Gas stoves are contributing more to global warming than previously thought. That's because even when they're not running, they're leaking. A new study finds that leaks from U.S. gas stoves add 2.6 million tons of methane to the air each year.
That methane is on top of the 6.8 million tons of carbon dioxide that gas stoves emit into the air when they are in use and the gas is burned, the study said. Methane is a greenhouse gas that is dozens of times more potent than carbon dioxide but doesn’t stay in the atmosphere nearly as long and isn’t as plentiful in the air.
“That’s a big deal because we’re trying to really reduce our carbon footprint and we claim that gas is cleaner than coal, which it is,” said study lead author Eric Lebel, a scientist at PSE Healthy Energy, an Oakland nonprofit. But he said much of the benefit disappears when leaks are taken into account.
“Natural gas appliances are generally more energy- and cost-effective than their electric counterparts,” Maisano said.Jackson estimated that when all natural gas use and extraction is taken into account, about 100 million tons of gas leaks into the atmosphere. And the couple million tons from gas stoves “is meaningful. That’s a substantial part and it’s a part that we haven’t included accurately in the past.
Merrin, who wasn’t part of the study, said the emission of un-combusted methane is “clearly bad. From an emissions standpoint, cooking directly with gas is better than using a fossil fuel powered electric stove but worse than using a solar powered electric stove.”
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