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.
A single panel only produces a limited amount of power, but when used as part of a larger system, solar panels can generate and supply enough energy to power a home or commercial building, particularly -- of course -- if you live in a sunny area. Solar panels typically have a lifespan of 20 to 25 years.