When selecting solar panels, don't just go by price. Panels can vary by size, wattage, brand, warranty, performance and materials. Because of this, you should thoroughly research all the solar panels and select the highest quality one rather than the cheapest one. Purchase the highest quality panels that your budget will allow.
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 …
Keep your solar panels out of the shade. It might seem obvious, but your solar panels do need sun. Make sure that you are not installing them in the shade. Trim back the branches on surrounding trees if you need to. Failing to do so could cost you more than half your energy output.
Do not let a salesperson pressure you into purchasing solar panels. A solar energy system is an important investment and you should take the time to compare your different options. If a vendor feels the need to pressure you, they might not be confident about the quality of their products.