Backup Generator versus Battery Powerwall
We are building a 2300 SF “pretty good” house in Climate Zone 6 in northern Vermont using all-electric systems (heat pumps and in-wall electric heaters). Considering two alternates for backup power: 1) exterior pad-mounted propane backup generator 2) Tesla (or other) battery power wall units in conditioned basement. We know that the propane generator takes us away from our “no fossil fuel goal” but it is necessary to have backup power in VT.
Does anyone have a breakdown/cost comparison of these two options that they can share with us? Any/all feedback is welcome
Thanks in advance
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