The Cheapest Way to Build Solar Panel

You can actually build solar panels in just less than $200. You can use some alternative materials instead of buying the expensive one.
For the battery, you can use the battery of a car. This can be used to store the energy from the sun. Then the output of a single solar panel can actually light up a bulb, charge a laptop and mobile device and even turn on the DVD player. This can be used in a single room. So with that small amount of installation, you can enjoy the benefit of having a free electricity coming from the energy of the sun.