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NEWS RELEASES

New Electricity Supply Supports Coal Phase-Out in Ontario (August 23, 2010)

Ontario Communities Power Down for Megawatt Reduction Challenge (August 16, 2010)

IESO Plans Routine Voltage Reduction Test (July 14, 2010)

IESO Selects Participants for Demonstration Project to Provide Regulation Services (June 29, 2010)

IESO Wins APEX Award for Pandemic Planning Excellence (June 10, 2010)

Positive Summertime Outlook for Ontario's Electricity System (May 20, 2010)

IESO Releases Results from Earth Hour (March 27, 2010)

Earth Hour Participation Expected to Increase in 2010 (March 24, 2010)

Olympic Hockey Powers a Change in Electricity Usage (March 1, 2010)

High Levels of Reliability for Ontario's Electricity System (February 23, 2010)

Wind Power in Ontario Generates a New Record in 2009 (January 8, 2010)

Transmission, Integration and Customer Engagement Key in the Shift to a Cleaner, More Renewable Electricity Supply Mix (December 21, 2009)

New Supply Powers Ontario's Electricity System (November 17, 2009)

New Infrastructure on the Power System Supports Reliable Operations in Ontario (August 25, 2009)

Community Challenge Results  (August 19, 2009)

Ontario's System Operator to Launch Centralized Wind Forecasting (August 18, 2009)

IESO is offering an opportunity to do interviews and shoot B-Roll in the Control Room (August 13, 2009)

New Supply Powers Positive Outlook for Electricity in Ontario (May 25, 2009)

IESO Releases Results from Earth Hour (March 28, 2009)

Media Advisory - IESO to Provide Earth Hour Results for Ontario (March 25, 2009)

Ontarians Are Turning off Their Lights and More for Earth Hour 2009 (March 19, 2009)

Electricity Outlook for Ontario Remains Positive (March 16, 2009)

Wind Generation in Ontario Sets a Record (March 12, 2009)

Creating an Electricity System to Serve the Digital Age (February 4, 2009)

IESO Plans Routine Voltage Reduction Test (January 19, 2009)

IESO 2008 Electricity Figures Show Record Levels of Hydroelectric Power (January 12, 2009)

IESO Releases Positive Electricity Outlooks (December 22, 2008)

IESO Releases Positive 18-Month Outlook (September 23, 2008)

IESO Praised for Compliance with Key Reliability Standards (September 15, 2008)

Heat, Air Conditioning and Electricity Demand (July 18, 2008)

IESO Releases Day-Ahead Price Forecast (July 2, 2008)

IESO Releases 18-Month Outlook (June 23, 2008)

Electricity Sector Leaders Commit to Ontario Smart Grid Forum (June 4, 2008)

A Vision for Ontario's Smart Grid (March 31, 2008)

IESO Releases Results from Earth Hour (March 29, 2008)

IESO Electricity Outlook Remains Positive (March 12, 2008)

IESO's Compliance with Reliability Standards Commended by North American Regulator (February 6, 2008)

IESO Releases 2007 Generation and Consumption Figures (January 10, 2008)

Reliability Outlook for Ontario Positive (December 17, 2007)

IESO Releases 18-Month Outlook (September 10, 2007)

IESO Appeals for Reduced Electricity Consumption  (August 2, 2007)

IESO to Update Summer Outlook (July 6, 2007)

Power Advisory Ends for the Greater Toronto Area (June 28, 2007)

IESO appeals for reduced electricity consumption in the GTA (June 26, 2007)

IESO Releases 18-Month Outlook  (June 22, 2007)

ISOs and RTOs Launch New Website (June 21, 2007)

Voltage Levels Restored to Normal (June 12, 2007)

IESO Report Points to Fewer Formal Investigations of Potential Breaches in Ontario's Wholesale Electricity Market (May 17, 2007)

IESO Releases 18-Month Outlook for Ontario's Electricity System  (March 9, 2007)

IESO Report Points to Improved Reliability Outlook for Ontario (March 2, 2007)

IESO Receives Excellent Review from North American Regulator (February 19, 2007)

IESO Releases 2006 Generation and Consumption Figures (January 16, 2007)

IESO Selects IBM for Ontario's Smart Meter Data Repository (January 15, 2007)

IESO Actions Will Lower Customers' Electricity Costs (December 27, 2006)

18-Month Outlook Positive for Ontario (December 21, 2006)

Ontario Leads in Endorsing North American Electricity Reliability Standards  (November 30, 2006)

IESO and The Weather Network Launch Exciting New Online Initiative (November 16, 2006)

New Study Highlights Wind Potential in Ontario (October 24, 2006)

IESO Seeks Reduction in Fees (October 19, 2006)

IESO Announces Members of Stakeholder Advisory Committee (October 3, 2006)

IESO Issues 18-Month Outlook (September 25, 2006)

IESO Extends Power Warning  (August 2, 2006)

IESO Declares Power Warning As Hot Weather Strains System  (August 1, 2006)

Ontario Sets New Record for Peak Demand  (August 1, 2006)

IESO Board Announces New President and Chief Executive Officer (June 30, 2006)

IESO Releases 18-Month Outlook  (June 23, 2006)

IESO Releases Ontario Reliability Outlook (June 9, 2006)

Power System Better Prepared for Summer 2006 (May 29, 2006)

IESO Issues 18-Month Outlook for Ontario's Power System (March 24, 2006)

IESO Releases Electricity Reliability Report (February 2, 2006)

IESO Releases 2005 Generation and Consumption Figures (January 26, 2006)

IESO Plans Routine Voltage Reduction Test (January 12, 2006)

IESO Releases 18-Month Outlook (December 22, 2005)

IESO Proposes Fee Reduction (October 28, 2005)

