Basically, you're right. A system in Ohio will produce 1050 kw/hrs per KW DC, which is about 4 panels, in California that would produce about 1,500 kw/h per KW DC.
Given that the amount of sun OH gets isn't going to change anytime soon, the cost of power from utilities would have to increase about 15-20%, or the cost of solar would have to decrease 15-20% before it would be something that most homeowners would consider a good investment.
Companies are a little different as they can reduce the cost per KW of solar (benefit of a larger system) and they can depreciate the system. Also, for large companies with multiple sites, like Walmart, across states, some times installers blend the rate so every state still pencils out.
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Basically, you're right. A system in Ohio will produce 1050 kw/hrs per KW DC, which is about 4 panels, in California that would produce about 1,500 kw/h per KW DC.
Given that the amount of sun OH gets isn't going to change anytime soon, the cost of power from utilities would have to increase about 15-20%, or the cost of solar would have to decrease 15-20% before it would be something that most homeowners would consider a good investment.
Companies are a little different as they can reduce the cost per KW of solar (benefit of a larger system) and they can depreciate the system. Also, for large companies with multiple sites, like Walmart, across states, some times installers blend the rate so every state still pencils out.