20240515Final Approved Tariffs.pdf

Tenth Revision Sheet 51 B IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
I P U.0 No.28 Ninth Revision Sheet 51 B May 15, 2024 51 BMay 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 - continued
When two or more Customers apply concurrently for service
from the same Line Extension, each will receive an Allowance
up to their proportion of the Basic and Exceptional Cost of the
line extension.
Allowances shall be granted only against the Basic and
Exceptional Cost of the current project and not against any
part of an earlier or future extension.
The Allowance will be equal to the Basic and Exceptional Cost
or the applicable amount listed below, whichever is less.
MAXIMUM ALLOWANCE
Schedule 1 individual Customer $2.475 per unit
Schedule 1 duplex $1 980 per unit
Schedule 1 multiplex $1 ,490 per unit
EXCEPTION: The Company will not grant an immediate
Allowance if the Company, in its sole judgement, determines
that the load:
a) is less than 2500 kWh per year, or
b) will be in service less than five years.
A mobile home will not qualify for an Allowance until it has
permanent connections to both water service and either a
sewer or septic system. If such connections are made within
five years after the completion of the line extension, the
Company will, at that time, refund the Basic and Exceptional
Cost or the amount of the Allowance in effect at the time of the
line construction, whichever is less. The Customer must apply
for the refund before the line extension becomes six years old.
Issued March 29, 2024 Effective May 15, 2024
Issued t)y Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

Twenty-Sixth Revision Sheet 51 E IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
I.P.U.C. No.28 Twenty-Fifth Revision Sheet 51 E May 15, 2024 51 EMay 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 - continued
5) "Share of Previous Extension" applies only to Primary Circuits
less than five years old. If part of a previous line extension is
used to serve a new Customer, the new Customer must pay a
share of the previous Primary Circuit cost and Transformer
cost, if shared, to the Company before the start of
construction. The amount paid by the new Customer will be
refunded to existing Customers in relation to their share of the
Primary Circuit and Transformer. if shared. The Company will
refund appropriate shares to the bearers of Extension
Certificates when the Certificates are presented for payment
and the connection of the subsequent Customer has been
verified. The Company will make a reasonable attempt to
inform the bearer of the Certificate when a refund is due.
Bearers of Extension Certificates must apply for refunds
before the original line extension becomes six years old.
Unclaimed refunds will be returned to the contributor.
EXAMPLE:
1. First Customer pays $13,480 for 1,000 feet of
primary underground circuit ($13.48 per foot).
2. Second Customer takes service within five years
using 600 feet of the original extension.
3. Both Customers share the first 600 feet equally:
600 ft x $13.48/ft x '/z = $4,044.
4. The Second Customer's payment of $4.044, will be
refunded to the First Customer to reduce his
investment in the 600 feet to $4,044. The First
Customer's investment in the remaining 400 feet
remains at $5,392. ($13,480-$4,044-$4,044=$5,392)
EXCEPTION: If the refund to an existing Customer is
less than $100 each, the new Customer will not be
required to pay that share and the existing Customer
will not receive a refund.
Issued March 29, 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar. Director of Regulatory Affairs

Twenty-Fifth Revision Sheet 51 F IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
I.P.U.C. No.28 Twenty-Fourth Revision Sheet 51F May 15, 2024 51 FMay 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 - continued
4. RULES AND CHARGES FOR UNDEVELOPED RESIDENTIAL LOTS
a. A development is a group of neighboring undeveloped lots separated
by no more than streets and under the ownership or legal control of a
single party as determined by the Company. Both the General Rules
and the following rules apply to line extensions within
residential developments.
b. Before Company facilities will be installed, the developer must submit
a written application for service, a copy of the plat as approved by the
governing agency depicting dedicated utility easements approved by
the serving utilities and must pay an extension cost to the Company
which is computed as follows.
Basic and Exceptional Cost
+ Customer-Requested Costs
- Cost Reductions
(one) Design Fee of $150 (if paid)
extension cost within development
+ cost of extension to development
+ Share of Previous Extension
extension cost
1) "Basic and Exceptional Cost" will be computed from the
following rate per lot when the Development serves single
phase loads, has at least six lots and the average frontage is
no more than 175 feet per lot. The Basic and Exceptional Cost
includes the cost of the Primary Circuit, the Transformer and
the Secondary Circuit in the utility easement or public right-of-
way, but does not include the Service Circuit from the point of
connection with the Secondary Circuit to the Point of Delivery.
Developments: $2,833 per Lot
Issued March 29, 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar. Director of Regulatory Affairs

