Parasitic load tuning to ~15%; Sensitivity & Discussion updates

docs/Fervo_Project_Cape-5.md.jinja

@@ -504,6 +504,7 @@ Including these may reduce the levered IRR.
 1. Seasonal and Hourly Performance Granularity: As noted in the Surface Plant Parameters, this study uses a fixed annual average ambient temperature. It does not model the seasonal or hourly impacts on air-cooled condenser efficiency. In reality, power output would likely dip during peak summer hours and increase during winter. Future versions of GEOPHIRES may add support for these considerations; [click here](https://github.com/NatLabRockies/GEOPHIRES-X/issues/395) to view the relevant GEOPHIRES tracking issue on GitHub.
 1. Redrilling Assumptions: Management of thermal decline is modeled as periodic redrilling events that reset the reservoir's heat content to initial conditions at intervals determined by the `Maximum Drawdown` parameter. The cost of these events is amortized into a uniform annual operating expense. In reality, these events may be scheduled as discrete capital-intensive campaigns punctuated by years of lower spending, or as a continuous program of make-up well drilling to mitigate decline. [Click here](https://github.com/NatLabRockies/GEOPHIRES-X/issues/381) to view the relevant GEOPHIRES tracking issue on GitHub.
 1. Reservoir Modeling Fidelity: The base case utilizes the Gringarten analytical model, which produces a characteristic thermal plateau maintained until a sharp breakthrough event. A key open question is whether this idealized profile provides an acceptably accurate approximation of drawdown over time, or if it masks the gradual dispersion caused by flow channeling and heterogeneity. Future work should evaluate whether Gringarten remains the optimal scoping proxy, or if an alternative analytical solution[^alt-analytical-solution-proposal] would offer a superior balance of speed and realism by better mimicking the shape of numerical simulation outputs.
+1. ORC Efficiency: The power generation results rely on the GEOPHIRES built-in supercritical ORC efficiency correlation, which assumes the selection of an optimal working fluid for each specific geofluid temperature. For further details, please refer to the [Surface Plant section in the Theoretical Basis for GEOPHIRES](Theoretical-Basis-for-GEOPHIRES.html#surface-plant).
 
 [^alt-analytical-solution-proposal]: Possible alternatives might include Residence Time Distribution (RTD) modeling, or a parameterized profile generator based on the Bezier curve approach used in the "ResFrac Profile" variant.