Description
Calculate a supplied emissions-permit bank balance.
Environmental valuation separates measured quantities, supplied unit values, accounting flows and assumed counterfactuals. A permit balance differs from a verified registry holding, and an avoided-tonne cost requires a defined baseline and cost boundary. Income-adjusted benefit transfer depends on a supplied elasticity rather than establishing transferable welfare benefits.
Calculate a supplied emissions-permit bank balance.
When to use this tool
Use Emissions Permit Bank Balance when you already have openingPermits, issued, purchased, sold, surrendered and need to calculate a supplied emissions-permit bank balance.
How to use the tool and how it works
- Enter openingPermits, issued, purchased, sold, surrendered. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read closingPermits. Use the output convention below.
Require all flows and opening balance nonnegative; return opening+issued+purchased-sold-surrendered.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| openingPermits | Opening Permits | Required. Finite number; minimum 0. |
| issued | Issued | Required. Finite number; minimum 0. |
| purchased | Purchased | Required. Finite number; minimum 0. |
| sold | Sold | Required. Finite number; minimum 0. |
| surrendered | Surrendered | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| closingPermits | Closing Permits | Required. Finite number. |
{
"input": {
"openingPermits": 100,
"issued": 20,
"purchased": 10,
"sold": 5,
"surrendered": 80
},
"output": {
"closingPermits": 45
}
}Limitations and assumptions
- Negative closing balances are retained. Matching permit classes, periods and units are assumed; no registry balance or compliance obligation is verified.
- 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
Use the complete emissions, cost, valuation and registry records for an actual environmental assessment. Review the relevant accounting boundary and applicable rules before combining local payment, exemption or unit-benefit terms into a policy conclusion.
References
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