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.
* Similar in size and shape to an asphalt shingle, a single solar shingle produces 13 to 63 watts. This type of solar device originally had low conversion efficiency, about half the rate of solar panels. However, with technological advances over the last few years, they have been catching up.