A green-energy startup says it can solve bitcoin’s surging electricity consumption without boosting pollution, an issue threatening to halt the meteoric rise of the virtual currency.
austria’s hydrominer gmbh raised $2.8 million after closing its first initial coin offering on wednesday, according to its website. the cash will be used to install high-powered computers at hydropower plants, where the company says it can mine new digital currencies at a cheaper cost and with lower environmental impacts. “a lot of people are worried about the high energy consumption of cryptocurrencies,” said nadine damblon, the co-founder and chief executive officer of hydrominer in vienna. “it’s a huge factor.”the electricity needed by the global network of computers running the blockchain technology behind bitcoin has risen more than two-fifths since the beginning of october, to about 28 terawatt-hours a year, according to the digiconomist website. that’s more power than all of nigeria’s 186 million people consume each year. much of the electricity feeding bitcoin projects is coming from generators fed by fossil fuels.
even as bitcoin approaches $8,000, the price required for mining to be marginally profitable may reach a jaw-dropping $300,000 to $1.5 million by 2022, according to christopher chapman, an analyst at citigroup inc. he based his estimate on current growth rates for mining and the electricity consumed by computers doing the work. at that pace, the power consumption implied by bitcoin’s growth may eventually match what japan uses. enter hydrominer, a six-person startup that’s already running cryptocurrency servers at two disused austrian hydropower mills. it’s outfitting modular shipping containers with servers and software that can be placed at power stations. instead of air conditioning, they circulate cold alpine currents through piping to keep their equipment cool.
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