Well the good thing is that micro inverters have dropped in price quite a bit so having a spare on hand isnt a big deal. I remember them being around $150 and I just looked up the price on a 215 and its $57 now and less if you buy more.
That said are the benefits of micro inverters still worth the extra cost considering the failure rate as well. The sunny boy string inverters seem to keep chugging along for years.
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