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 - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
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