20240118Final Approved Tariffs.pdf

1407 W. North Temple, Suite 330 Salt Lake City, UT 84116
January 4, 2024

VIA ELECTRONIC DELIVERY Commission Secretary Idaho Public Utilities Commission
11331 W. Chinden Blvd
Building 8 Suite 201A Boise, ID 83714 RE: COMPLIANCE FILING IN CASE NO. PAC-E-23-21
IN THE MATTER OF ROCKY MOUNTAIN POWER’S PROPOSED CHANGES TO ELECTRIC SERVICE REGULATION NO. 12 Attention: Commission Secretary
Pursuant to Order No. 36039 in the above referenced matter Rocky Mountain Power hereby
respectfully submits its compliance filing which includes updated tariffs for Electric Service Regulation No. 12. Informal inquiries may be directed to Mark Alder, Idaho Regulatory Manager at [phone].
Very truly yours, Joelle Steward
Senior Vice President, Regulation and Customer & Community Solutions
RECEIVED
2024 January 4 PM 2:12
IDAHO PUBLIC
UTILITIES COMMISSION

Fourth Revision of Sheet No. 12R.2 I.P.U.C. No. 1 Canceling Third Revision of Sheet No. 12R.2
Submitted Under Case No. PAC-E-23-21
ISSUED: January 4, 2024 EFFECTIVE: January 1, 2024
1. CONDITIONS AND DEFINITIONS (continued) (c) Engineering Costs -- (continued) If the Applicant or Customer requests changes that require additional estimates, they must advance the Company’s estimated Engineering Costs, but not less than the minimum specified in Schedule 300 for each additional estimate. The Company will not refund or credit this payment. (d) Extension -- A branch from, or a continuation of, a Company owned transmission or distribution line where a line has not been removed, at customer request, within the last five (5) years. An extension may be single-phase, three-phase, a conversion of a single-phase line to a three-phase line, the provision of additional capacity in existing lines, substations or
other facilities, or addition of new distribution or transmission facilities. The Company will own, operate and maintain all Extensions made under this regulation. (e) Extension Allowance -- The Extension Allowance is the portion of the Extension that the Company provides or allows without cost to the Applicant. The portion will vary with the class of service that the Applicant requests and the Applicant’s total load request, and is the
lesser of: the maximum potential extension allowance; or the Extension Cost. The Extension Allowance does not include costs resulting from: additional voltages; duplicate facilities; additional points of delivery; or any other Applicant requested facilities that add
to, or substitute for, the Company's standard construction methods or preferred route. An Extension Allowance will be provided only if the Company has reasonable assurance as to the permanent continuation of required revenue. The Extension Allowance is not available
to customers receiving electric service under special pricing contracts. (f) Extension Costs -- Extension Costs are the Company's total costs for constructing an Extension using the Company's standard construction methods, including services, transformers and meters, labor, materials and overheads. (g) Extension Limits -- The provisions of this regulation apply to Line Extensions that require standard construction and will produce sufficient revenues to cover the ongoing costs
associated with them. The Company will construct Line Extensions with special requirements or limited revenues under the terms of special contracts.
Examples of special requirements include, but are not limited to, unusual costs incurred for obtaining rights-of-way, overtime wages, use of special equipment and facilities, accelerated work schedules to meet the applicant's request, or non-standard construction requirements.
(Continued)
IDAHO PUBLIC UTILITIES COMMISSIONApproved EffectiveJan. 18, 2024 Jan. 1, 2024 Per ON 36061 and 36039 Monica Barrios-Sanchez Secretary

