During the past 12 months (July 2021–June 2022), the monthly average Henry Hub natural gas spot price, which is a U.S. benchmark, nearly doubled, according to data from Refinitiv Eikon. The price rose from $3.84 per million British thermal units (MMBtu) in July 2021 to $7.70/MMBtu in June 2022. The average inflation-adjusted (real) monthly Henry Hub spot price reached a 12-month high of $8.17/MMBtu in May 2022, the highest price since November 2008. Prices have generally increased since mid-2021 because demand growth has outpaced domestic production growth, keeping inventory levels low.