Depending on these variables, such as (but not confined to) location, installation complexity, type of components used, and so on, the costs of a 15 kW solar system can vary very significantly. Below are some rough estimates: Average Cost: Normally speaking, the cost of the 15 kW solar system hovers between ¥90,000 and ¥150,000 ($12,500 to $21,000) without taking any government incentives or subsidies into consideration. Cost per Watt: This would be around ¥6 to ¥10 per installed watt. Cost Breakdown Solar Panel: Depend on wattage, 50 to 56 pieces fall within the range of ¥40,000 to ¥80,000. Inverter: A good inverter will cost in the range of ¥8,000 to ¥15,000. Installation: Labour and installation would cost from ¥10,000 to ¥20,000. Other Costs: Permitting, Inspection, Mounting Hardware could add another ¥2,000 to ¥5,000. Final Comment Price may vary according to market conditions and government policies in your area; it is therefore recommended to get more than one quote from a local installer in order to be competitively priced and also in terms of quality of installation.

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