GEOPHIRES/tests/examples/example_SAM-single-owner-PPA-2.txt at main · softwareengineerprogrammer/GEOPHIRES · GitHub

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# Example: SAM Single Owner PPA Economic Model: 400 MWe BICYCLE Comparison
# This example is adapted from Fervo_Project_Cape-3, allowing for comparison between BICYCLE and SAM economic models.
# Note that this example produces an unrealistically high IRR of ~60%. This is an artifact of using Fervo_Project_Cape-3's
# BICYCLE parameters and assumptions as-is with the SAM Economic Model (such as starting electricity rate = 15 cents/kWh).
# See example_SAM-single-owner-PPA for parameters formulated with more refined assumptions appropriate for the
# SAM Economic Model.
# See "SAM Economic Models" in GEOPHIRES documentation: https://softwareengineerprogrammer.github.io/GEOPHIRES/SAM-Economic-Models.html


# *** ECONOMIC/FINANCIAL PARAMETERS ***
# *************************************
Economic Model, 5, -- SAM Single Owner PPA

Starting Electricity Sale Price, 0.15
Ending Electricity Sale Price, 1.00
Electricity Escalation Rate Per Year, 0.004053223
Electricity Escalation Start Year, 1

Fraction of Investment in Bonds, .5
Inflated Bond Interest Rate, .05
Discount Rate, 0.07

Inflation Rate, .02
Inflation Rate During Construction, 0.05

Combined Income Tax Rate, .28
Investment Tax Credit Rate, .3
Property Tax Rate, 0

Surface Plant Capital Cost Adjustment Factor, 0.71, -- $1900/kW: https://betterbuildingssolutioncenter.energy.gov/sites/default/files/attachments/Waste_Heat_to_Power_Fact_Sheet.pdf
Exploration Capital Cost, 30
Well Drilling and Completion Capital Cost, 3.84, -- Assume cost continues to decrease from $4.8M/well (https://houston.innovationmap.com/fervo-energy-drilling-utah-project-2667300142.html)
Reservoir Stimulation Capital Cost, 234, -- 78 wells @ $3M/well


# *** SURFACE & SUBSURFACE TECHNICAL PARAMETERS ***
# *************************************************
End-Use Option, 1
Plant Lifetime, 20
Power Plant Type, 2, -- Supercritical ORC

Reservoir Model, 1
Reservoir Volume Option, 1
Reservoir Density, 2800
Reservoir Depth, 8500 feet, -- https://pangea.stanford.edu/ERE/db/GeoConf/papers/SGW/2024/Fercho.pdf
Reservoir Heat Capacity, 790
Reservoir Thermal Conductivity, 3.05
Reservoir Porosity, 0.0118
Reservoir Impedance, 0.001

Number of Fractures, 149
Fracture Shape, 4
Fracture Height, 2000
Fracture Width, 10000
Fracture Separation, 30

Number of Segments, 1
Gradient 1, 74, -- temperature at 8500 ft: 200 degC (https://pangea.stanford.edu/ERE/db/GeoConf/papers/SGW/2024/Fercho.pdf); 228.89 degC @ 9824 ft (https://doi.org/10.31223/X5VH8C)

Number of Injection Wells, 39
Number of Production Wells, 39
Production Flow Rate per Well, 120, -- peak flow reported in paper
Production Well Diameter, 7
Injection Well Diameter, 7
Well Separation, 365 feet

Ramey Production Wellbore Model, 1

Injection Temperature, 60 degC
Injection Wellbore Temperature Gain, 3
Plant Outlet Pressure, 1000 psi
Production Wellhead Pressure, 325 psi
Utilization Factor, .9
Water Loss Fraction, 0.05
Maximum Drawdown, 1
Ambient Temperature, 10 degC
Surface Temperature, 10 degC
Circulation Pump Efficiency, 0.80

Well Geometry Configuration, 4
Has Nonvertical Section, True
Multilaterals Cased, True
Number of Multilateral Sections, 3
Nonvertical Length per Multilateral Section, 4700 feet

# *** SIMULATION PARAMETERS ***
# *****************************
Maximum Temperature, 500
Time steps per year, 10