We provide allocated costs at preset project sizes (MW), however, if you want to calculate your allocated costs based on a more specific project size (MW), then follow the steps below.
Calculate the allocated cost for each limiting element up to your desired project size. Then, sum together those allocated costs to get your total allocated cost for a specific project size (MW).
- MW Impact: DFAX * Project Size (MW)= MW Impact
- Project Share %: MW Impact / Contingency Rating (MVA) = Project Share Percentage
- Allocated Cost: Project Share * Upgrade Cost = Allocated cost
You must mitigate all constraints identified for MW amounts at or lower than your project size.
Here’s an example showing how to calculate each portion:
| Monitored Facility | Distribution Factor (DFAX) | Contingency Rating (MVA) | Cost to Upgrade the Monitored Facility ($ Million) | MW Before | MW After |
|---|---|---|---|---|---|
| 000000 Substation A 230 1111111 Substation B 230 1 | 0.05 | 432 | 6 | 90 | 120 |
For a 100 MW project, there is one limiting element we must address to achieve the target 100 MW project size, so the math would be as follows:
- MW Impact =DFAX * Project Size (MW) 0.05 * 100 = 5 MW
- Project Share: MW Impact / Contingency Rating = 5 / 432 = 1.16%
- Allocated Cost: Project Share * Upgrade Cost = 0.0116 * $6,000,000 = $69,600
If there were multiple limiting elements at or below our target project size, then we would need to add up each of their respective costs to get the final allocated cost amount.