The price of solar cell depends on several factors:
* Type panel / technology / efficiency
* The size of the panel and the power generated in Watts per hour

Approximate prices for 50 Watt Peak panel is approximately Rp. 2.5 million in Jakarta. So the price per Watt Peak is around Rp. 50 000. Prices will continue to fall due to several factors:

* Number of users who increasingly large (because of the awareness of energy use and green)
* Production of solar cells more
* The price of oil and coal is getting expensive
* The development of solar cell technologies (solar cell)