Steps 4–5:
Step 1: Locate site
Operate system
Characterize and
Complete and verify
select site
circulation loop
Drill and log
Install operating
exploratory well
equipment
Steps 2–3:

Create reservoir

Drill injection well
Stimulate/create

reservoir

Drill

production well

FIGURE 3.4 Steps taken to recover geothermal energy via the EGS. (Adapted from Union
of Concerned Scientists, How Geothermal Energy Works, Union of Concerned Scientists,
Cambridge, MA, 2012; Office of Energy Efficiency and Renewable Energy, An Evaluation of
Enhanced Geothermal Systems Technology, US Department of Energy, Washington, DC, 2008.)