Bypass the home store and find an electrical supplier.
For permits and inspections start here: http://esasafe.com
You need to do a load calculation to determine the required service size. At the website above you will find links to the Ontario Electrical Safety Code, which you can purchase online. Additionally you can find a "guide", such as "Ontario Electrical Code Simplified", at most bookstores. That one in particular has a section that will assist you with the load calculation, with examples.
Before you invest in any equipment for the microfit program, make sure you have an offer to connect from the utility. Can be a very expensive showstopper if not planned in advance.
Do you have any electrical supplier to recommend?
I have the "Simplified Code".
I've got the OPA conditional offer and contacted the Enwin(local hydro com), they just asked me about building permit, insurance etc. They also had have the meter base located.