rockist,your not wrong in the sense more transparency would be...

rockist,

your not wrong in the sense more transparency would be handy however if you look hard enough you can find the details. i aint going to sit here finding you a link so search and will find.

Penulis : Agung Bayu Kusumo
NIP : 7907003Z
THE FEASIBILITY OF GEOTHERMAL POWER PLANT IN INDONESIA
(CASE STUDY: 165 MW OF NGEBEL GEOTHERMAL POWER PLANT)
find this pdf - quite comprehensive, detailed wells 200C at 500 meters.

if you look harder you will find the sokoria/mutubusa pre feasibility by JICA - looks good to me. sokoria has a gradient of 38DegC per 100m depth...