12 kW size grid-connected solar kits include solar panels, DC-to-AC inverter, rack mounting system, hardware, cabling, permit plans.
How much power does a 7kW solar system produce per day compared to a 15kW solar system? As a general rule of thumb, a 7kW solar system should produce between 30kWh and 40kWh every day whereas a 15kW system can produce an average of 60kWh each day.