Independent Electricity System Operator

Tier 1 - Government, Regulators, Standards Bodies

We cite 18 sources from Independent Electricity System Operator across our Ontario HVAC and home energy guides.

See our verification methodology for how we vet sources.

Cited Sources

• (untitled)
  https://www.ieso.ca/
  Cited in: heat-pump-aux-heat-running-too-much-ontario, heat-pump-seasonal-decommissioning-ontario, home-battery-backup-ontario, hvac-smart-thermostat-c-wire-retrofit-ontario
• Time-of-Use-Rates
  https://www.ieso.ca/en/Power-Data/Price-Overview/Time-of-Use-Rates
  Cited in: heat-pump-first-winter-expectations-ontario, hot-tub-electrical-cost-ontario, seer2-vs-seer-ontario, thermostat-tou-scheduling-ontario
• time-of-use-rates
  https://www.ieso.ca/power-data/price-overview/time-of-use-rates
  Cited in: central-air-conditioner-cost-ontario, gas-vs-electric-heating-ontario, home-battery-worth-it-ontario, ontario-electricity-rates
• Error-404?item=%2fsector-participants%2fenergy-efficiency%2fsave-on-energy-framework&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fsector-participants%2fenergy-efficiency%2fsave-on-energy-framework&user=extranet%5cAnonymous&site=IESO
  Cited in: home-renovation-savings-program-ontario, rebates
• Residents-and-Small-Businesses
  https://www.ieso.ca/Learn/Electricity-Pricing-Explained/Residents-and-Small-Businesses
  Cited in: central-air-conditioner-cost-ontario, home-battery-worth-it-ontario
• 2025-Annual-Planning-Outlook.pdf
  https://ieso.ca/-/media/Files/IESO/Document-Library/planning-forecasts/apo/2025/2025-Annual-Planning-Outlook.pdf
  Cited in: hybrid-heating-systems-ontario
• Error-404?item=%2fget-involved%2fhome-renovation-savings&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fget-involved%2fhome-renovation-savings&user=extranet%5cAnonymous&site=IESO
  Cited in: hvac-oil-furnace-conversion-ontario
• Error-404?item=%2fget-involved%2finnovation%2fpeak-perks&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fget-involved%2finnovation%2fpeak-perks&user=extranet%5cAnonymous&site=IESO
  Cited in: heat-pump-grid-interactive-ontario
• Error-404?item=%2fget-involved%2fsave-energy&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fget-involved%2fsave-energy&user=extranet%5cAnonymous&site=IESO
  Cited in: hvac-ecm-blower-motor-benefits-ontario
• Error-404?item=%2fget-involved%2fsave-on-energy%2fhome-renovation-savings&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fget-involved%2fsave-on-energy%2fhome-renovation-savings&user=extranet%5cAnonymous&site=IESO
  Cited in: hvac-two-stage-vs-modulating-ontario
• Error-404?item=%2fget-involved%2fsave-on-energy&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fget-involved%2fsave-on-energy&user=extranet%5cAnonymous&site=IESO
  Cited in: hvac-for-log-home-ontario
• Home-Renovation-Savings
  https://www.ieso.ca/Error-404?item=%2fget-involved%2fsave-on-energy&user=extranet%5cAnonymous&site=IESO/Home-Renovation-Savings
  Cited in: hvac-two-stage-vs-modulating-ontario
• Error-404?item=%2flearn%2felectricity-in-ontario%2fsupply-mix&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2flearn%2felectricity-in-ontario%2fsupply-mix&user=extranet%5cAnonymous&site=IESO
  Cited in: heat-pump-defrost-cycle-ontario
• Error-404?item=%2fsector-participants%2fconservation%2fhome-renovation-savings-program&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fsector-participants%2fconservation%2fhome-renovation-savings-program&user=extranet%5cAnonymous&site=IESO
  Cited in: hrs-rebate-application-walkthrough-ontario
• Error-404?item=%2fsector-participants%2fplanning-and-forecasting%2fontario-planning-outlook&user=extranet%5cAnonymous&site=IESO
  https://www.ieso.ca/Error-404?item=%2fsector-participants%2fplanning-and-forecasting%2fontario-planning-outlook&user=extranet%5cAnonymous&site=IESO
  Cited in: gas-vs-electric-heating-ontario
• Transmission-Connected-Generation
  https://www.ieso.ca/Power-Data/Supply-Overview/Transmission-Connected-Generation
  Cited in: heat-pumps
• Data-Directory
  https://www.ieso.ca/en/Power-Data/Data-Directory
  Cited in: hvac-summer-brownout-protection-ontario
• Annual-Planning-Outlook
  https://www.ieso.ca/en/Sector-Participants/Planning-and-Forecasting/Annual-Planning-Outlook
  Cited in: hvac-total-cost-ownership-ontario