Any online size calculator I've found so far wants to know monthly kwh on electric bill. The contractor I called asked for and I gave same info (I'll try to keep it simple with monthly average of 929kwh). Grid tie, no battery, he says 9 kwh. (24 panels x 380w).
I think the flaw is:
1. Some of that POCO usage is at night when sun don't shine.
2. I've seen online that central Indiana averages 4-1/2 hours of sunlight - hey, its online so its gotta be true, right?
3. My REMC (POCO) allows me to graph my hourly usage. I printed the whole year and checked. My one hour peak of all all year is 7.5kwh. I have only had 78 hours out of a whole year that was 6kwh or higher (0.89%). And only 11.27% of hours are above 3kwh.
4. My REMC (POCO) charges me $0.1058 per kwh during "daytime" and would pay me $0.04389 per kwh for excess solar power.
I can't see that those 4 pennies are ever going to payback a 9kwh system. Where am I wrong?
Thanks!
I think the flaw is:
1. Some of that POCO usage is at night when sun don't shine.
2. I've seen online that central Indiana averages 4-1/2 hours of sunlight - hey, its online so its gotta be true, right?

3. My REMC (POCO) allows me to graph my hourly usage. I printed the whole year and checked. My one hour peak of all all year is 7.5kwh. I have only had 78 hours out of a whole year that was 6kwh or higher (0.89%). And only 11.27% of hours are above 3kwh.
4. My REMC (POCO) charges me $0.1058 per kwh during "daytime" and would pay me $0.04389 per kwh for excess solar power.
I can't see that those 4 pennies are ever going to payback a 9kwh system. Where am I wrong?
Thanks!
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