deeper, faster, cheaper

When TEY gets around to drilling into the granite (some may say if) the technology could be a lot cheaper than it is today

http://www.climatespectator.com.au/commentary/deeper-faster-cheaper

"A Kalgoorlie-based drilling company, Coretrack, believes new drilling technology that it is has unveiled in the past two months could shave millions of dollars off the costs of drilling for geothermal resources, and enable aspiring developers to prove up resources at a fraction of the cost they currently face.

If proven, it will be a critical breakthrough for the Australian geothermal industry, which has been stranded at the starting gate because of the huge up-front costs of drilling programs, and the reluctance of investors to commit large sums to high-risk new technology."