Although BC does not currently have any solar rebates at the provincial level, it is the only province with a PST exemption for solar power.
The Alternative Energy Sources PST Exemption also covers solar thermal, as well as any necessary equipment needed for installation including wiring, controllers, inverters, pumps, and tubing.
Possible note – Clean BC is a helpful provincial resource that offers its own rebates/incentives and the ability to search for other rebates/incentives in your area. Current programs don’t include solar but do include EVs, heat pumps, and more clean upgrades.