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‘Green Bitcoin Mining’: The Big Profits In Clean Crypto

Christopher HelmanForbes StaffEnergy

Forbes | 2021-08-02

 

This story appears in the August/September 2021 issue of Forbes Magazine. Subscribe

Bitcoin is infamous for wasting enough electricity to add 40 million tons of carbon dioxide to the atmosphere a year — but now, a growing cadre of U.S. miners are developing green, and lucrative, new strategies worth a fortune all their own.

by Chris Helman

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^{(IMAGE ABOVE) Bill Spence (left) and Greg Beard on a Russellton, Pennsylvania, coal waste pile left by a mine that powered 20th-century Pittsburgh steelmakers. They’re burning this polluting “gob” to mine bitcoin.}

 

Here ya go: "Growing up in rural western Pennsylvania in the early 1970s, Bill Spence played with his pals on piles of coal waste, oblivious to the toxic heavy metals right under his feet. After working as an oil industry engineer out west, he returned home in the 1990s and found the piles—known as “gob,” for “garbage of bituminous”—still pockmarking the landscape. The present worry is that these unlined pits are leaching deadly carcinogens into the groundwater—or, worse, that they will catch fire and start polluting the air too. (Of the 772 gob piles in Pennsylvania, 38 are smoldering.) 

So Spence, now 63, set out on a mission to whittle down the piles, restore the land—and make money doing it. In 2017, he bought control of the Scrubgrass Generating power plant in Venango County, north of Pittsburgh, which was specially designed to combust gob. But gob isn’t a very good fuel, and the plant was barely viable. Later that year, after being diagnosed with pancreatic failure and kidney cancer (which he speculates may have been linked to his early gob exposure), he stepped back from the business. Bored, he started dabbling in cryptocurrencies and soon had a eureka moment: He could make the Scrubgrass numbers work by turning gob into bitcoin . . ."

 

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