IESO Announces Members of Stakeholder Advisory Committee (October 4, 2005)

IESO Releases 18-Month Outlook (September 27, 2005)

Voltage Levels Restored in the Greater Toronto Area  (September 12, 2005)

Electricity Rebate Update for Ontario Businesses (September 6, 2005)

Ontario's Power System Deals with the Heat (August 12, 2005)

IESO Extends Power Warning (August 10, 2005)

IESO Issues Power Warning for Tuesday, August 9th (August 8, 2005)

IESO Ends Power Warning (August 5, 2005)

IESO Implements Voltage Reductions (August 4, 2005 2:00 p.m. EST)

IESO Extends Power Warning (August 4, 2005)

IESO Declares Power Warning as Hot Weather Strains System (August 3, 2005)

IESO Appeals for Reduced Electricity Consumption as Hot Weather Continues to Strain System (August 2, 2005)

IESO Lifts Power Advisory as Situation Improves (July 21, 2005)

IESO Appeals for Reduced Electricity Consumption as Hot Weather Strains System (July 18, 2005)

IESO 10-Year Outlook Highlights Need for New Facilities (July 8, 2005)

IESO Ends Power Warning (June 29, 2005)

IESO Extends Power Warning  (June 28, 2005)

IESO Looks for Public Assistance to Help Meet Expected Record Electricity Demands  (June 27, 2005 5:00 p.m. EST)

IESO Releases 18-Month Outlook (June 27, 2005)

IESO Declares Power Warning with Expected Loss of Nanticoke Generation  (June 24, 2005 5:00 p.m. EST)

IESO Managing Impact of Nanticoke Shutdown  (June 24, 2005)

IESO 18-Month Outlook Remains Positive  (March 23, 2005)

IESO Releases Generation and Consumption Figures  (January 25, 2005)

IMO 18-Month Outlook Shows Continued Positive Reliability Forecast (December 22, 2004)

Market Surveillance Panel Releases Electricity Market Monitoring Report (December 13, 2004)

IMO 18-Month Outlook Shows Improved Reliability Forecast (September 24, 2004)

IMO Schedules Voltage Reduction Test (July 16, 2004)

IMO Receives Positive Independent Review (July 5, 2004)

IMO 18-Month Outlook Shows Improved Reliability Forecast (June 23, 2004)

Monitoring Report on the IMO Markets (June 14, 2004)

IMO Issues Annual 10-Year Outlook (March 31, 2004)

IMO Releases 18-Month Outlook (March 25, 2004)

IMO Releases 18-Month Outlook (December 19, 2003)

Third Monitoring Report Released on Ontario's Electricity Market (December 18, 2003)

IMO Releases 18-Month Forecast (September 24, 2003)

IMO Releases Details of Power Restoration Effort (August 29, 2003 11:00 a.m. EST)

IMO says Ontario Residents Deserve Special Thanks (August 22, 2003 5:00 p.m. EST)

Electricity Demand Update from the IMO (August 21, 2003 8:00 p.m. EST)

Electricity Demand Update from the IMO (August 21, 2003 11:00 a.m. EST)

Electricity Demand Update from the IMO (August 20, 2003 5:00 p.m. EST)

Electricity Demand Update from the IMO (August 20, 2003 11:00 a.m. EST)

Electricity Demand Update from the IMO (August 19, 2003 6:00 p.m. EST)

Conservation Efforts Need to Continue Throughout the Day  (August 18, 2003 10:00 a.m. EST)

Power Restoration Update from the IMO (August 17, 2003 12:00 p.m. EST)

IMO Asks Ontario To Continue Conservation Efforts (August 17, 2003 8:00 a.m. EST)

Conservation Efforts Helped Stabilize the Ontario Power System (August 16, 2003 7:00 p.m. EST)

Conservation Efforts Still Needed To Reduce the Impact of Further Power Outages (August 16, 2003 7:00 a.m. EST)

Power Restoration Continues - Conservation Still Required (August 15, 2003 6:00 p.m. EST)

Restoration of the Power Grid Continues (August 14, 2003 9:00 p.m. EST)

Major Power Failure Across Northeast US and Most of Ontario (August 14, 2003 7:00 p.m. EST)

IMO Issues Quarterly 18-Month Outlook (June 24, 2003)

IMO to Provide Greater Transparency on Generator Status (April 22, 2003)

Monitoring Report on Ontario Wholesale Electricity Market Released  (March 31, 2003)

IMO Issues Annual 10-Year Outlook (March 31, 2003)

IMO Issues Quarterly 18-Month Outlook (March 25, 2003)

IMO Issues Quarterly 18-Month Outlook (December 23, 2002)

Monitoring Report on Ontario Wholesale Electricity Market Released (October 7, 2002)

IMO Issues Quarterly 18-Month Outlook (September 24, 2002)

Market Development Agreement Established Between Northeastern U.S. and Ontario (July 17, 2002)

IMO Addresses Uplift Charges in Letter to the Editor (July 5, 2002)

IMO Issues Quarterly 18-Month Outlook (June 24, 2002)

Ontario Wholesale Electricity Market Has Successful Start-up (May 2, 2002)

New Electricity Era in Ontario has Successful Launch (May 1, 2002)

CONTACT US

IESO Media Desk:
416-506-2823 or media@ieso.ca

PUBLIC APPEALS

In periods of tight electricity supplies, the IESO may issue a public appeal urging consumers to reduce electricity consumption. Typically, public appeals are issued when extreme weather or unexpected generator outages stretch the system's ability to provide enough electricity to meet demand and required levels of reserve.
• Full list of public appeals since May 1, 2002.

Note: All news releases dated before January 10, 2005 refer to the IESO using its previous name, Independent Electricity Market Operator (IMO).