nothing
Silicon panels produce STC in production which can be fully recycled creating a closed-loop system. Therefore it produces no bad by-product.
Cadmium Indium Gallium Selenide or CIGS had some concerned that harmful chemicals would be released if the panels were caught in a fire but extensive fire testing found they burning of the cells actually encapsulated the harmful material within the other materials in the array releasing less than even slightly harmful amounts of the material. In addition, such manufacturers as First Solar have created escrow accounts for a forced recycling program meaning all the panels when no longer working will be picked up by the company and recycled. Reusing 90+% of the panels material and removing any harmful possibilities.
Solar array's of course need no fuel and produce no waste simply converting the sun's energy directly into DC energy.
Traditional silicon solar panels when they are recycled either because they are being replaced or have become damaged can be almost fully recycled as well as the valuable materials which are basically silicon, aluminum, steel, copper, and glass all of which can be recycled.
The other harmful chemicals present of course are lead, cadmium, selenium, tetrachloride, and indium. However, between modern sealed landfills, the trace amount of these materials and the economic incentive from recovering the materials in panels these are not a significant or even minor threat to the environment.
http://www.thedailygreen.com/environmental-news/latest/solar-panel-recycling-460810
Solar energy is not bad, however, the production of materials to produce free, clean energy has its negatives. For instance, it requires a great amount of fossil fuels and using rare materials to make the solar panels. Chromium and mercury are waste materials that cause disposal issues.
Disadvantages: May not produce enough energy to run appliances, solar radiation
the bad thing about solar energy is that is thatfirstly the amount of energy we get from the sun is dilute even in the hot desert of world and secondly the technology we use for this energy is very expensive.
A question about solar energy could be: what is solar energy?: what does solar energy do?:does solar energy do anything for the earth/planet?
You can use solar energy to power your house. You will need to get solar panels to convert solar energy to usable energy.
Solar energy is not bad, however, the production of materials to produce free, clean energy has its negatives. For instance, it requires a great amount of fossil fuels and using rare materials to make the solar panels. Chromium and mercury are waste materials that cause disposal issues.
Disadvantages: May not produce enough energy to run appliances, solar radiation
the bad thing about solar energy is that is thatfirstly the amount of energy we get from the sun is dilute even in the hot desert of world and secondly the technology we use for this energy is very expensive.
They will be useless without light
If it is cloudy or rainy for a few days strait you may have trouble using solar energy
it is bad because you can not use it in bad weather also it cost alot and it takes alot of space
I can't think of any way it would be harmful.
No, they reduce energy within a building to save the planet.
They are good because they reduce energy to save the planet.
No, because it is a renewable energy source, which is needed on Earth.
It doesn't it consumes energy and then is bad for our Earth
Because your not using gas or other that hurt the environment and use those bad things cause globe warming, but solar energy is the energy that you get in the environment