While some bitcoin mining operations are now looking to nuclear power, the Associated Press reports, Bill Spence (and his company Stronghold Digital Mining) is creating crypto-mining hubs out of waste coal power plants. (Text-only version here):
The plant he had bought was in trouble. It was competing with cheap natural gas on the power grid and losing — endangering the 35 jobs at Scrubgrass Generating Station along with the effort to clean up millions of tons of leaching coal waste left behind by mining companies over the course of decades. The plant couldn’t just rely on the grid for revenue anymore, because the grid simply didn’t need its power all that often. Mr. Spence started to look for other customers…
Already, some power generators — finding they can make more money supplying electricity to Bitcoin-mining operations than selling it to the grid — are shifting focus. Energy Harbor, which owns the Beaver Valley Nuclear Plant in Beaver County, announced earlier this month that it will supply nuclear power to a Bitcoin-mining data center in Ohio. Talen Energy, owner of the Susquehanna Steam Electric Station in Luzerne County, is doing the same. The company said last month that it will develop a data center to mine digital currency that could use up to 300 megawatts, or 12% of the nuclear plant’s capacity. Bitcoin miners, in turn, are hyper cognizant of power prices and availability. Some are taking mobile units into the oil fields, hooking up their machines to run on natural gas, a byproduct of oil product that would otherwise be flared…
Today, Scrubgrass, an 85-megawatt blue box with a black smokestack in the hills of Scrubgrass Township, looks much like it did when it first opened in 1993 — except for the trailers filled with Bitcoin miners in the back… [T]here are about 3,000 cryptocurrency miners packed into retrofitted shipping containers behind the power plant, most of them owned by Stronghold and some that belong to other mining companies that buy power from the plant. Another 5,000 machines are scheduled to arrive next month. According to documents filed with the SEC, Stronghold is planning to operate 57,000 miners by the end of next year. In 2020, when the power plant seldom ran, Stronghold made more money from its Bitcoin operations than by selling Scrubgrass’s energy to the grid. During the first three months of this year, the trend reversed. It received almost $2 million from power sales and more than $1 million from its crypto datacenter…
Stronghold is buying another waste coal plant, Panther Creek Energy Facility in Carbon County, with plans to replicate its cryptomining data center there, and is eyeing a third.
The Associated Press notes that the waste-coal plants are powered by those thousands of acres of abandoned (and pollutant-emitting) coal piles left behind by earlier coal-powered plants, finally remediating them into reclaimable land. But with waste coal plants, there’s always a trade-off.
“In 2019, the last year with available federal data, Scrubgrass emitted the equivalent of 371,000 tons of CO2 — the greenhouse gas footprint of 80,000 cars driving for a year.”
Read more of this story at Slashdot.