The price of a 50 kW solar system varies widely depending on labor costs, equipment brands, inverter type, and whether storage batteries are included. Off-grid systems or those with storage are 30%–60% more. . The term 50 kW solar plant cost refers to the total investment required to build a solar power system with a 50 kilowatt capacity. Investors also factor in energy output and payback period. . Flexible, Scalable Design and Efficient 50kVA 50kW Solar Power Plant. With Lithium-ion Battery Off Grid Solar System For A Factory, Hotel, or Village. What is contained in a 50kW solar power plant? The following configurations make up a complete 50kva 50kW solar power plant: 1)87pcs 16mm2*35CM,6pcs. . Below is an exploration of solar container price ranges, showing how configuration choices capacity, battery size, folding mechanism, and smart controls drive costs.