The “need for backup power and peaking power demand” increased in the short term, amid blackouts in California, lifting usage of natural gas, he says.

On Aug. 31, October natural-gas futures NGV20, -4.29% settled at $2.63 per million British thermal units, with front-month prices climbing by roughly 46% for the month to date. They posted the largest one-month percentage rise since September 2009, when prices rose 62.6%, according to Dow Jones Market Data.

Prices saw a big increase at the beginning of August, buoyed by “strong demand from natural gas-fired power generation,” according to a monthly report from the Energy Information Administration released on Aug. 11. The EIA estimates that natural-gas consumption for power generation rose to 43.6 billion cubic feet per day in July 2020, “higher than any month on record.”

Still, a decline in industrial natural-gas consumption, which fell by 1.4 billion cubic feet per day in July from a year earlier, likely due to slower economic activity, partially offset strength in consumption from electric power, the EIA said.

Meanwhile, the “regulatory climate” has limited future supply growth, says McNally. Duke Energy Corp. DUK, -1.40% and Dominion Energy Inc. D, -0.79% cancelled the Atlantic Coast Pipeline, which would have “taken natural gas from Appalachia to the Carolinas,” he says.

Companies that produce natural gas, as well as the number of active natural-gas drilling rigs, have also failed to respond to higher prices, he said. “Natural-gas drilling remains at multiyear lows”—likely due in part to financial issues, with Chesapeake Energy Corp. CHKAQ, -6.39%, a major producer, filing for bankruptcy, he says.

Natural-gas production has fallen as producers have cut back on drilling and completion activities as a result of lower oil and natural-gas prices, according to the EIA, which estimates that output declined to 86.8 billion cubic feet per day in July, down 9.5 billion from the peak in November of 2019. That, combined with the rise in power generation demand, contributed to lower-than-average U.S. supply increases in July, it said. Even so, for the week ending Aug. 21, natural-gas inventories stood around 20% above the year-ago level.

The market will be looking to natural-gas output that’s associated with oil production, says McNally. “Additional supplies of natural gas have emerged from the Permian Basin that produces natural gas associated with targeted oil production,” he says. “That associated gas supply has come off with oil production in recent months, but it is something we will be watching going ahead.”

Meanwhile, Hurricane Laura, which made landfall in Louisiana in late August, also contributed to the climb in natural-gas prices, says Marshall Steeves, energy markets analyst IHS Markit, with the resulting production decline expected to be met with a similar fall in demand due to power losses.

Prices for natural gas have climbed by nearly 80% from the year-to-date low in late June of around $1.48 Btus. However, the natural-gas supply surplus “remains formidable with the summer cooling season drawing to a close in September,” which is a transitional month, says Steeves.

The natural-gas price rally may be “short-lived, absent another heat wave or supply disruption,” he says.