You can sell it to your local utility company. You will get paid for it, and another power plant somewhere (maybe a coal power plant) will need to produce 1 kW less power.
Also I'm not sure that the amount of power I'd be putting back would actually pay for the basic connection fee. It would during the summer months, but during the winter it likely wouldn't, and seasonal connections aren't much cheaper.
I think that's generally the best bet if you can do it.
Is your utility Nova Scotia Power by chance? It appears they support net metering [2].
Everything I mention above will be cheaper than storage (which will start around $13k CAD).
[1] http://scitechconnect.elsevier.com/wp-content/uploads/2016/1... (AC disconnect in this image)
[2] https://www.nspower.ca/your-home/save-money-energy/make-own-... (Nova Scotia Power: Enhanced Net Metering)