Definition
P99 is the 99th-percentile annual energy yield estimate — exceeded in 99% of years. Used for ultra-conservative stress testing, government-backed loans, and worst-case scenario analysis.
Key Takeaways
- P99 = 99th-percentile annual yield.
- Used for stress testing, government loans.
- P99 = P50 − 2.33 × σ.
- Pension funds and conservative lenders use.
- Standard EYA reports P50, P75, P90, P99.
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