Crypto mining occurs mainly where electricity is either cheap or free. Hydroelectric and Geothermal tends to produce the cheapest energy so many large mining outfits were relocated next to Hydroelectric and Geothermal plants. Many are in remote northern areas where computer cooling costs are less expensive too. $HIVE blockchain technologies was running enough ethereum miners to mine 7675 ethereum ($11.5 Million dollars worth) during the 3 month period ending in June 30, 2022 according to their quarterly earnings report. 100% of all of their miners used renewable energy sources.