Don't forget that SECO has a fixed access charge each month, even if you don't use any of their electricity. A lot of quotes will ask you for your monthly electricity bill and assume that, going forward, that bill will be zero once you install solar. Unless you plan on going completely "off grid" (which will involve you in additional costs for batteries) then you will still need SECO for when the sun goes in.
It can still make financial sense to go solar - just do so with your eyes open.
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