20171011Avista to Sierra Club 4-1.pdf

AVISTA CORPORATION
RESPONSE TO REQUEST FOR INFORMATION
JURISDICTION:
CASE NO:
REQUESTER:
TYPE:
REQUEST NO.:
IDAHO
AVU-E- 1 7-0 l /AVU-G -r7 -0 I
Sierra Club
Production Request
Siena Club: 4-1
DATE PREPARED: 101612017WITNESS: Clint Kalich
RESPONDER: James Gall
DEPARTMENT: Energy Resources
TELEPHONE: [phone]
REQUEST:
With reference to Avista's confidential response to Sierra Club Production Request2-4:
a. Please explain the meaning of "Incremental Cost" as used in the table provided,
and explain the components of this incremental cost and how it is calculated.
b. Please describe the components the O&M cost included in the "Fuel and O&M
Cost" column, and whether this includes fixed, variable, or both O&M costs.
c. Please provide more specific references than those provided in the text of the
response, including page numbers in the Company's FERC Form I andthe2017
IRP, for the data provided, and identify what data in the table came from which
source.
RESPONSE:
a. Incremental costs is the marginal cost of production at the plant, the company uses this
price for dispatch purposes. The components included in this calculation include
variable fuel costs and variable costs such as mercury control, lime, WET taxes,
scrubbers, water treatment, coal handling, ash, and other miscellaneous costs.
b. These costs include both fixed and variable O&M costs
c. FERC Form I data is on page 403 of the FERC form I report. Regarding the 2017IRP,
none of this data is reported in the report.
ldaho Public Utilities Commission
Otfice of the SecretarvRECEIVED
ocT I I ?017
Boise, ldaho