Demand, as reported by the EIA for Liquid Natural Gas Capacity, will remain pretty stable in 2018. However, it appears that demand is set to spike pretty sharply in 2019:
We believe that natural gas prices will remain relative stable in 2018 as supply is strong. Keep in mind however that exports are at an all time high, and less and less consumers are utilizing coal. We view this as bullish long-term.
One way to play this could be UNG or the levered UGAZ, but we prefer you to consider a nat gas stock such as CHK, SWN, or RRC. We would even consider COG a potential choice.