Others following the gerthermal sector might be interested in a specific geothermal blog at http://irblog.blogs.com/geothermalpower/
in a recent article about NGP, their Pumpernickle project jointly owner with Sierra georthermal (SRA)...and their Blue Mountain project is ready for product 2008 with with power purchase agreements and interconnection agreements.
Another company mentioned in this tech sector Raser Tech.
I'm still gathering info and no real DD done yet