光伏发电这么虎？

[wildthing]

种地需要水。太阳能发电不需要水。

太阳能板需要用水清洗
当然比种庄稼少但也不是完全不要水

[verdelite]

太阳能板需要用水清洗
当然比种庄稼少但也不是完全不要水

这可以用压缩空气清洁。

[awaydream]

这种只讲好处，不讲坏处的，感觉不靠谱。

这些玻璃板在沙漠里面， 大风扬沙， 摩来擦去， 能撑多久都是很难说的。
清理灰尘，也是很大的费用，感觉回本是个大问题。

[牛河梁]

太阳能板需要用水清洗
当然比种庄稼少但也不是完全不要水

光伏可以不清洁。清洁需要人力和自动设备。是一个成本。西方的光伏就多不清洁。用到一定年限钱赚够了就全部拆掉换新的（更高效率）的板子。

中高纬度地区光伏板角度也高，沙尘不容易积累。不像火星探测器那样的水平太阳能板。即使是火星车，也能活6-12年。

[awaydream]

你这个说法是很扯的。

灰尘积到太阳能板后， 有瘢痕的地方， 就会出现过热，严重了，会导致火灾， 太阳能板着火。
walmart很多店面楼顶就装过太阳能板， 后来火灾太多， 就全部拆掉了。

不知道你是用的火星的免维护的太阳能板吗？

光伏可以不清洁。清洁需要人力和自动设备。是一个成本。西方的光伏就多不清洁。用到一定年限钱赚够了就全部拆掉换新的（更高效率）的板子。

中高纬度地区光伏板角度也高，沙尘不容易积累。不像火星探测器那样的水平太阳能板。即使是火星车，也能活6-12年。

[awaydream]

After seven roof fires, Walmart sues Tesla over solar panel flaws
Tesla "engaged in widespread, systemic negligence," Walmart lawsuit says.
TIMOTHY B. LEE - 8/21/2019, 9:15 AM

Walmart filed a multi-million dollar lawsuit against Tesla on Tuesday. The retail giant says Tesla's "negligent installation and maintenance" of solar panels caused fires on the roofs of as many as seven Walmart stores since 2012.

Most people think of Tesla as an electric car manufacturer, but Tesla also sells other products related to renewable energy. Since the 2016 acquisition of SolarCity, Tesla has had a substantial solar panel business. Walmart hired SolarCity to install and manage solar panels on the roofs of more than 240 Walmart stores. Unfortunately, Walmart says, these solar installations had a habit of catching fire.

One fire broke out in March 2018 on the roof of a Walmart in Beavercreek, Ohio.

"Local news photographs and videos of the store showed a tremendous plume of black smoke emerging from flames as firefighters arrived at the scene," Walmart says in its lawsuit. Customers and staff were evacuated safely, but the fire did extensive damage to the store and destroyed hundreds of thousands of dollars in merchandise.

In May 2018, Walmart suffered two blazes just eight days apart—one in Denton, Maryland and the other in Indio, California. The Indio fire alone did millions of dollars of damage, Walmart claims.

Walmart had previously suffered fires at stores with SolarCity installations in 2012, 2016, and 2017, but the company had written these off as isolated accidents. But a string of three fires in as many months was hard to ignore. So Walmart asked Tesla to deactivate all of its Walmart solar panels pending an investigation. Even after this was done, Walmart suffered another fire at a store with Tesla solar panels—this one at a Yuba City, California store in November 2018.

“Widespread, systemic negligence”
Walmart says that Tesla's own inspections revealed "a total of 157 action items requiring repairs or replacement of system components, 48 of which Tesla itself characterized as reflecting conditions that rendered the sites unsafe or potentially unsafe." Walmart's own follow-up inspections turned up even more problems, the retailer charges.

Walmart's investigation "revealed that Tesla had engaged in widespread, systemic negligence and had failed to abide by prudent industry practices in installing, operating, and maintaining its solar systems," Walmart claims.

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FURTHER READING
Tesla to cut nearly 20 percent of its SolarCity installation locations
Walmart further says Tesla has been stiffing it on the costs of dealing with the defective solar panels.

"Despite months of back-and-forth with Walmart, Tesla has yet to pay one cent of the out-of-pocket damages and consulting/inspection fees that Walmart incurred as a result of the fires at Denton, Indio, and Yuba City, as well as consultant and attorneys' fees related to the Beavercreek fire," Walmart writes in its Tuesday complaint.

Tesla has not yet responded to a Tuesday afternoon email seeking comment.

Walmart's lawsuit is more than 100 pages long, with pages of detailed explanations of Tesla's alleged installation problems. Under its contract with Walmart, Tesla is supposed to do regular maintenance on the solar panels. But Walmart says Tesla failed to properly hire, train, and supervise the contractors doing installation and maintenance work for Tesla.

