Download 07. Retail Metering Working Group Update to RMS on

Retail Metering Working Group
Progress Report
04/15/09
Contents of Report
• Modified Manufacturer Standards
Compliance Form Letter
• Discussed Competitive
Metering Rule & AMS
• Reviewed Section 12
of the CMG
• Discussed the Process
for Changing IDR to AMS
• Discussed OGRR 0219
• Discussed Impact of Pre-Pay
• Review Meeting Action Items
Modified Manufacturer Standards
Compliance Form Letter
•
•
•
Removed web link in
the Form Letter
Suggested changes
were accepted
ERCOT will post the
updated document
Discussed Competitive
Metering Rule & AMS
•
PURA §39.107 Metering and Billing Services (a), (b)
•
•
Metering services provided to C & I customers that are required by
the ISO to have an IDR may be provided on a competitive basis
For residential & non-residential customers other than those
required to have an IDR by ERCOT, metering services shall continue
to be provided by the TDSP
•
§25.311. Competitive Metering Services
•
ERCOT Protocols -18.6 Installation and Use of Interval
Data Recorders
•
•
•
25.311(b)(1) Defines commercial and industrial customers
25.311(b)(5) Defines metering services
25.311(c) Defines Meter ownership
•
Per ERCOT Protocols (Sec 18.6.1(1)a and b) IDRs shall be
installed & utilized for settlement of Premises having either:
–
–
A peak Demand greater than 700 kW (or 700 kVA), or
Service provided at transmission voltage (above 60 kV)
Discussed Competitive
Metering Rule & AMS (cont.)
•
•
Determined that AMS does not impact
existing RMWG procedures & rules (meter
ownership)
Reviewed the Qualified Competitive Meter
List and decided:
• Remove meters that do not have “IDR” listed as
part of the required functionality
• ERCOT will update and repost the Qualified
Competitive Meter List
Reviewed Section 12
of the CMG
•
Discussed updating the
Competitive Metering
Guides (CMG) to provide
clarification of Standards
for Competitive Metering
per input from Meter
Manufacturer
•
A CMGRR was created and has been
submitted to ERCOT Market Rules
Discussed the Possibility of
Changing IDR to AMS
• Discussed the possibility & impacts of removing IDRs
& replacing them with Advanced Meters
• Three broad possibilities
• Change IDR to AMS – Treat as IDR
• Change IDR to AMS – Treat as AMS
• Change IDR to AMS – Treat as IDR but utilize AMS
• REPs, ERCOT & TDSPs need to check internally
• Any system changes?
• What type of impact on the profile type?
• REPs & TDSPs need to check internally
• TDSP rate and tariff issues?
• Benefits to REPS, TDSPs and the customer?
• Is the change a REP, TDSP or customer choice?
Discussed the Possibility of
Changing IDR to AMS (cont.)
•
If yes,
• The ERCOT Protocols need to be revised to
allow an IDR to be removed and replaced with
an Advanced meter (AMS)
• The REP should coordinate communications for
all customers before any changes from IDR
meters to AMS meters occur
• Changing an IDR to an AMS is limited to
premises that are not required to have an IDR
by ERCOT Protocols
Discussed the Possibility of
Changing IDR to AMS (cont.)
To do:
• We have noted tasks
for various market
participants to get
feedback on and will
continue this discussion
going until we make a
decision on how to proceed
Discussed OGRR 0219
• Would stopping time error
correction have an impact?
• Will it impact the TDSP & require
more effort to keep meter time
for IDR within protocols limits?
• Will it impact meters with time of
• use programs?
• Could meters be programmed to keep time
based on the internal crystal instead of
synchronizing with the line frequency?
• The crystal oscillator may have significant time drift
issues. TDSPs to check & provide information/feedback
by April 6th
Discussed Impact of Pre-Pay
• How do Pre-Pay services/devices
affect or impact existing procedures
& rules established by RMWG?
• Are modifications needed
to include procedures &
standards for pre-pay devices?
• Per Chapter 25. Subchapter R. CUSTOMER
PROTECTION RULES FOR RETAIL ELECTRIC
SERVICE:
• §25.498(b) Defines prepayment systems as a device or
technology owned by a REP
• §25.498(c)(2) Prepayment devices are installed on
customer side of TDU meter
Discussed Impact of Pre-Pay
• The Retail Metering
Working Group (RMWG)
determined that since
devices are on customer
side of the meter there
would be no impact from
Pre-Pay services/devices
to the existing procedures
& rules
Action Items
• TDSPs, REPs & ERCOT to discuss
impacts of changing appropriate IDRs
with AMS meters given the different
above mentioned possibilities as
detailed in the document capturing this discussion
• ERCOT to update Competitive Meter List
• ERCOT Market Rules to review & return CMGRR to
RMWG Chair for submission
• TDSPs and REPs to provide impacts on ERCOT not
providing time error correction for NERC study
• TDSPs to determine if there is an alternative to
utilizing line frequency for time by April 6th
Questions?????