Fervo_Project_Cape-4.md minor copy editing

Author: softwareengineerprogrammer

docs/Fervo_Project_Cape-4.md

@@ -1,6 +1,6 @@
 # Case Study: 500 MWe EGS Project Modeled on Fervo Cape Station
 
-The GEOPHIRES example `Fervo_Project_Cape-4` models a 500 MWe EGS Project based on
+The GEOPHIRES example `Fervo_Project_Cape-4` is a case study of a 500 MWe EGS Project modeled on
 on Fervo Cape Station with its April 2025-announced
 [upsizing from 400 MW to 500 MW](https://fervoenergy.com/fervo-energy-announces-31-mw-power-purchase-agreement-with-shell-energy/).
 Case study inputs are formulated using a combination of publicly available data, extrapolations, and estimates.
@@ -16,7 +16,7 @@ interactively explore the case study in the GEOPHIRES web interface.
 ## Approach & Methodology
 
 The case study is constructed to be representative of a 500 MWe EGS project similar to Cape Station,
-but is not intended to be an exact facsimile.
+although it is not intended to be an exact facsimile.
 This is because not all relevant data points are publicly available (e.g. full PPA terms) while others may not be
 applicable
 outside of Cape Station's first-of-a-kind status (such as drilling costs of initial wells which were more expensive
@@ -50,7 +50,7 @@ in source code for the full set of inputs.
 | Reservoir Stimulation Capital Cost Adjustment Factor                  | 2.66                                                                                                                   | Estimated cost of ~$2M per well. Typical range for Nth-of-kind projects may be $0.5–2M.                                                                                                                                                                                                                                                                                  |
 | Capital Cost for Power Plant for Electricity Generation               | $1900/kW                                                                                                               | US DOE, 2021.                                                                                                                                                                                                                                                                                                                                                            |
 | Discount Rate                                                         | 12%                                                                                                                    | Typical discount rates for high-risk projects may be 12–15%                                                                                                                                                                                                                                                                                                              |
-| Inflated Bond Interest Rate (debt annual interest rate)               | 5.6%                                                                                                                   |                                                                                                                                                                                                                                                                                                                                                                          |
+| Inflated Bond Interest Rate                                           | 5.6%                                                                                                                   | Typical debt annual interest rate                                                                                                                                                                                                                                                                                                                                        |
 | Fraction of Investment in Bonds (percent debt vs. equity)             | 60%                                                                                                                    | Approximate remaining percentage of CAPEX with $1 billion sponsor equity per Matson, 2024. Note that this source says that Fervo ultimately wants to target "15% sponsor equity, 15% bridge loan, and 70% construction to term loans", but this case study does not attempt to model that capital structure.                                                             |
 | Exploration Capital Cost                                              | $30M                                                                                                                   | Estimate significantly higher exploration costs than default correlation in consideration of potential risks associated with second/third/fourth-of-a-kind EGS projects                                                                                                                                                                                                  |
 | Investment Tax Credit Rate (ITC)                                      | 30%                                                                                                                    | Same as 400 MWe case study (Fervo_Project_Cape-3)                                                                                                                                                                                                                                                                                                                        |