Twenty-Sixth Revision Sheet 51G IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
IPUC No 28 Twenty-Fifth Revision Sheet 51 G May 15, 2024 51 GMay 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 - continued
The Basic and Exceptional Cost for all other Developments will
be computed from the rates listed in this Schedule for Service
Circuits, Secondary Circuits, Transformers and Primary Circuits.
2) "Cost Reductions, "Customer-Requested Costs. and "Share of
Previous Extension" are described under Rules for Individual
Customers.
3) "Extension to development" is the line extension between the
Company's existing energized electric facilities and the
boundary of the development. The Rules for Individual
Customers apply to the extension to the development.
C. In lieu of a cash payment of the Basic and Exceptional Cost in a
Development, the Company will accept a letter of credit, a contractor's
performance bond, or another credit instrument agreeable to the
Company for $2,833 per lot upon execution of a written agreement with
the Developer. The agreement shall prescribe the requirements for
such a credit instrument and shall permit the face amount of the
instrument to be reduced annually as new customers are connected
within the Development. The Developer will provide ditching within the
Development.
d. Prior to the installation of the Service Circuit to each single-family
residence in a development, the home builder will be required to make a
non-refundable cash payment to the Company of $883 per residence.
There will be no charge to the builder for the installation of the Service
Circuit to serve a duplex or multiplex dwelling.
e. A Developer who pays the extension cost described in 4.b.1) may apply
for a refund annually for each permanent Customer connected within the
Development during the first five years from the start of construction after
the extension is completed. The Company will make a reasonable
attempt to inform the bearer of the certificate when a refund is due. The
Company will pay the refund to the bearer of the Extension Certificate
when it is presented to the Company for payment and the connection of
the permanent Customer has been verified_
Issued March 29, 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

Twenty-Fourth Revision Sheet 51 H IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
I.P.U.C, No.28 Twenty-Third Revision Sheet 51H May 15, 2024 51HMay 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 - continued
For Developers who have made a cash payment to the Company for the
Basic and Exceptional Cost in the development, the sum of all refunds
shall not exceed the total Basic and Exceptional Cost paid by the
Developer or $2,833 per lot multiplied by the number lots, whichever is
less. The developer must apply for the refunds before the line extension
becomes six years old.
f. In a Development where primary taps may be required into some lots to
provide adequate service or where the loads are not clearly defined, the
Company may elect to install only an initial Primary Circuit through the
Development (no Transformers or Secondary Circuits). The Rules for
Individual Customers will be used to establish the extension cost of
the Primary Circuit and that cost must be paid in advance by the
Developer_
The permanent Customer on each lot must meet the Rules for
Individual Residential Customers for the extension into the lot, except
they will not pay a share of the cost of the Primary Circuit through the
Development or a share of previous extensions outside the
Development. The applicable Allowance will be credited first to the
Basic and Exceptional Cost to serve the permanent Customer. The
Developer will be refunded only the portion of the Allowance not
granted or applied to the permanent Customer.
Issued March 29. 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar. Director of Regulatory Affairs
G .