Fourth Third Revision of Sheet No. 12R.2 I.P.U.C. No. 1 Canceling ThirdSecond Revision of Sheet No. 12R.2
Submitted Under Case No. PAC-E-19-19E-23-21
ISSUED: November 22, 2019January 4, 2024 EFFECTIVE: February 21, 2020January 1, 2024
1. CONDITIONS AND DEFINITIONS (continued) (c) Engineering Costs -- (continued) If the Applicant or Customer requests changes that require additional estimates, they must advance the Company’s estimated Engineering Costs, but not less than the minimum specified in Schedule 300 for each additional estimate. The Company will not refund or credit this payment. (d) Extension -- A branch from, or a continuation of, a Company owned transmission or distribution line where a line has not been removed, at customer request, within the last five (5) years. An extension may be single-phase, three-phase, a conversion of a single-phase line to a three-phase line, the provision of additional capacity in existing lines, substations or
other facilities, or addition of new distribution or transmission facilities. The Company will own, operate and maintain all Extensions made under this regulation. (e) Extension Allowance -- The Extension Allowance is the portion of the Extension that the Company provides or allows without cost to the Applicant. The portion will vary with the class of service that the Applicant requests and the Applicant’s total load request, and is the
lesser of: the maximum potential extension allowance; or the Extension Cost. The Extension Allowance does not include costs resulting from: additional voltages; duplicate facilities; additional points of delivery; or any other Applicant requested facilities that add
to, or substitute for, the Company's standard construction methods or preferred route. An Extension Allowance will be provided only if the Company has reasonable assurance as to the permanent continuation of required revenue. The Extension Allowance is not available
to customers receiving electric service under special pricing contracts. (f) Extension Costs -- Extension Costs are the Company's total costs for constructing an Extension using the Company's standard construction methods, including services, transformers and meters, labor, materials and overheads. (g) Extension Limits -- The provisions of this regulation apply to Line Extensions that require standard construction and will produce sufficient revenues to cover the ongoing costs
associated with them. The Company will construct Line Extensions with special requirements or limited revenues under the terms of special contracts.
Examples of special requirements include, but are not limited to, unusual costs incurred for obtaining rights-of-way, overtime wages, use of special equipment and facilities, accelerated work schedules to meet the applicant's request, or non-standard construction requirements.
(Continued)

Fifth Revision of Sheet No. 12R.7 I.P.U.C. No. 1 Canceling Fourth Revision Sheet No. 12R.7
(continued) Submitted Under Case No. PAC-E-23-21
ISSUED: January 4, 2024 EFFECTIVE: January 1, 2024
2. RESIDENTIAL EXTENSIONS (continued) (e) Underground Extensions
The Company will construct underground Extensions when requested by the Applicant or if required by local ordinance or conditions. In addition to the requirements of the preceding sections, the Applicant must provide, at their expense, all trenching and backfilling, imported backfill material, conduits, and equipment foundations that the Company requires for the Extension. For conversion of any existing overhead facilities to underground, the terms of Section 6. Relocation or Replacement of Facilities apply. 3. NONRESIDENTIAL EXTENSIONS Applicant loads of a speculative nature or of questionable permanency either in duration or size of
load that exceed the Company’s engineering loading limits for one circuit at the local primary distribution voltage shall take delivery at the locally available transmission voltage (at or above 46,000 volts). (a) Extension Allowances – Delivery at 46,000 Volts and above
The Company will grant Customers taking service at 46,000 volts or greater an extension allowance of the meter, current transformers and potential transformers necessary to measure the Customer’s usage. Other than the extension allowance, the Customer is subject
to the same Extension provisions as a Customer who takes service at less than 46,000 volts. (b) Extension Allowances – Delivery at less than 46,000 Volts (1) Less than 1,000 kVA
The Company will grant Nonresidential Applicants requiring less than 1,000 kVA an Extension Allowance equal to nine (9) times the estimated average monthly revenue the Applicant will pay the Company. The Applicant must advance the costs
exceeding the Extension Allowance prior to the start of construction. The Company may require the Customer to pay a Contract Minimum Billing for five (5) years. Remote Service customers must pay a Contract Minimum Billing for as long as service is taken, but in no case less than five (5) years, nor more than 30 years. (2) 1,000 kVA or Greater, but less than 25,000 kVA
The Company will grant Nonresidential Applicants requiring 1,000 kVA or greater, but less than 25,000 kVA, an Extension Allowance equal to nine (9) times the estimated average monthly revenue the Applicant will pay the Company. The Applicant must advance the costs exceeding the Extension Allowance. Fifty percent of the advance is due when the contract is executed with the remaining balance due upon completion of the Extension.
IDAHO PUBLIC UTILITIES COMMISSIONApproved EffectiveJan. 18, 2024 Jan. 1, 2024 Per ON 36061 and 36039 Monica Barrios-Sanchez Secretary

