Description
qualifiedMw = nameplateMw*deratingFraction; payment = qualifiedMw*pricePerMw.
Energy contracts and credit accounts distinguish quantities accrued, used, available, curtailed, expired or qualified. A numeric balance applies an explicit convention; it does not establish which contractual or market rules actually apply.
qualifiedMw = nameplateMw*deratingFraction; payment = qualifiedMw*pricePerMw.
When to use this tool
Use Capacity Market Derating Supplied Factor when reconciling a specified energy credit, allocation or settlement term.
How to use the tool and how it works
- Enter nameplateMw, deratingFraction, pricePerMw. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read qualifiedMw, payment. Use the output convention below.
Require nonnegative nameplateMw and deratingFraction in [0,1]. qualifiedMw = nameplateMw*deratingFraction; payment = qualifiedMw*pricePerMw.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| nameplateMw | Nameplate Mw | Required. Finite number; minimum 0. |
| deratingFraction | Retained qualifying capacity fraction in [0,1], not the fraction lost. | Required. Finite number; minimum 0; maximum 1. |
| pricePerMw | Price Per Mw | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| qualifiedMw | Qualified Mw | Required. Finite number. |
| payment | Payment | Required. Finite number. |
{
"input": {
"nameplateMw": 100,
"deratingFraction": 0.8,
"pricePerMw": 50000
},
"output": {
"qualifiedMw": 80,
"payment": 4000000
}
}Limitations and assumptions
- The factor is the retained qualifying fraction, not the fraction lost. Qualification, capacity-credit methodology and payment rights are supplied assumptions.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review actual program rules, contract terms and dated records before treating a calculated balance or payment as due.
References
Similar or alternative tools
- Capacity Payment Availability Adjustment Term
availability = availableHours/contractedHours; payment = capacityKw*paymentPerKw*availability.
- Capacity Price Settlement Base Token
settlementQuantity = capacity*hours, multiplying by availability only when applyAvailability is true.