When you want to retrieve data from a database, you ask for the data by using Structured Query Language, or SQL. SQL is a computer language that closely resembles English, but that database programs understand. Every query that you run uses SQL behind the scenes.
The inverter turns the DC electricity generated by the solar panels into 120-volt AC that can be put to immediate use by connecting the inverter directly to a dedicated circuit breaker in the electrical panel.
What you'll pay for solar panels varies by your state and the size of the solar panel system. Simply put, the more energy you want to generate, the more solar equipment you'll need to get. But on average, solar panels will cost you $3.70 per watt. This means the average-size 5-kilowatt solar system would run about $18,500.