Definition
P75 is the 75th-percentile annual energy yield estimate for a solar project — the value the plant exceeds in 3 out of 4 years. Used as an intermediate confidence band between P50 (median) and P90 (lender-conservative).
Key Takeaways
- P75 = 75th-percentile annual energy yield.
- Between P50 (median) and P90 (lender-conservative).
- Used in some commercial PPA hedge structures.
- Formula: P75 = P50 − 0.67 × σ.
- Less common in finance than P50 and P90.
Frequently Asked Questions
2 commonly searched questions about P75.
What is P75?
75th-percentile annual energy — exceeded 75% of years. Computed as P50 − 0.67 × σ assuming normal distribution.
When is P75 used?
Some commercial PPA hedge structures, IPP risk modeling. Less common than P50 (equity) and P90 (debt).
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