How heat affects solar panel performance

It may seem counter-intuitive, but solar panel efficiency is affected negatively by temperature increases.  Photovoltaic modules are tested at a temperature of 25 degrees C (STC) – about 77 degrees F., and depending on their installed location, heat can reduce output efficiency by 10-25%.  As the temperature of the solar panel increases, its output current increases exponentially, while the voltage output is reduced linearly. In fact, the voltage reduction is so predictable, that it can be used to accurately measure temperature.  

What makes a solar panel last?

https://www.civicsolar.com/support/installer/articles/what-makes-solar-module-last

A solar panel is constructed from many layers, all of which play a vital role in the panel’s capacity to produce electricity and its ability to withstand environmental stresses and the rigors of prolonged use.  

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Which battery is best?

LG launches lithium-ion batteries for solar in U.S.

http://solarindustrymag.com/lg-chem-launches-residential-battery-systems-north-america

LG Chem Ltd., a provider of lithium-ion batteries for automotive, stationary and consumer applications, has formally launched its range of residential battery systems in the North American market.

Nano Carbon Lead Acid technology pricey but impressive

At $17,000 per battery, they can be cycled 5000 times.  That is 5 times more than regular lead-acid but the price is more than 5 times higher.  But, it's a new technology and prices will surely drop, perhaps dramatically.

https://www.civicsolar.com/support/installer/articles/bridge-nano-carbon-lead-acid

 

First interdigitated back contact (IBC) n-type solar cells based on 6-inch wafers

http://ir.yinglisolar.com/phoenix.zhtml

ECN is focusing its research on n-type silicon solar cells as these are potentially more efficient than p-type cells and are less sensitive to degradation and impurities. Additionally, the back contact design of solar cells offers several advantages. They exhibit a higher voltage and deliver a higher current, because of reduced losses via recombination and a larger surface on the sunny side.

The Rise Of Solar: A Unique Opportunity For Copper

13,000 central Utah customers out of power because they chose Rocky Mountain Power over self power

No utility is always up.  But they do charge millions or billions of dollars.  Smart citizens save the money they would have given the utility for a perpetual debt that never gets paid off and bought their own solar panels.  Now, their power only goes off when they turn it off.

http://www.ksl.com/?sid=43673730&nid=148&title=power-restored-after-outage-in-central-utah-causes-over-13k-customers-to-lose-power

Utah Gov Herbert hates solar

It's no secret that Herbert is a liberal.  Some suggest he even dances naked on a pentagram while drinking crows blood and chanting praises to Satan.  His hatred for the little guy was recently exposed as he signs law making an alcohol content of .05 a crime.  Now he has removed all incentives for citizens to go solar.  The very last thing he wants is for people to be energy independent.  He receives millions from big (and highly faulty) utilities.  One might say that no governor in the history of the United States hates his constituents more than Herbert. 

What causes battery failure

Battery life and performance - Average battery life has become shorter as energy requirements have increased. Two phrases I hear most often are "my battery won't take a charge, and my battery won't hold a charge". Only 30% of batteries sold today reach the 48-month mark. In fact 80% of all battery failure is related to sulphation build-up. This build up occurs when the sulfur molecules in the electrolyte (battery acid) become so deeply discharged that they begin to coat the battery's lead plates.

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