This session at the Geothermal Energy Program Review X: Geothermal Energy and the Utility Market consisted of five papers: 'Reservoir Technology' by Joel L. Renner; 'LBL Research on the Geysers: Conceptual Models, Simulation and Monitoring Studies' by Gudmundur S. Bodvarsson; 'Geothermal Geophysical Research in Electrical Methods at UURI' by Philip E. Wannamaker; 'Optimizing Reinjection Strategy at Palinpinon, Philippines Based on Chloride Data' by Roland N. Horne; 'TETRAD Reservoir Simulation' by G. Michael Shook.