First step: build a frame
Depending on how large you want your solar panel to be, create a frame from a piece of plywood, then take another piece of plywood and fix it inside the frame. Use some screws so that the panel gets into place. The frame must not be too tall, or you will partially lose the power of sun rays you can harness with your panel. Sand and dust the entire surface and then apply some UV resistant paint over it. Two coats should be enough.
Placing the solar cells
Now that you have a panel, you just need to make it into a solar panel. For this, you will need solar cells. With the help of some tile spaces, place the cells in a row, and connect them using bus wire. This will ensure that they will remain in place, when you will mount them on the panel. Make sure to take some measurements before getting to work, as it would be a disappointment to start disassemble them, because they are too many and do not fit the frame constructed earlier. When you learn how to build solar panels, this is a very important aspect.
Creating the connections
Now that you have a real net of solar cells, they will have to go into the frame. However, you will need to connect and wire them, so you can harness the energy they will create from the sun. Place them over the frame, to see where they will be, then create holes for all the screws that will be needed when putting the cells over the frame for good. Two holes at the end of the plywood frame will also be needed for the negative and positive connections. This is how to build solar panels from scratch.
Glue the solar cells to the panel
Use silicone for this step. Make sure that the cells are in place, and bring the wires holding the strings together so they can generate energy. Solder the bus wire from the solar cells to the panel. Now what you need is a charge controller, to attach the connections from the frame. The other side of the charger has to be hooked with a battery, and that has to be connected with an inverter. That's all! Knowing how to build solar panels will help you reduce the carbon footprint and pay a little less for your energy bills.