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Tariff amendments - filed in 2009
- Jan15, 2009 Tariff amendment - ensure consistency between the MRTU software and tariff (ER09-556)
- Jan 29, 2009 Tariff amendment - modification to credit policy provisions (ER09-589)
- Feb 12, 2009 Tariff amendment - division of responsibility between control centers (ER09-710)
- Mar 30, 2009 Tariff amendment - technical differences between tariff and business practive manuals (ER09-918)
  Settlements Tariff Amendment
- Apr 28, 2009 Tariff amendment - standard resource adequacy capacity product (ER09-1064)
- May 21, 2009 Tariff amendment - enable unwinding of firm transmission rights (ER09-1191)
- Jun 1, 2009 Tariff amendment - implement acceleration of payment timeline (ER09-1247)
- Jun 5, 2009 Tariff amendment - designation of reference bus in day-ahead price calculations (ER09-1281)
- Jul 31, 2009 Tariff amendment - start-up and minimum load costs, CRRs and disconnected PNodes market issues (ER09-1529)
- Aug 3, 2009 Tariff amendment - regulatory must-take generation and enforcement of transmission constraints (ER09-1542)
- Sep 4, 2009 Tariff amendment - reduce maximum unsecured credit limit (ER09-1681)
- Sep 18, 2009 Tariff amendment - generator interconnection process reform (ER09-1722 and ER08-1317)
- Sept 25, 2009 Tariff amendment - modification to payment acceleration program (ER09-1744)
- Sep 30, 2009 Tariff amendment - real-time imbalance energy neutrality offset (ER09-1781)
- Oct 2, 2009 Tariff amendment - modify rules limiting supply bid pool in integrated forward market (ER10-28)
- Oct 30, 2009 Tariff amendment - modify and extend grid management charge (ER10-188)
- Nov 25, 2009 Tariff amendment - eligible intermittent resources (ER10-319)
- Dec 23, 2009 Tariff amendment - procure incremental ancillary services from external non-dynamic system resources (ER10-479)
- Dec 24, 2009 Tariff amendment - implement scarcity reserve pricing (ER10-500)