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Old 06-11-2021, 09:54 AM
davidmash's Avatar
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Quote:
Originally Posted by ah-kay View Post
No grid, no power. It is to sync the incoming AC phase for grid tied system otherwise you can't feed power back to the grid. Grid tied solar with battery backup is more expensive and payback period is long.

Whatever you do, DON'T lease a system.
Definitely not going to lease.

Perhaps I am missing something but if a house that is not even tied to the main grid can have a solar system powering their home, why cant a house that is tied to the grid work the same way but have a switch that cuts off power to the grid when main power fails. They do it for a generator, why not for solar?

This sounds more like a legal issue than a technical one.
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Old 06-11-2021, 10:14 AM
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Join Date: Mar 2009
Location: San Diego
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Quote:
Originally Posted by davidmash View Post
Definitely not going to lease.

Perhaps I am missing something but if a house that is not even tied to the main grid can have a solar system powering their home, why cant a house that is tied to the grid work the same way but have a switch that cuts off power to the grid when main power fails. They do it for a generator, why not for solar?

This sounds more like a legal issue than a technical one.
It can be done but it is just more expensive. Grid tied inverter is cheap. You need a more expensive hybrid inverter to do what you want plus a automatic transfer switch. Any competent sale guy can explain all these to you.
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