Several months ago, Green Rock announced its Blanche-1 exploration well in the permit had recorded the hottest temperatures drilled to date in granite in Australia outside the Cooper Basin.
The PACE (plan for accelerating exploration) grant will help fund next year's drilling in an area several kilometres away from Blanche-1, in which there was a greater potential thickness of insulating sediments, according to Green Rock.
"These sediments cover the heat generating granite proven by the recent drilling of Blanche-1," managing director Adrian Larking said.
"This could result in even higher temperatures and at lower depths than in Blanche-1, which would reduce production drilling costs and improve the overall economics of the geothermal energy project."
Green Rock' tenements are near a high voltage transmission line, which connects to the National Electricity Grid, and a similar distance from the Olympic Dam mine.