Among the problems Walmart claims to have identified:

"Many of the Tesla solar panels inspected by Walmart were suffering from hotspots, resulting in cracking of the back sheets on solar modules and compromising electrical insulation."
"Making matters worse, Tesla had flagged or identified hotspots by placing pieces of tape over the affected areas. Because this tape prevented sunlight from reaching the solar panel, it exacerbated the problem by further concentrating heat."
"Tesla teams consistently failed to torque (or tighten) field-made connectors." "The lack of torqueing [sic] leads to moisture and water intrusion."
"Sharp points—from, among other items, rough concrete or metal edges—were cutting into or abrading wires. In other cases, temperature changes resulted in the expansion and contraction of wires over time, moving the wires and resulting in their abrasion or exposure.
Multiple sites had improper grounding.
Walmart says it spent months trying to work with Tesla to fix the problems but found Tesla's responses unsatisfactory. So it's now suing Tesla—seeking not only damages but also approval to remove Tesla's solar panels from its stores.

Tesla's 2016 proposal to acquire SolarCity was controversial from the outset. SolarCity was founded by cousins of Elon Musk, and Musk was an early investor and chairman of the board. Critics charged that Tesla's acquisition of the debt-laden company amounted to a bailout of its shareholders—including Musk himself.

The acquisition does not seem to have turned around SolarCity's fortunes. Tesla's solar panel division has struggled with production problems and declining market share. Many of the workers Tesla laid off earlier this year were in the solar panel division, and Tesla plans to end a partnership with Home Depot at the end of the year.

[awaydream]

以前看中国的节目， 有些人在屋顶装了太阳能板，要经常检查， 一旦发现坏的，立马要换。

什么20年寿命，基本是鬼扯。

[wildthing]

以前看中国的节目， 有些人在屋顶装了太阳能板，要经常检查， 一旦发现坏的，立马要换。

什么20年寿命，基本是鬼扯。

确实是。
网上有好多太阳能板着火的照片
这东西在屋顶上维护起来麻烦的很。

[FoxMe]

那么维护运营成本比较高。

[FoxMe]

研究了一下，本民科跟着涨了点姿势

http://digitalpaper.stdaily.com/http_ww ... htm?div=-1

感觉大爆炸理论不太可信，最初的能量从哪里来的？没有回答这个基本问题，和上帝差不多。

[BCQ1]

沙漠里都是飞沙走石吧，尘暴一来，全埋地下吧，
三天两头的沙暴尘暴，飞沙走石，
你以为这是风和日丽的地中海

[verdelite]

你这个说法是很扯的。

灰尘积到太阳能板后， 有瘢痕的地方， 就会出现过热，严重了，会导致火灾， 太阳能板着火。
walmart很多店面楼顶就装过太阳能板， 后来火灾太多， 就全部拆掉了。

不知道你是用的火星的免维护的太阳能板吗？

网上查了一下，说起火的是逆变器，电缆，接线盒之类。并非太阳能板自身起火。

http://m.solarzoom.com/article-161378-1.html

[Caravel]

感觉大爆炸理论不太可信，最初的能量从哪里来的？没有回答这个基本问题，和上帝差不多。

楼歪了，大爆炸充其量是当前可见宇宙的起源理论，既不能代表过去，也不能代表所有

[Caravel]

网上查了一下，说起火的是逆变器，电缆，接线盒之类。并非太阳能板自身起火。

http://m.solarzoom.com/article-161378-1.html

关键一步是中国把单晶硅多晶硅价格降低到一成

[FoxMe]

光伏治沙牛！理论上如果把沙漠的大部分日照能量都变成电，沙漠就会变成绿地。

现在我鳖的创新很多，比如用盐碱地的水养海虾，治理盐碱地。

[verdelite]

光伏治沙牛！理论上如果把沙漠的大部分日照能量都变成电，沙漠就会变成绿地。

现在我鳖的创新很多，比如用盐碱地的水养海虾，治理盐碱地。

美国盐湖城的大盐湖里面就有虾。比海虾耐盐度变化更历害。可以进口来养。

[awaydream]

不止逆变器着火，主要是尘垢导致的那个黑斑，
然后那个区域就会格外热，发电效率低，时间长了，就出defect，厉害了就着火。

稍微有点科研经验的，很容易理解的

[verdelite]

不止逆变器着火，主要是尘垢导致的那个黑斑，
然后那个区域就会格外热，发电效率低，时间长了，就出defect，厉害了就着火。

稍微有点科研经验的，很容易理解的

这个我理解不了。黑斑发电效率低，顶多是吸热多；也就相当于太阳晒黑玻璃。玻璃本身不是可燃物。单晶硅可燃吗？我觉得不可燃。那怎么会着火。

[lahei]

清理机器人了解下，太阳能板都是自动清洁

[牛河梁]

以前看中国的节目， 有些人在屋顶装了太阳能板，要经常检查， 一旦发现坏的，立马要换。

什么20年寿命，基本是鬼扯。

胡说八道。我的光伏虽然没有20年。但现在这么看，20年下来啥都不用干照样发电。