EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.1 Page 1 of 1 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #1 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions Please identify the witnesses who will sponsor the evidence, and explain their relationship to the documents in the Appendices to the letter (e.g., author, familiar with the development of the document, no relationship) RESPONSE The IESO witnesses are: Dan Rochester, Manager – Reliability Assessments. Mr. Rochester’s relationship with the documents in the Appendices to the letter is as follows: o Appendix 1 – limited review and limited familiarity with the content o Appendices 2 and 6 – no relationship o Appendices 3 to 5 - author David Robitaille, Manager – Operational Effectiveness. Mr. Robitaille’s relationship with the documents in the Appendices to the letter is as follows: o Appendix 1, 2 and 6 – no relationship o Appendices 3 to 5 – familiar with the content EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.2 Page 1 of 1 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #2 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions Please provide the equivalent of Table 1 for “Capability at Winter Peak.” RESPONSE The Forecast Capability at 2013/2014 Winter Peak is included and provided in the last column of the table below: Total Forecast Change in Forecast Installed Capability at Number Installed Change in Capability at Fuel Type Capacity Summer of Stations Capacity Stations Winter (MW) Peak* (MW) (MW) Peak* (MW) Nuclear 12,998 12,844** 5 0 0 12,887** Hydroelectric 7,939 5,718 70 0 0 6,089 Coal 3,293 3,018 3 0 0 153*** Oil / Gas 9,987 8,925 29 0 0 9,295 Wind 1,560 213 13 49 1 520 Biomass / Landfill Gas 122 90 6 0 0 90 Total 35,899 30,808 126 49 1 29,034 * Actual Capability may be less as a result of transmission constraints ** Output of certain nuclear units may be limited due to environmental variances *** Coal capability in winter is reduced due to planned southwest coal retirements EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.3 Page 1 of 1 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #3 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions Please list the gas-fired plants that make up the “approximately 2300 MW…situated in the greater Toronto area.” (p. 3) RESPONSE The gas-fired plants that make up the “approximately 2300 MW…situated in the greater Toronto area” are: Portlands Energy Centre Goreway Power Station GTAA Cogeneration Plant TA Douglas Cogeneration Plant Whitby Cogeneration Plant York Energy Centre EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.4 Page 1 of 1 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #4 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions Please explain whether the “Toronto electricity zone” is the same as the “greater Toronto area,” as these terms are used in the letter. (p. 3) RESPONSE Yes, the “Toronto electricity zone” is the same as the “greater Toronto area”. The Toronto electricity zone is defined in electrical terms by major transmission interfaces as described in the IESO’s Ontario Transmission System document. However, it has come to our attention that there is an error in our geographic translation of these interfaces in our June 28th letter. The Toronto electricity zone is bordered approximately by the west boundary of Mississauga, north to Orangeville, and east to Bowmanville. EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.5 Page 1 of 1 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #5 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions Please provide “the Toronto electricity zone’s peak demand for the” winter of 2012/13. (p. 3) a) Please provide the time and date of the Toronto electricity zone’s peak electric load in 2012/13. RESPONSE Toronto zone’s peak