solar panels also known as Solar-powered photovoltaic convert sun rays in to electricity by exciting electrons in silicon cells using the photons of light from the sun. This electricity can then be used to supply renewable energy to your home or business. Since one solar panel produces about 1 kWh per day, you would use 30 solar panels to account for 80% Bad Things About Solar Panels. ... Solar power harnesses energy from the sun and transforms it into energy that can be used by consumers. One of the most common ways this power is harnessed is solar panels, also known as photovoltaic panels. Unfortunately, there are some disadvantages to the panel system. solar panels are better for the eniviroment cause there are no greenhouse gasses. electricity from solar power is a very important energy source in the move to clean energy production. they do not work for every roof type they are not ideal if u move and buying panels can be expensive and if there is a black out they will not work they do not work when it is cloudy. they will reduce u electric bill. If it is raining solar panels will still work they last up to 25 years.u need to replace them after 10 to 15 years.