Fifth Fourth Revision of Sheet No. 12R.7 I.P.U.C. No. 1 Canceling FourthFifth Revision Sheet No. 12R.7
(continued) Submitted Under Case No. PAC-E-19-19E-23-21
ISSUED: November 22, 2019January 4, 2024 EFFECTIVE: February 21, 2020January 1, 2024
2. RESIDENTIAL EXTENSIONS (continued) (e) Underground Extensions
The Company will construct underground Extensions when requested by the Applicant or if required by local ordinance or conditions. In addition to the requirements of the preceding sections, the Applicant must provide, at their expense, all trenching and backfilling, imported backfill material, conduits, and equipment foundations that the Company requires for the Extension. For conversion of any existing overhead facilities to underground, the terms of Section 6. Relocation or Replacement of Facilities apply. 3. NONRESIDENTIAL EXTENSIONS Applicant loads of a speculative nature or of questionable permanency either in duration or size of
load that exceed the Company’s engineering loading limits for one circuit at the local primary distribution voltage shall take delivery at the locally available transmission voltage (at or above 46,000 volts). (a) Extension Allowances – Delivery at 46,000 Volts and above
The Company will grant Customers taking service at 46,000 volts or greater an extension allowance of the meter, current transformers and potential transformers necessary to measure the Customer’s usage. Other than the extension allowance, the Customer is subject
to the same Extension provisions as a Customer who takes service at less than 46,000 volts. (b) Extension Allowances – Delivery at less than 46,000 Volts (1) Less than 1,000 kVA
The Company will grant Nonresidential Applicants requiring less than 1,000 kVA an Extension Allowance equal to nine (9) times the estimated average monthly revenue the Applicant will pay the Company. The Applicant must advance the costs
exceeding the Extension Allowance prior to the start of construction. The Company may require the Customer to pay a Contract Minimum Billing for five (5) years. Remote Service customers must pay a Contract Minimum Billing for as long as service is taken, but in no case less than five (5) years, nor more than 30 years. (2) 1,000 kVA or Greater, but less than 25,000 kVA
The Company will grant Nonresidential Applicants requiring 1,000 kVAW or greater, but less than 25,000 kVA, an Extension Allowance equal to nine (9) times the estimated average monthly revenue the Applicant will pay the Company. The Applicant must advance the costs exceeding the Extension Allowance. Fifty percent of the advance is due when the contract is executed with the remaining balance due upon completion of the Extension.

Sixth Revision of Sheet No. 12R.8 I.P.U.C. No. 1 Canceling Fifth Revision of Sheet No. 12R.8
Submitted Under Case No. PAC-E-23-21
ISSUED: January 4, 2024 EFFECTIVE: January 1, 2024
(2) 1,000 kVA or Greater, but less than 25,000 kVA (continued) The Customer must pay a Contract Minimum Billing for as long as service is taken,
but in no case less than five (5) years, nor more than thirty years. If service is terminated within the first 10 years, the Customer must pay a termination charge equal to the Extension Allowance less 1/10th of the allowance for each year service was taken. (3) 25,000 kVA and Greater Customers requiring 25,000 kVA or greater will be required to take service delivery at 46,000 volts or greater and will be subject to the same Extension provisions as all Customers requiring 46,000 volts or greater. (4) Additional Capacity The Extension Allowance for Customers where it is necessary for the Company to
increase the capacity of their facilities to serve the Customer’s additional load is calculated on the increase in revenue as a result of the load increase. The Extension Allowance for Additional Capacity is subject to the same provisions of new line
extensions, according to Customer service voltage, total load size, and permanency. (c) Additional Customers, Advances and Refunds
For facilities that a Customer pays for a portion of a Line Extension upgrade, based on the ratio of their new load to the available capacity and the Company pays for the remainder, there are no refunds. However during the first five (5) years following construction of the Line
Extension upgrade, each of the next four 1,000 kVA or greater Applicants utilizing these facilities must pay the Company, prior to connection, their proportionate share of the upgrade costs.
Otherwise a Customer that pays for a portion of the construction of an Extension, acquires right-of-way, and/or provides labor and material on an underground Extension, may receive refunds if additional Customers connect to the Extension. The Customer is eligible for refunds during the first five (5) years following construction of an Extension for up to four (4) additional Applicants as given in section 1(k) Refunds. Each of these four (4) Applicants utilizing any segment of the initial Extension, for which a refund was not waived, must pay the Company, prior to connection, a proportionate share of the refund base amount of the
shared facilities. The Company will refund such payments to the preceding Customer(s). Proportionate Share = (A + B) x C Where:
A = [Shared footage of line] x [Average cost per foot of the line]
B = Cost of the other shared distribution equipment, if applicable
C = [New additional connected load]/[Total connected load]
The Facilities Charges of refunds are re-allocated to the Applicant paying the refund. (continued)
IDAHO PUBLIC UTILITIES COMMISSIONApproved EffectiveJan. 18, 2024 Jan. 1, 2024 Per ON 36061 and 36039 Monica Barrios-Sanchez Secretary

