From the article: VISA Network Statistics VISA's estimated annual electricity consumption (TWh) 0.54 Number of U.S. households that could be powered by VISA

From the article: VISA Network Statistics VISA's estimated annual electricity consumption (TWh) 0.54 Number of U.S. households that could be powered by VISA 50,000 Electricity consumed per transaction (KWh) 0.00651 Number of seconds the electricity consumed by 1 VISA transaction could power 1 U.S. household 19 Number of VISA transactions that could be powered with the electricity consumed by 1 Bitcoin transaction 20,983 `