Geothermal handbook: PlanninG and Financing power Generation t e c h n I c a L r e p o r t 2 / 2

TOTAL
142
196
274
In US$ Million per MW Installed
2.8
3.9
5.5
Source | Authors.
16
Costs for survey depend heavily on size and accessibility of area. Costs for EIA depend on country regulations.
17
Depending on methods used and accessibility and size of area.
18
For 3 to 5 drillings with variable depths and diameter, from slim hole to full-size production wells (over 8 inch diameter).
19
Studies and contracts provided by external suppliers or own company. Conditions and regulations of relevant country.
20
Depending on depth, diameter, and fluid chemistry, casings and wellhead requirements in terms of pressure and steel material/coating. 
Also influenced by underground and fractures (drilling difficulty and time).
22
Depending on distance from plant to transmission grid access point, and on distance between boreholes and power plant.
23
Standard industrial process. Power plant may need fine tuning for some time and minor adaptations. For high estimate, major changes, 
repairs and improvements are needed to supply power according to PPA.
24
The term “Levelized“ refers to average costs discounted over the project life cycle, usually 20 to 30 years, including all costs.

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G e o t h e r m a l H a n d b o o k : P l a n n i n g a n d F i n a n c i n g P o w e r G e n e r a t i o n