Your solar panels' density will impact their efficiency. Getting high density solar panels may cost you quite a bit, but after a while they'll pay for themselves because they produce more power. Be sure and compare densities before choosing a solar panel.
Panels have to face the sun to draw power. You get the energy from the sun, so it's important for the panels to be located in an area where they can get all the solar energy possible.
I explain how much this system cost and I go over the site plan and electrical diagram in this link https://youtube.com/watch?v=TFwdY0wiBGA Keep in mind …
If you cannot afford a full-scale solar energy system, consider investing in a smaller one. Some vendors offer small systems designed to power a water heater or a generator. This small investment should help you save money within the next few years and you can easily expand your solar energy system by powering more appliances with solar panels.