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.
American-made vs imported panel costs. American-made solar panels generally cost from 80Â¢ to $1 per watt (W) â about 10-30Â¢ more per watt than imported panels. The highest quality, âpremiumâ American panels may even come in around $1.25/W.