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The Solar Edge kit are not inverters, they just supply DC from each panel individually to the inverter. They call them power optimizers. They add around 5% to our installation cost - each 'optimizer' is around £50 and we need 12. I agree that they are not worth it for most installations. But with gradual shading moving over the roof from mid afternoon, it was the only way to get the most out of the panels which were not shaded.
We fully realize that it's new technology and will be out of date in a few years. But the optimizers have a 25 year guarantee so as long as Solar Edge are in business we should OK on that front. And their inverter has a 12 year guarantee, which is better than most others. If they go bust of course, then we have an issue. But we still have the panels on the roof which can be reconnected up in the standard way to either their inverter or another one.
One advantage for the geek in me is that I can monitor on my PC the power output of each panel.
But yes, we realize we're doing something a bit different. I'd rather take a risk and if it goes belly up, so be it. Better that than join the ranks of those who never do anything other than give reasons why they don't do it! (not you by the way - hope your installation goes OK as well!).
Cheers
Phil |
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