial sectors mimicked each other's movements and kept a steady price spread. From 2020 to 2021, the electric power sector price increased $7.32 or four–fold, the price of natural gas in the residential sector increased $1.44 or 19.6 percent, the industrial sector price increased $1.36 or 38.5 percent, while the commercial sector price increased $1.14 or 22.9 percent.
In 2021, the electric power sector paid the highest price out of all the sectors at $9.62 per billion cubic feet. The residential sector's price was the next highest at $8.78 per billion cubic feet. The commercial sector's price was $6.12, and the industrial sector's price was $4.91 per billion cubic feet.
The prices are in nominal dollars to provide a better comparison.