Before making a choice on how many solar panels you use make a list of all the electrical appliances you use and the wattage and hours utilized by each one. This will be helpful in determining how much solar power you will need. No matter if you decide to install the equipment yourself or have someone else do it, this information will help your choices.
Solar Photovoltaics: Fundamentals, Technologies and Applications Solar Photovoltaic (PV) as power source: Basic energy units eV, kWh and ToE, energy …
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.
Think about the money that you send to your power companies each month. How would you like to keep that money in your pocket? Changing to solar power will do that for you. After you pay off the initial investment, the money you used to pay to the power company will stay in your wallet.