SixthFifth Revision of Sheet No. 12R.8 I.P.U.C. No. 1 Canceling FifthFourth Revision of Sheet No. 12R.8
Submitted Under Advice No.Case No. PAC-E-23-21TAE-23-01 PAC-E-20-01
ISSUED: October 12October 3, 20230 January 4, 2024 EFFECTIVE: December 15January 1, 20243
(2) 1,000 kVA or Greater, but less than 25,000 kVA (continued) The Customer must pay a Contract Minimum Billing for as long as service is taken,
but in no case less than five (5) years, nor more than thirty years. If service is terminated within the first 10 years, the Customer must pay a termination charge equal to the Extension Allowance less 1/10th of the allowance for each year service was taken. (3) 25,000 kVA and Greater Customers requiring 25,000 kVA or greater will be required to take service delivery at 46,000 volts or greater and will be subject to the same Extension provisions as all Customers requiring 46,000 volts or greater. (43) Additional Capacity The Extension Allowance for Customers where it is necessary for the Company to
increase the capacity of their facilities to serve the Customer’s additional load is calculated on the increase in revenue as a result of the load increase. The Extension Allowance for Additional Capacity is subject to the same provisions of new line
extensions, according to Customer service voltage, total load size, and permanency. (c) Additional Customers, Advances and Refunds For facilities that a Customer pays for a portion of a Line Extension upgrade, based on the ratio of their new load to the available capacity and the Company pays for the remainder, there
are no refunds. However during the first five (5) years following construction of the Line Extension upgrade, each of the next four 1,000 kVA or greater Applicants utilizing these facilities must pay the Company, prior to connection, their proportionate share of the upgrade
costs. Otherwise a Customer that pays for a portion of the construction of an Extension, acquires right-of-way, and/or provides labor and material on an underground Extension, may receive refunds if additional Customers connect to the Extension. The Customer is eligible for refunds during the first five (5) years following construction of an Extension for up to four (4) additional Applicants as given in section 1(k) Refunds. Each of these four (4) Applicants utilizing any segment of the initial Extension, for which a refund was not waived, must pay
the Company, prior to connection, a proportionate share of the refund base amount of the shared facilities. The Company will refund such payments to the preceding Customer(s). Proportionate Share = (A + B) x C
Where: A = [Shared footage of line] x [Average cost per foot of the line]
B = Cost of the other shared distribution equipment, if applicable
C = [New additional connected load]/[Total connected load]
The Facilities Charges of refunds are re-allocated to the Applicant paying the refund.

