Buy the lowest cost 50 kW solar kit priced from $1. SunWatts has a big selection of affordable 50 kW PV systems for. . This high-power, low cost solar energy system generates 50,150 watts (50 kW) of grid-tied electricity with (85) 590 watt Axitec XXL bi-facial model PS590M8GF-24/TNH, GoodWe single-phase string inverters, 24/7 monitoring, disconnect box, rooftop mounting,. Compare price and performance of the Top. . What Does “50 kW Solar Plant Cost” Mean? The term 50 kW solar plant cost refers to the total investment required to build a solar power system with a 50 kilowatt capacity. A 50 kW solar plant typically includes: The cost may cover equipment, installation, permitting, and grid fees. 05KW Solar with Mounting Rails and WiringThis Package is a great package for a Complete Offgrid Home. 50KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter + 32kWh OMO 48V Freedom Series Lithium. . In this section of our website you can find a 50kW solar system to your preference.