1. Where is the solar power system used? What about the sunlight radiation in this place?
2. How much power does the system load?
3, the system output voltage is how much, DC or Exchange?
4. How many hours does the system need to work every day?
5, if there is no daylight exposure of rainy weather, the system needs to continuously supply how many days?
6, the load of the situation, pure resistance, capacitance or electrical sensibility, the start of the current how much?
7, the number of system requirements.