Eleventh Revision Sheet 51J IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
LP U.C. No.28 Tenth Revision Sheet 51 J May 15, 2024 51 JMay 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 — continued
1) The Total Estimated Extension Cost shall include all costs which
are necessary to provide service to the Customer, as determined
by the Company. The amount of the Allowance will be determined
individually for each Customer based on the Company's estimate
of the Customer's annual metered energy usage (delivered by
Avista) and an allowance per kWh based on the applicable service
schedule.
d. When two or more Customers apply concurrently for service from the
same Line Extension, each will receive an Allowance up to their
proportion of the Total Estimated Extension Cost. Allowances shall be
granted only against the costs of the current project and not against any
part of an earlier or future extension.
The Allowance will be the Total Estimated Extension Cost, or the applicable
Allowance by Schedule multiplied by the Customer's estimated metered
energy usage (delivered by Avista), whichever is less:
ALLOWANCE BY SERVICE SCHEDULE
Schedule 11 or 12: $0.19321 per kWh
Schedule 21 or 22: $0.17749 per kWh
Schedule 31 or 32: $0.31838 per kWh
Exception: The Company will not grant an immediate Allowance if the
Company, in its sole judgement, determines that the load is unknown, or
will be in service less than five years. If an Allowance is not provided at
the time service is installed. the Customer is eligible to receive a refund
of their Allowance when annual metered energy usage (delivered by
Avista) is known and measured. Any refund of Customer Allowance must
be requested by the Customer within five years of the service installation
Undeveloped Commercial and Industrial Lots: A development is a group of
neighboring undeveloped lots separated by no more than streets and
under the ownership or legal control of a single party as determined by the
Company The General Rules, the Rules for Commercial and Industrial
Customers and the following apply to line extensions within commercial or
industrial developments. Before Company facilities will be installed, the
developer must submit a written application for service and a copy of the
plat as approved by the governing agency depicting dedicated utility
easements approved by the serving utilities
Issued March 29, 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

Twenty-Fifth Revision Sheet 51 N IDAHO PUBLIC UTILITIES COMMISSION
Canceling Approved Effective
►.P.U.C. No.28 Twenty-Fourth Revision Sheet 51N May 15, 2024 51 Way 15, 2024
AVISTA CORPORATION Per ON 36182
dba Avista Utilities Monica Barrios-Sanchez Secretary
SCHEDULE 51 - continued
Single-Phase
Overhead Primary Circuit:
Fixed Costs: $5,379 per Customer
Variable Costs: $10.69 per foot
Underground Primary Circuit:
Fixed Costs: $2,516 per Customer
Variable Costs: $13.48 per foot
g. "Secondary Circuit" is the electrical facility from the Company's
Transformer to a handhole or connectors from which one or more
Service Circuits originate. The Secondary Circuit is single phase, is
operated at less than 600 volts to ground and may include conductors,
connectors, conduit, handholes, and ditch. The Basic and Exceptional
Cost of the Secondary Circuit shall be computed using the following
rates.
Single Phase Underground Secondary Circuit:
Fixed Costs: $666 per customer
Variable Costs: $14.17 per foot
Single Phase Overhead Secondary Circuit:
Fixed Costs: $2,212 per customer
Issued March 29. 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs

DAHO PUBLIC UTILITIES COMMISSION
Twenty-Sixth Revision Sheet 510 Approved Effective
Canceling May 15, 2024 May 15, 2024
I.P.U.C. No.28 Twenty-Fifth Revision Sheet 510 Per ON 3615�P
AVISTA CORPORATION Monica Barrios-Sanchez Secretary
dba Avista Utilities
SCHEDULE 51 - continued
h. "Service Circuit" is the electrical facility between the Company's
Transformer, connectors, or handhole and the Point of Delivery for a
single Customer or building. The Service Circuit is single phase*, is
operated at less than 600 volts to ground and may include
conductors, connectors, conduit, and ditch. The Basic and
Exceptional Cost of the Service Circuit shall be computed using the
following rates. These rates do not include meters and metering
facilities which are used by the Company for billing purposes.
Single Phase Overhead Service Circuit:
Variable Costs: $5.02 per foot
Single Phase Underground Service Circuit:
Variable Costs: $10.46 per foot
i. "Transformer" Basic and Exceptional Cost shall be computed using
the following rates for single phase transformers.
Single Phase Overhead Transformer Costs: $5,025 per Customer
Single Phase Padmount Transformer Costs: $8,413 per Customer
j. "Underground Facilities" may include primary cable, secondary and
service cable, secondary and service connections, surface-type (pad-
mount) Transformers, pads, enclosures, terminations, and conduit
where necessary. These facilities will be owned, operated and
maintained by the Company unless otherwise provided for by
agreement.
Issued April 24, 2024 Effective May 15, 2024
Issued by Avista Utilities
By Patrick Ehrbar, Director of Regulatory Affairs
p .