The IESO (Independent Electricity System Operator) ensures the reliability of the province’s power system, balancing the supply of and demand for electricity.
Check out the link to see the real-time power data for the Grid, including solar pv and wind power generation.
During grid outages PV Inverter production cannot occur, so a home with a PV inverter system installed will not have power during an outage. However for homes that have a PV Inverter system installed and are already selling power to the grid, it is still possible to retrofit backup power.
Visit Schneider Electric guide to Grid-Tied Solar with Battery Backup.
Frequently Asked Questions from Hydro One Networks in Ontario