demand for the winter of 2012/13 was 7,924 MW. a) Toronto electricity zone’s peak electric load occurred on Tuesday, January 22nd, 2013 at hour ending 1900 EST. This information is posted on the IESO website and can be found here - see link titled ‘2013 zonal demands’: http://www.ieso.ca/imoweb/marketdata/ZonalDemands.asp EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.6 Page 1 of 3 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #6 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions Please provide the time date and load of the ten highest-load hours in the Toronto zone, for each winter 2005/06 to 2012/13. RESPONSE The following table has the ten highest load hours in the Toronto zone, for each winter 2005/06 to 2012/13. EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.6 Page 2 of 3 Toronto Toronto Hour Hour Zone Zone Winter Date Ending Month Winter Date Ending Demand Demand (EST) (EST) (MW) (MW) 2005-06 14-Dec-05 18 7954 12 2009-10 28-Jan-10 19 7909 2005-06 14-Dec-05 19 7935 12 2009-10 04-Jan-10 18 7903 2005-06 12-Dec-05 19 7902 12 2009-10 04-Jan-10 19 7878 2005-06 12-Dec-05 18 7888 12 2009-10 12-Jan-10 19 7800 2005-06 13-Dec-05 19 7880 12 2009-10 11-Jan-10 19 7799 2005-06 15-Dec-05 18 7870 12 2009-10 11-Jan-10 18 7796 2005-06 13-Dec-05 18 7868 12 2009-10 28-Jan-10 20 7779 2005-06 15-Dec-05 19 7836 12 2009-10 05-Jan-10 19 7778 2005-06 06-Dec-05 19 7834 12 2009-10 05-Jan-10 18 7777 2005-06 07-Dec-05 19 7824 12 2009-10 10-Dec-09 18 7765 2006-07 05-Feb-07 19 8048 2 2010-11 24-Jan-11 19 7991 2006-07 07-Feb-07 19 8042 2 2010-11 24-Jan-11 18 7941 2006-07 13-Feb-07 19 8034 2 2010-11 13-Dec-10 18 7893 2006-07 06-Feb-07 19 8013 2 2010-11 14-Dec-10 18 7879 2006-07 14-Feb-07 19 7952 2 2010-11 14-Dec-10 19 7839 2006-07 13-Feb-07 20 7935 2 2010-11 13-Dec-10 19 7829 2006-07 05-Feb-07 20 7920 2 2010-11 01-Feb-11 19 7815 2006-07 07-Feb-07 20 7907 2 2010-11 08-Feb-11 19 7799 2006-07 25-Jan-07 19 7900 1 2010-11 02-Feb-11 19 7784 2006-07 06-Feb-07 20 7867 2 2010-11 24-Jan-11 20 7781 2007-08 21-Jan-08 19 7805 1 2011-12 03-Jan-12 19 7713 2007-08 05-Dec-07 18 7801 12 2011-12 03-Jan-12 18 7676 2007-08 12-Feb-08 19 7779 2 2011-12 19-Jan-12 19 7587 2007-08 11-Feb-08 19 7766 2 2011-12 03-Jan-12 20 7560 2007-08 21-Jan-08 18 7744 1 2011-12 18-Jan-12 19 7508 2007-08 05-Dec-07 19 7742 12 2011-12 30-Jan-12 19 7484 2007-08 03-Dec-07 18 7739 12 2011-12 19-Jan-12 20 7457 2007-08 11-Dec-07 18 7717 12 2011-12 19-Jan-12 18 7456 2007-08 17-Dec-07 18 7705 12 2011-12 16-Jan-12 18 7421 2007-08 06-Dec-07 18 7702 12 2011-12 30-Jan-12 18 7421 2008-09 21-Jan-09 19 7833 1 2012-13 22-Jan-13 19 7924 2008-09 21-Jan-09 18 7760 1 2012-13 23-Jan-13 19 7854 2008-09 14-Jan-09 19 7744 1 2012-13 22-Jan-13 20 7815 2008-09 14-Jan-09 18 7712 1 2012-13 24-Jan-13 19 7814 2008-09 08-Dec-08 18 7707 12 2012-13 22-Jan-13 18 7801 2008-09 15-Jan-09 19 7690 1 2012-13 23-Jan-13 18 7765 2008-09 04-Feb-09 19 7654 2 2012-13 23-Jan-13 20 7705 2008-09 21-Jan-09 20 7650 1 2012-13 24-Jan-13 20 7701 2008-09 08-Dec-08 19 7632 12 2012-13 21-Jan-13 19 7678 2008-09 15-Jan-09 18 7600 1 2012-13 04-Feb-13 19 7662 EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.6 Page 3 of 3 This information is posted on the IESO website and can be found at http://www.ieso.ca/imoweb/marketdata/ZonalDemands.asp EB-2012-0451/EB-2012-0433/EB-2013-0074 Exhibit M.IESO.GEC.7 Page 1 of 1 INDEPENDENT ELECTRICITY SYSTEM OPERATOR RESPONSE TO GREEN ENERGY COALITION INTERROGATORY #7 INTERROGATORY Issue A.1. Reference IESO Letter, June 28, 2013 Questions a) Please provide the forecast winter peak for the Toronto electricity zone for each year for which the IESO has a forecast. b) Please explain how energy-efficiency and demand response are included in those forecasts. RESPONSE a) The IESO demand forecasting is limited to an 18-month time period.