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.
Solar panels normally retail for around $1 to $3 per watt and range between 150 and 350 watts per panel, making the average cost of a single panel between $200 and $350. If you re installing one panel, high-quality, high-output options are ideal.