20171004Wyoming Attachment OCS 2.2 1st Supplement.docx

OCSData Request 2.2For each of the wind resources the Company proposes to repower (i.e., Glenrock I, Glenrock II, Rolling Hills, etc.), please provide in schedule form the following information:Amount included in rate base in the Company’s adjusted test year in the most recent rate case. This should be broken down by plant in service, accumulated depreciation and ADIT as well as the net resulting balance included in rate base. This should also include the impacts of the adjustments to the wind facilities for plant additions shown on Exhibit RMP__(SRM-3), page 8.6.23, submitted with the Company’s filing in the rate case.The amount of plant in service, accumulated depreciation, ADIT and resulting net book value amount (PIS – ADR – ADIT) as of the most recent date available;The projected amount of plant in service, accumulated depreciation, ADIT and resulting net book value amount (PIS – ADR – ADIT) anticipated immediately prior retiring the existing assets being replaced. Identify the date being used in the projection.
1st Supplemental Response to OCS Data Request 2.2
Further, to the Company’s response to OCS Data Request 2.2 provided on August 14, 2017, the Company provides the following:Please refer to Attachment OCS 2.2 -2 1st Supplemental for the July 31, 2017 balances for the wind resources that the Company proposes to repower.Please refer to Attachment OCS 2.2 -3 1st Supplemental for the balances as of the repower date for the wind resources that the Company proposes to repower.