20230629Attachment No 2 - Press Release and Bill Insert.pdf

Attachment No. 2
Press Release

For information, contact: News Media Hotline [phone]

Rocky Mountain Power Files On-Site Generation Study

BOISE, Idaho (June 29, 2023) — The Idaho Public Utilities Commission (IPUC) has asked Rocky
Mountain Power to conduct an on-site generation study, as part of Case No. PAC-E-19-08.
Rocky Mountain Power has filed the study to evaluate methods, inputs, and assumptions for
valuing generation that is generated by the customer and exported to the grid. The purpose of
this study is not to propose a specific export credit rate at this time but to initiate a review and
obtain feedback on potential considerations for valuing an export credit rate.

The study provides information that the IPUC, Rocky Mountain Power and other stakeholders
will use to determine whether changes should be made to Rocky Mountain Power’s existing
rate schedules for customers who choose to generate some of their own energy. Rocky
Mountain Power, in its application which opens Case No. PAC-E-23-17, is requesting the
commission acknowledge the study as fulfilling the obligations of Order No. 34753

The study scope which was defined in commission Order No. 34753 includes several elements.
Some highlights of the study:

• The study gives a snapshot of Rocky Mountain Power’s approximately 2,200 on-site
customer generation customers in Idaho.
• The different components of the Export Credit Rate, which is how customers are
compensated (in the form of a bill credit) for excess energy they send back to Rocky
Mountain Power’s grid, are evaluated. The components include, but are not limited
to, the avoided energy value, avoided capacity value, and avoided transmission and
distribution costs.
• The effects of netting imports to the grid for different time periods; monthly, hourly,
and instantaneously are analyzed to show the company impact for each scenario.
• Additional factors were also considered such as expiration time periods for bill
credits and the frequency of updates to the Export Credit Rate.

Rocky Mountain Power has submitted its application to the Idaho commission with the goal of
keeping customers and the public well informed of any potential changes to customer
generation policies. Next, the commission will set a schedule to process the case. Interested
stakeholders will have an opportunity to submit public comments on the study. Rocky
Mountain Power has proposed a schedule that will allow for the company to provide a
workshop on the proposed study and for the commission staff to hold a public workshop.

The Idaho commission will be accepting feedback from customers on the study. To view the
study and supporting data, visit rockymountainpower.net/idahostudy or puc.idaho.gov Case
No. PAC-E-23-17. To provide feedback to the commission regarding the study, customers can
file written comments with the Idaho Commission at puc.idaho.gov/Form/CaseComment
(reference Case No. PAC-E-23-17) or customers can mail written comments to PO Box 83720,
Boise ID, 83720. Also, customers can subscribe to the IPUC’s RSS feed to receive periodic
updates via email about the case.

After the study review phase is complete, the company expects to request any changes to its
net billing program after the end of the year in a separate implementation case which would
also provide an opportunity for customers, the public, and other stakeholders to comment on
any changes to the Export Credit Rate.

In 2020, the Idaho commission granted legacy (grandfathered) status to eligible meters. The
commission has determined that the grandfathered status runs with the meter site, not the
customer. If a system is offline for more than six months, or is moved to another site, the
grandfathered status of the system is forfeited. The customer may increase the capacity of the
grandfathered system by no more than 10% of the originally installed nameplate capacity, or 1
kilowatt, whichever is greater. The term of the grandfathering period is 25 years. Customers
who do not have legacy systems are subject to changes to the on-site generation compensation
structure, including the value of the Export Credit Rate. Customers are notified when applying
for interconnection that the value of excess energy is subject to change. While not at issue in
this case, all on-site generation customers, regardless of legacy status, are subject to changes in
rates (energy prices), billing components and billing structure.

About Rocky Mountain Power
Rocky Mountain Power provides safe and reliable electric service to more than 1.2 million
customers in Utah, Wyoming and Idaho. The company supplies customers with electricity from
a diverse portfolio of generating plants including hydroelectric, thermal, wind, geothermal and
solar resources. Rocky Mountain Power is part of PacifiCorp, one of the lowest-cost electricity
providers in the United States, with two million customers in six western states. For more
information, visit: www.rockymountainpower.net

Attachment No. 3
Bill Insert
Rocky Mountain Power Files Customer Self-Generation Study
Para más información en cómo este cambio impactará su factura, llame al 888-225-2611.
©2023 Rocky Mountain Power
On June 29, 2023, Rocky Mountain Power asked the Idaho Public Utilities Commission to acknowledge its on-site generation study.
Rocky Mountain Power has filed the study to evaluate methods, inputs, and assumptions for valuing customer self- generation that is
exported to the grid. The purpose of this study is not to propose a specific export credit rate at this time but to initiate a review and
obtain feedback on potential considerations for valuing an export credit rate. As part of its application, Rocky Mountain Power has
asked the commission to set a schedule which allows for intervenor and public comment on the study.
The commission asked Rocky Mountain Power to conduct the on-site generation study, as part of Case No. PAC-E-19-08. The
study provides information that the commission, Rocky Mountain Power and other stakeholders will use to determine whether
changes should be made to Rocky Mountain Power’s existing rate schedules for customers who choose to generate some of
their own energy. Rocky Mountain Power, in its application which opens Case No. PAC-E-23-17, is requesting the commission
acknowledge the study as fulfilling the obligations of Order No. 34753.
The highlights of the study were defined in commission Order No. 34753 and include the following elements:
• The study gives a snapshot of Rocky Mountain Power’s approximately 2,200 on-site customer generation
customers in Idaho.
• The different components of the Export Credit Rate, which is how customers are compensated
(in the form of a bill credit) for excess energy they send back to Rocky Mountain Power’s grid, are evaluated.
The components include, but are not limited to, the avoided energy value, avoided capacity value, and avoided
transmission and distribution costs.
• The effects of netting imports to the grid for different time periods - monthly, hourly, and instantaneously -
are analyzed to show the company impact for each scenario.
• Additional factors were also considered, such as expiration time periods for bill credits and the frequency of
updates to the Export Credit Rate.
Rocky Mountain Power has submitted its application to the Idaho commission with the goal of keeping customers and the public
well informed of any potential changes to customer generation policies. Next, the commission will set a schedule to process
the case. Interested stakeholders will have an opportunity to submit public comments on the study. Rocky Mountain Power has
proposed a schedule that will allow for the company to provide a workshop on the proposed study, and for commission staff to
hold a public workshop.
The Idaho commission will be accepting feedback from customers on the study. To view the study and supporting data, visit
RockyMountainPower.net/IdahoStudy or puc.idaho.gov Case No. PAC-E-23-17. To provide feedback to the commission
regarding the study, customers can file written comments with the Idaho Commission at puc.idaho.gov/Form/CaseComment
(reference Case No. PAC-E-23-17) or customers can mail written comments to PO Box 83720, Boise ID, 83720.
Customers can also subscribe to the commission’s RSS feed to receive periodic updates via email about the case. Copies of the
proposal are also available for review at the company’s offices in Rexburg, Preston, Shelley and Montpelier, although the company
encourages customers to visit its website at RockyMountainPower.net/IdahoStudy.
Idaho Public Utilities Commission
www.puc.idaho.gov
11331 W. Chinden Blvd. Building 8,
Suite 201-A
Boise, ID 83714
Rocky Mountain Power offices
Rexburg – 127 East Main
Preston – 509 S. 2nd East
Shelley – 852 E. 1400 North
Montpelier – 24852 U.S. Hwy 89