Many power companies offer grid-tie (net metering) hook-ups and some do not. Those that do charge all their customers a fee for it (hidden in the monthly bill).
A run-of-the-mill solar grid-tie system is required to shut-down whenever the grid shuts down. So just when you need the solar the most - you have nothing. Adding a battery bank allows a grid-tie system to wired in such a way that it can be made to work when the grid is out. Also - with no batteries - if the grid goes down at night or a cloudy day - no sun means no power.
Batteries are a huge expense that always go bad at some point. It would be nice to find a way to avoid them. In Holland - excess solar electric is used to run electric motors making compressed air in huge tanks. Later when needed - the air is let out and it spins turbines making electric power. Not exactly cheap, I'm sure.
Jennifer's L16 Trojan batteries are cheaper then mine. I was not allow to use Trojan because when something is partially funded by tax incentives -a requirement is a minimum of a 5 year warranty. Trojan would not give a 5 year warranty . So I was forced to use Rolls-Surette from Canada.
Note that one factor that remains unseen. If power rates take huge hikes into the future - we solar owners will be making out pretty well.
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Today's Featured Article - Farming Never Left My Blood - by Stan Gordon. I was born in 1947 youngest of ten of a working farm. Our farm was located in Saskatchewan near Saskatoon. We had a mixed farm consisting of grain and dairy all done with old machinery and by hand. My dad had a tractor, a Farmall A which was used mostly to run the thrashing machine, a seed drill and for plowing. I remember locals used to help each other and threshing was done from daylight to after dark, one farm to another until all farms were done.
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