CSWG Update Blake Holt ERCOT CSWG 10/20/2014

Thanksgiving Settlement Schedule 12/01/2014 (M) 12/02/2014 (T) 12/03/2014 (W) 12/04/2014 (Th) 12/05/2014 (F) Statements DAM 11/25DAM 11/26 – 11/30DAM 12/1DAM 12/2DAM 12/3 Initial 11/22 – 11/24Initial 11/25Initial 11/ /28Initial 11/29Initial 11/30 Final 10/3 – 10/7Final 10/8Final 10/9Final 10/10Final 10/11 True-Up 5/31 – 6/4True-Up 6/5True-Up 6/6True-Up 6/7True-Up 6/8  Monday’s Statements have 3 Initials, 5 Finals, and 5 True-Ups  Tuesday’s Statements have 5 DAMs  Wednesday’s Statements have 3 Initials

3 New logic and invoices used in January 2015 when closing out December 2014 New Bill Determinants: CRRBAFA- CRR Balancing Account Fund Available (current month) CRRBAF- CRR Balancing Account Fund Balance (current / previous month) FUNDCAP- CRR Balancing Account Fund Cap ($10 million) NPRR 580 Implementation Details Current Methodology After refunds for CRR shortfalls, distribute any excess funds to load (“close out” the balancing account for the month). CRRs remain short-paid if not enough funds to cover the shortfall. Rolling Balancing Account Fund On a monthly basis, after refunds for CRR shortfalls, deposit any excess into a capped “Rolling Balancing Account Fund” to be used to cover shortfalls in future months. Distribute to load when the funds exceeds the cap ($10 million). Effective JAN 2015

4 Current CRR Balancing Account Invoice NPRR 580 and NPRR467 – Balancing Account Invoice

5 New CRR Balancing Account Invoice (Initial)

6 New CRR Balancing Account Invoice (contains a Resettlement) NPRR 580 and NPRR467 – Balancing Account Invoice

7 New XSD and XSL will be provided due to the change NPRR 580 and NPRR467 – Balancing Account Invoice