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.
Estimating how much energy solar will generate. If you have 10 solar panels, each rated at 300W, the entire system will produce 10 * 300W = 3,000W. However, it will only produce that much power if the sun hits it at a perfect angle and the panels are at a perfect temperature.