SixthFifth Revision of Sheet No. 12R.8 I.P.U.C. No. 1 Canceling FifthFourth Revision of Sheet No. 12R.8
Submitted Under Advice No.Case No. PAC-E-23-21TAE-23-01 PAC-E-20-01
ISSUED: October 12October 3, 20230 January 4, 2024 EFFECTIVE: December 15January 1, 20243
(d) Reduction in Contract Capacity or Demand
The Company is not obligated to reserve capacity in Company substations or on Company lines, or maintain service facilities in place in excess of the maximum recorded and billed Customer demand in the most recent 36 months, unless contract provisions providing for greater demand are less than 36 months old. (continued)
Fourth Revision of Sheet No. 12R.9 I.P.U.C. No. 1 Canceling Third Revision to Sheet No. 12R.9
Submitted Under Case No. PAC-E-23-21
ISSUED: January 4, 2024 EFFECTIVE: January 1, 2024
3. NONRESIDENTIAL EXTENSIONS (continued) (d) Reduction in Contract Capacity or Demand The Company is not obligated to reserve capacity in Company substations or on Company
lines, or maintain service facilities in place in excess of the maximum recorded and billed Customer demand in the most recent 36 months, unless contract provisions providing for greater demand are less than 36 months old.
(e) Underground Extensions The Company will construct underground Extensions when requested by the Applicant or if required by local ordinance or conditions. For underground, in addition to the preceding
sections, the Applicant must provide, at their expense, all trenching and backfilling, imported backfill material, conduits, and equipment foundations that the Company requires for the Extension. When the Extension is to property that is not part of an improved development, the Company may require the Applicant to pay for facilities on the Applicant’s property to provide for additional service reliability or for future development. For conversion of any existing overhead facilities to underground, the terms of Section 6. Relocation or Replacement of Facilities apply. (f) Other Requirements When the Extension is to property that is not part of an improved development, the Company may require the Applicant to pay for the line Extension within or along side Applicant’s property as part of installing a loop feed or to provide for future development. (g) Street Lighting The Extension Allowance to street lights taking service under Rate Schedule 11 or 12 is equal to five times the annual revenue from the lights to be added. The Applicant must
provide a non-refundable advance for costs exceeding the Extension Allowance prior to the lights being added. Facilities charges and Contract Minimum Billings do not apply to street lighting.
4. EXTENSIONS TO NON-RESIDENTIAL AND RESIDENTIAL PLANNED DEVELOPMENTS (a) General
Planned developments, including subdivisions, commercial parks and industrial parks, are areas where groups of dwellings or buildings are planned to be constructed at or about the same time.
(1) Improved Planned Developments The Company will install facilities in planned developments, for which a recorded
plat has been provided, before there are actual Applicants for service under the terms of a written contract. The Company shall not be required to make Extensions to areas where there is not reasonable assurance of actual Applicants for service
within five (5) years. (continued)
IDAHO PUBLIC UTILITIES COMMISSIONApproved EffectiveJan. 18, 2024 Jan. 1, 2024 Per ON 36061 and 36039 Monica Barrios-Sanchez Secretary

Fourth Third Revision of Sheet No. 12R.9
I.P.U.C. No. 1 Canceling ThirdSecond Revision to Sheet No. 12R.9
Submitted Under Case No. PAC-E-19-19E-23-21

ISSUED: November 22, 2019January 4, 2024 EFFECTIVE: February 21, 2020January 1, 2024
3. NONRESIDENTIAL EXTENSIONS (continued)
(d) Reduction in Contract Capacity or Demand
The Company is not obligated to reserve capacity in Company substations or on Company
lines, or maintain service facilities in place in excess of the maximum recorded and billed
Customer demand in the most recent 36 months, unless contract provisions providing for
greater demand are less than 36 months old.

(e) Underground Extensions
The Company will construct underground Extensions when requested by the Applicant or if
required by local ordinance or conditions. For underground, in addition to the preceding
sections, the Applicant must provide, at their expense, all trenching and backfilling,
imported backfill material, conduits, and equipment foundations that the Company requires
for the Extension. When the Extension is to property that is not part of an improved
development, the Company may require the Applicant to pay for facilities on the
Applicant’s property to provide for additional service reliability or for future development.

For conversion of any existing overhead facilities to underground, the terms of Section 6.
Relocation or Replacement of Facilities apply.

(f) Other Requirements
When the Extension is to property that is not part of an improved development, the
Company may require the Applicant to pay for the line Extension within or along side
Applicant’s property as part of installing a loop feed or to provide for future development.

(g) Street Lighting
The Extension Allowance to street lights taking service under Rate Schedule 11 or 12 is
equal to five times the annual revenue from the lights to be added. The Applicant must
provide a non-refundable advance for costs exceeding the Extension Allowance prior to the
lights being added. Facilities charges and Contract Minimum Billings do not apply to street
lighting.

4. EXTENSIONS TO NON-RESIDENTIAL AND RESIDENTIAL PLANNED
DEVELOPMENTS
(a) General
Planned developments, including subdivisions, commercial parks and industrial parks, are
areas where groups of dwellings or buildings are planned to be constructed at or about the
same time.

(1) Improved Planned Developments
The Company will install facilities in planned developments, for which a
recorded plat has been provided, before there are actual Applicants for
service under the terms of a written contract. The Company shall not be required to
make Extensions to areas where there is not reasonable assurance of actual
Applicants for service within five (5) years.

(continued)