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<blockquote data-quote="Ovinomancer" data-source="post: 6778860" data-attributes="member: 16814"><p>Lead batteries are a very poor choice due to their rotten volume/energy ratios. It takes a lot of lead to make a battery of sufficient size, and the few projects that are using lead batteries are transitioning away to other types due to the cost and maintenance (lead batteries are high maintenance as well). Also, the only grid level battery installations are for power load balancing, not storage. The Powerwall might help you in your home, if you have the money and space for one, but it's not a grid level solution at all. It's still a novelty.</p><p></p><p>You should read your links -- the costs for solar below gas are due to the massive Federal subsidies. The first one you link says there is concern because the solar installation has to be up and running by the end of 2016 (it hasn't broken ground yet) in order to qualify for the Federal subsidies and be able to deliver that price. In general, if anything says it's cheaper than nat-gas right now, it's because they're hiding part of the cost. In this case, their hiding it behind the subsidies.</p><p></p><p>Finally, while doping has an impact, we're at the limit for what can be done with common elements for the doping. There's a fine line in doping where adding more dopant just degrades the crystal matrix, which is what actually allows the semiconductor to work -- ie more doping is harmful past a specific point. That point different depending on the dopant, and there's been years of study on this. The high efficiency cells that are in labs right now all have pretty wild chemistries, and none of them are remotely cost effective (when they can actually stand a non-lab environment, which is also uncommon). We may find something that works better(and I hope so, I keep waiting to read about a cost-effective breakthrough on solar), but it's highly unlikely to be with silicon.</p><p></p><p>But props for mentioning doping!</p></blockquote><p></p>
[QUOTE="Ovinomancer, post: 6778860, member: 16814"] Lead batteries are a very poor choice due to their rotten volume/energy ratios. It takes a lot of lead to make a battery of sufficient size, and the few projects that are using lead batteries are transitioning away to other types due to the cost and maintenance (lead batteries are high maintenance as well). Also, the only grid level battery installations are for power load balancing, not storage. The Powerwall might help you in your home, if you have the money and space for one, but it's not a grid level solution at all. It's still a novelty. You should read your links -- the costs for solar below gas are due to the massive Federal subsidies. The first one you link says there is concern because the solar installation has to be up and running by the end of 2016 (it hasn't broken ground yet) in order to qualify for the Federal subsidies and be able to deliver that price. In general, if anything says it's cheaper than nat-gas right now, it's because they're hiding part of the cost. In this case, their hiding it behind the subsidies. Finally, while doping has an impact, we're at the limit for what can be done with common elements for the doping. There's a fine line in doping where adding more dopant just degrades the crystal matrix, which is what actually allows the semiconductor to work -- ie more doping is harmful past a specific point. That point different depending on the dopant, and there's been years of study on this. The high efficiency cells that are in labs right now all have pretty wild chemistries, and none of them are remotely cost effective (when they can actually stand a non-lab environment, which is also uncommon). We may find something that works better(and I hope so, I keep waiting to read about a cost-effective breakthrough on solar), but it's highly unlikely to be with silicon. But props for mentioning doping! [/QUOTE]
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