Vakhtang Gogokhia’s plan to extract cryptocurrencies from the netherworld of cyberspace relies on a strategy familiar to many old-school manufacturers who use a lot of energy — the cheaper the fuel, the better. That’s why Gogokhia, who heads a startup called Golden Fleece, put a cargo container with Chinese-built computers inside a dilapidated Soviet-era tractor factory in Georgia, about 60 miles (100 kilometers) east of the Black Sea. The site made sense for running servers 24 hours a day because it has access to low-cost electricity generated by water flowing from the nearby Caucasus Mountains. There also are plans for solar panels and wind turbines. Les mer her