Abstract
The technical-economic efficiency of fixing PV power plants in the 1 MW model was studied by using the PVSYST program. This model installed at Sakon Nakhon Rajabhat University. The solar panels of mono-crystalline silicon solar panels and poly-crystalline silicon were compared to the capacity of 325 W based on technical and economic efficiency. It was found that mono-crystalline silicon energy produced has entered the grid system, performed more than 1 MWh/year (0.06 %). The main reason is due to the higher losses at poly-crystalline solar panels (0.09%) to the same losses in the inverter (-1.76%), but mono-crystalline silicon has a better performance ratio (average 79.7%). In economics, the mono crystalline silicon solar cells should be used to generate electricity because the capacity is 1,618 MWh/year and the cost of electricity generation is 0.76 baht/kWh with a payback period of 4 years and 4 months.
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