At www.dailygalaxy.com/my_weblog/2016/07/is-jupiters-volcanic-moon-io-poise… … in 2001 an eruption from the Surt volcano on the Jupiter facing hemisphere of Io had an estimated output of 78,000 Gigawatts of energy. Earthbound volcanoes pan out at around 12 Gigawatts.
Surt Volcano
31 July 2016Astronomy