WECC StaffConference Call

December 15, 2010

Substation Cost Revisions

Cost Estimates Currently Available

● From E3’s capital cost estimating tool: link

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Enhancements Desired

● Distinguish between substation work required in existing versus new substations

● Provide cost estimate for transformers that may be required

● Other cost breakouts needed?

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Using the New Cost Estimates

● External to the existing E3 spreadsheet?

● Determine for each project, use appropriate cost estimate: Terminations:

#1 – Existing/New Substation?o Transformers required?

#2 – Existing/New Substation?o Transformers required?

Intermediate Substations: #1 – Existing/New Substation?

o Transformers required?

Repeat for n intermediate substations

● Simple approach, so does this improve our cost estimates?

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