How to win the war on climate change

...If we move quickly enough to meet the goal of 80 percent clean power by 2030, then the world’s carbon dioxide levels would fall below the relative safety of 350 parts per million by the end of the century. The planet would stop heating up, or at least the pace of that heating would slow substantially. That’s as close to winning this war as we could plausibly get. We’d endure lots of damage in the meantime, but not the civilization-scale destruction we currently face. (Even if all of the world’s nations meet the pledges they made in the Paris accord, carbon dioxide is currently on a path to hit 500 or 600 parts per million by century’s end—a path if not to hell, then to someplace with a similar setting on the thermostat.)

To make the Stanford plan work, you would need to build a hell of a lot of factories to turn out thousands of acres of solar panels, and wind turbines the length of football fields, and millions and millions of electric cars and buses. But here again, experts have already begun to crunch the numbers. Tom Solomon, a retired engineer who oversaw the construction of one of the largest factories built in recent years—Intel’s mammoth Rio Rancho semiconductor plant in New Mexico—took Jacobson’s research and calculated how much clean energy America would need to produce by 2050 to completely replace fossil fuels. The answer: 6,448 gigawatts.

“Last year we installed 16 gigawatts of clean power,” Solomon says. “So at that pace, it would take 405 years. Which is kind of too long...” )

(Bill McKibben, Continues)