The cost of a 500 kW solar power plant in India typically ranges from ₹2. 25 crore, depending on installation type, location, and additional infrastructure expenses. From $1 to $3 per watt, leading to a total cost estimate between $500,000 to $1,500,000, 2. Numerous. A 500kW system, with a total investment ranging from €200,000 to €350,000, is perfect for medium to large-scale operations looking to save on electricity costs while transitioning to clean energy. As Maxbo, a professional one-stop solar solutions provider, I'm here to explain how these systems. This high-power, low cost solar energy system generates 500,320 watts (500 kW) of grid-tied electricity with (848) 590 watt Axitec XXL bi-facial model AC-590TGB/144, SMA Sunny Highpower three-phase inverter (s), DC string combiners, 24/7 monitoring,.