Next let's estimate the capital cost of the solar system in dollars per kilowatt. Use Figure 7 from the US National Renewable Energy Laboratorys 2015 US Photovoltaic Prices and Costs Breakdown report.

Since this will be a small system, use values for residential systems. For simplicity, include only the hardware costs and installation labor (sometimes called "direct labor") costs, and assume that the installation labor only costs half as much as in the US. You may ignore all other costs (permitting, profit, supply chain costs, etc).