Gross to net
Wake, electrical, availability, curtailment, icing, soiling, and future-loss assumptions are separated rather than hidden in one line.
Energy Yield Assessment
P50, P75, P90 without hand-waving.
A lender-grade EYA converts a wind climate into a project finance case. The service focuses on uncertainty, loss build-up, sensitivity tables, and the exact numbers the lender's technical advisor will challenge.
Full uncertaintypropagated in quadrature
P50 / P75 / P90decision outputs
Fixed-feescope locked
What the assessment covers
Uncertainty
Measurement, long-term, spatial, wake, and future-loss uncertainty are quantified and combined in quadrature.
Decision outputs
P50, P75, and P90 in GWh and net capacity factor terms, with sensitivity to the main assumptions.
Existing-data review
$6k-$10k
- Concise decision memo
- Key risks and assumptions
- Limited sensitivity analysis
Full bankable EYA
$15k-$25k
- Full uncertainty budget
- Spreadsheet output
- Review call
Complex or portfolio-grade
$30k-$60k+
- Complex terrain or CFD support
- Scenario analysis and revision cycles
- Lender-defense layer
How the case is built
- Start with the cleaned resource case and flow model output.
- Break losses and uncertainty out term by term.
- Document the ranges lenders will challenge first.
- Deliver the result in a format the finance team can use.
Frequently asked
What wake model do you use?
Jensen for flat single-cluster sites, Larsen for moderate complexity, and eddy-viscosity or RANS-based wake models when the site layout demands it.
Can the P90 feed directly into the financial model?
Yes. Net AEP in GWh and capacity factor terms is delivered in PDF and structured spreadsheet form.
How do you handle future degradation?
Blade soiling and age-related degradation are treated as future-loss uncertainty terms, with assumptions sourced to OEM data or published operational studies.
Need an EYA before the lender asks for one?
Book a scoping call and the uncertainty drivers, sensitivity case, and timetable can be set up quickly.