The average price of a 500 kw solar system is $10. Solar panel production (kwh) kilowatt hour calculator to see how much solar will save you on your electricity bill. As Maxbo, a professional one-stop solar solutions provider, I'm here to explain how these systems. PVMars lists the costs of 250kW, 300kW, 500kW solar plants here (Gel battery design). If you want the price of a lithium battery design, please click on the product page of the corresponding model to find out. However, most installers estimate solar costs by the amount of energy needed, at $4 to $10 per square foot. Trina Solar, Panasonic or Canadian solar well known. If you're planning to invest in a 500 kW solar power plant, it's one of the most scalable and profitable clean energy solutions Nowadays A 500 kW solar energy system can power 200–250 urban homes or supply consistent electricity for industrial, commercial, or agricultural needs.