Nnanji -> RE: World's Biggest Coal Company Closes 37 Mines as Solar Prices Plummet (7/7/2017 7:21:25 AM)
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ORIGINAL: Musicmystery Now they just need to work on getting the cost down. $7000 for a battery can get steep quickly. I'm not sure where your $7,000 came from. From Thompson's link, Tesla battery for about $7,000 included $1,000 for installation which I'd do myself and an inverter. My inverters run about $3,000 each. You need two that can stack if you want 110 and 220 in this country. So say, according to Thompson's link, $3,000 for a 13.5 kWh battery that must be replaced every three years. My lead acid batteries provide about 52 kwh's for about $3,300 and last seven to ten years from personal experience. As I said, energy storage is where R&D should be spent now. When you rely on the batteries 52kwh for four times the energy and two to three times the life cycle is a much better buy. In Teaks link, the battery for the plant was $50 million and since it's the same technology, just bigger, that three year life cycle is going to get expensive fast. Again, from Thompson's link, a house (it says individual but I'll assume household) uses about 30kwh per day. A 13.5 kWh battery just isn't going to last long on cloudy days. So the household will be running generators or living off the power company. And, replacing $3,000 batteries even three years would buy a lot of electricity from the power company.
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