El Salvador explores bitcoin mining powered by volcanoes

  • A journalist takes a photo of the cooling systems at La Geo Geothermal Power Plant in Berlin municipality, Usulutan department, El Salvador, Friday, Oct. 15, 2021. The government announced that it has installed 300 processors at this plant to "mine" cryptocurrency, and is using geothermal resources from the country’s volcanos to run the computers that perform the calculations to verify transactions in bitcoin, recently made legal tender. (AP Photo/Salvador Melendez)

  • A state worker closes a container holding processors used for bitcoin calculations at the La Geo Geothermal Power Plant in Berlin municipality, Usulutan department, El Salvador, Friday, Oct. 15, 2021. The government announced that it has installed 300 processors at this plant to "mine" cryptocurrency, and is using geothermal resources from the country’s volcanos to run the computers that perform the calculations to verify transactions in bitcoin, recently made legal tender. (AP Photo/Salvador Melendez)

  • Some of the processors used for bitcoin calculations fill a container at the La Geo Geothermal Power Plant in Berlin municipality, Usulutan department, El Salvador, Friday, Oct. 15, 2021. The government announced that it has installed 300 processors at this plant to "mine" cryptocurrency, and is using geothermal resources from the country’s volcanos to run the computers that perform the calculations to verify transactions in bitcoin, recently made legal tender. (AP Photo/Salvador Melendez)

  • A state employee works amid the cooling systems at La Geo Geothermal Power Plant in Berlin municipality, Usulutan department, El Salvador, Friday, Oct. 15, 2021. The government announced that it has installed 300 processors at this plant to "mine" cryptocurrency, and is using geothermal resources from the country’s volcanos to run the computers that perform the calculations to verify transactions in bitcoin, recently made legal tender. (AP Photo/Salvador Melendez)

  • The La Geo Geothermal Power Plant operates in Berlin municipality, Usulutan department, El Salvador, Friday, Oct. 15, 2021. The government announced that it has installed 300 processors at this plant to "mine" cryptocurrency, and is using geothermal resources from the country’s volcanos to run the computers that perform the calculations to verify transactions in bitcoin, recently made legal tender. (AP Photo/Salvador Melendez)

BERLIN, El Salvador — At a geothermal power plant near El Salvador’s Tecapa volcano, 300 computers whir inside a trailer as they make complex mathematical calculations day and night verifying transactions for the cryptocurrency bitcoin.