Utility scale solar installation typically ranges from 1MW to 5MW (Megawatts). This is the largest solar installation project. These projects require huge acres of land. Solar PVs are ground mounted and use solar trackers to maximize solar energy generation.
A utility-scale solar facility is one which generates solar power and feeds it into the grid, supplying a utility with energy. Virtually every utility-scale solar facility has a power purchase Agreement (PPA) with a utility, guaranteeing a market for its energy for a fixed term of time. The only other way to sell solar power to a utility is through net metering where generated power is used on-site (typically from the rooftop of a house or business), and excess power is fed into the grid, purchased by the utility from the producer on a per-kilowatt-hour basis.