Operational risks
In addition to risks typical for any power plant, such as equipment breakdowns, a geothermal facility
faces risks during the operational phase that are unique to the geothermal sector. These risks are
mostly related to steam field operation and maintenance. In areas where wells have to be worked over
frequently and many make-up wells have to be drilled (for example due to heavy scaling from silica
saturation or corrosion), the costs of these activities can significantly affect the O&M costs and the
overall power generation costs.
In addition, similar to the case of oversizing the power plant, improper steam field operation practices
can lead to pressure drops and—in extreme cases—depletion of the geothermal reservoir.
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