Nodal Program Update and SEWG Update COPS 3/12/2011

1. Nodal Program Update and SEWG Update COPS 3/12/2011 Jim Galvin

2. Settlement Observations- Load Zone to Hub January Meeting Title (optional)

3. Load Zone Market Prices Feb 2011

4. Settlement Observations- Cost to Serve Load January • Cost to Serve Load March 2011- • AS $1.82 down from February which was $4.24 (primarily driven by Non-spin during winter weather events • BPD Uplift charges are a credit to Loads at $0.02 per MWh down from $0.08 from February, total BPD charges to resources for March is approximately $340K • RUC Uplift Charges remain negligible as most charges are assigned to entities short at RUC periods • Total RUC Charges to short entities $$690 K (down from $5.5 M in December) • Revenue Neutrality uplift to Loads currently a expense of $0.05/MWh (appears to be normalizing)

5. Settlement Observations Q1 2011 • Despite Winter Weather events in February, the RTSPP comparison to MCPE from Q1 2011 to Q1 2010 shows a decrease in average 24x7 price from $40.68 (2010 MCPE NZ) to $39.40 (2010 RTSPP NZ) • Winter weather in 2010 was sustained for longer periods • 2011 Winter events shorter in nature followed by milder than normal conditions • AS costs higher in 2011 due to higher clearing prices for all AS services, primarily driven by Non-spin and more Non-spin procured • Absence of uplifted Congestion costs from 2010 (approximately $0.46 /Mwh • Revenue Neutrality spikes in 2011 research still ongoing • Potential resettlements of December and January months due to “De-energized Bus” issue

6. SEWG Summary- Nodal Settlement Guide • SEWG Leadership has secured volunteers to assist in adding detail to the Nodal Settlement Guide • Harika Basaran (Vice Chair), Lori Williams (BTU), Alana Lewis (NRG) and Heather Boisseau (LCRA) • Approach will be a “divide and conquer” and collaboration on individual efforts as we prepare the document for draft submittal to COPS • The team presented examples to the SEWG group at our last meeting, examples are posted on our meeting page from March • SEWG members were encouraged by the level of detail and content in examples that were incorporated • Sub-group will continue to divide and conquer all charge types with the intent of bringing a draft to COPS this summer Meeting Title (optional)

7. Extract Issues Update • Events continue to occur for reports and extracts as the system stabilizes but no significant delays • ERCOT remains focused on stabilization of the systems • Jackie Ashbaugh presented updated statistics of the timeliness of extract and report postings from previous COPs meeting • ERCOT continues to meet protocol objectives for a super-majority of reports and extracts postings • ERCOT continues to post and monitor events as were done in Nodal and report to SEWG regularly at the link below: http://www.ercot.com/services/sla/

8. In Process Items • NPRR 347- Single Daily Invoice and Counter Party Invoice, as submitted by ERCOT to assist in simplifying the settlement process by reducing statements and aggregating to a single invoice • SEWG and MCWG endorse the concept, NPRR just posted and will be reviewed at next meeting • Revenue Neutrality- As RTRN stabilizes and more is presented on the “De-energized Bus” issue, SEWG will continue to monitor RTRN • SEWG began discussions on Market Default process and will continue to discuss and evaluate the current process • Real Time Settlement Timeline- NPRR drafted to reduce the RT Settlement Timeline by a day was discussed further and determined that the risk of losing a day for processing and receiving data remains a concern for ramping the RT schedule in below the 10-day period

9. Questions? Meeting Title (optional)