For a few years now, U.S. natural gas producers have benefited from the electric-power sector’s shift from coal-fired plants toward gas-fired ones. The ongoing transition makes sense. Not only is gas-fired generation cleaner, it’s mostly been cheaper than the coal alternative. Better still, gas turbines and combined-cycle plants are very flexible companions to all those new wind farms and utility-scale solar facilities, whose variable output requires at-the-ready replacement power when the wind’s not blowing and the sun’s not shining. But with the continued push by many state regulators — and many utilities — for lower-carbon generation fleets, gas-fired plants are facing a growing challenge from energy storage, mostly in the form of very big lithium-ion batteries. Today, we look into the increasing use of large-scale batteries in utility settings and whether they might pose a serious threat to gas-fired power in the 2020s and beyond.

