PV Gap

Joe Said:

How do you install solar panels without burning them out?

We Answered:

First off, please don't buy it from Amazon. Go to the pros instead like Real Goods who specialize in solar units and you can get a 123 watt output unit like that not only cheaper, but they have all the information and accessories you need to install it and tie into it. Plus they will help you with any questions. See this link below with units with the same or more output than the one you are looking at but $50 to $90 cheaper.

http://www.realgoods.com/category/solar+…

Real Goods and their Solar Institute is probably the oldest and most reliable source for any alternative energy household or business installation. They test and stand behind every product they sell -- Amazon won't offer that kind of service as they are just re-sellers.

Sherri Said:

what is the difference between mono crystalline and polycrystalline solar panels? and which one is better?

We Answered:

Both poly-crystalline and mono-crystalline solar panels are made from the same material, silicon. However the difference is that the poly-crystalline material is made up of millions or billions of small silicon crystals while the mono-crystalline material is actual just that, one large singe crystal of silicon.

Single crystal silicon is more efficient at converting photons to electrons for electricity, the poly-silicon its much less efficient because electrons are captured or generated less efficiently where the crystals of silicon touch. However, even though poly solar panels are not as efficient, they are cheaper to manufacture so they can still be competitive on a $/watt basis. They would just need more area to produce the same amount of electricity as the mono-crystalline panels.

http://www.professionalsolar.com/