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Can I claim my mortgage interest if I have a microfit solar installation?

I have a micro fit solar panel installation.  I have taken out a loan for it.  To save on interest, I want to refinance my mortgage and increase the amount by the size of the loan.   Can I claim the mortgage interest on the amount I increase the mortgage?  If so, how long do I have to pay it other words, if I have a 25 year amortized mortgage, can I claim the interest for the full 25 years?