Editing Pieee (section)

====Geotechnical issues in the creation of underground reservoirs for massive energy storage====
*'''Authors:''' Nasim Uddin (University of Alabama at Birmingham, USA)
*'''Contact email:''' nuddin@uab.edu
*'''Scope:''' Pumped storage is currently an economically viable alternative to the conventional above ground type of facility, and is made increasingly attractive by consideration of the reduced environmental impact, which the underground concept make possible. This paper is intended to provide an introduction to the engineering challenges of underground pumped storage.