In Ontario there are three different ways you can use solar.
Microfit (no longer available as of December 2017) – This was a program offered by the Ontario government where if you put solar panels on your roof they would guarantee to buy as much power as you produce for the next 20 years at a set rate. This program was quite popular but is no longer offered.
Net Metering – This is the simplest program to understand. You generate the power and you use it. Excess power can be stored in the grid for up to 12 months.
Off-Grid – This type of system is used when there is no grid connection available. This is typically used for remote sites.
Grid-interactive Net Zero – This is a hybrid of net-metering and off-grid. It is typically used when the utility will not allow a standard grid-tie system.