How to distinguish the capacity of off-grid solar generator systems

Off-grid solar generator systems are made of solar cell panels, battery , controller and inverter etc. But two most important parts are solar cell panels and inverter. They are interworked together to decide all systems’ function directly what kinds of electric appliance can be loaded. So, when descript the capacity of off-grid solar generator systems, that is according to the solar panels and inverter’s rated output capacity. While you are choosing and purchasing off grid system, must composite these two factors.

The capacity of solar cells is the total wattage of solar panels , it decide that solar generator systems can generate how much electric .For example , 300W solar cell panels, it can be one pieces of 300W panel, also two pieces of 150W panels, that representative under the standard lighting conditions one hour can generate 300WH electronic ( equip to 0.3 degree), which also means 300W solar power systems generate electronic per hour.

The rated of inverter output capacity is the Maximum power which can be output, on behalf of the power to drive a certain electrical. For example, a inverter which rated output power is 1000W, drive the electric appliance power must be less than 1000W. in generally, the electric appliance power can not more than 80% rated power of inverter. If the driven electrical appliances are inductive appliances which instantaneous power are more than  rated power several times , such as electromotor, refrigerator, air-conditioner and washing machine etc, the inverter’rated power must be more than electronic appliance’s about 5-8 times. Therefore, a solar generator kit with 1000W inverter, the driven electronic appliance power must be less 1000W.That is why the home solar power generator system need to pay attention to the type of appliance.

For the set of off-grid solar generator systems capacity, we usually means solar cells panels capacity, sometimes also means the rated output capacity of inverter. A set is equipped with 200W solar panels and 500W inverter power generators, which often called 200W solar power system, or 500W off grid solar system. So, when we purchase , had better to think about these two factors.

The potential of Home solar power generator systems is still in developed-country

Home solar power generator systems as the most attractive renewable energy source in the world, no matter in economic or environmental factors, have a great potential developing. However , there are some difference in the real implementation between developed-country and developing-country. Not for the economic , but their existing power supply policy. Which is also the most important factor in determining the extent to the potential of the solar PV market in each country can be played out.

The United States government proposed the "sunshine roof plan" to the United States has become one of the most important solar power market in the world. Germany is more earlier launch on-grid repurchase subsidy policy, becoming a pioneer of solar power market, Australia is also do that. But the developing-country can implement similar policies is very little. 

Compared with the developed countries, who have more advantages to develop the PV market potential. The reason is that the developed countries have more perfect market operation mechanism and small resistance for government reform, can give full play to the strength of the market. While the developing countries are not the same, the power supply controlled  by some  parts of interest groups, they are not willing to sacrifice their vested interest to push solar photovoltaic power generator. That is to say, the implementation of photovoltaic power generation is more difficult.

Therefore, In the past several years, the solar power generator systems has made great progress in developed countries, but the utilization rate  in the developing countries are still too low. However, with the demand of electricity growth and the lack of power supply , all we think this situation will be break soon.

What kind of family is suitable for solar generator systems?

Writen by Sarah Hwong,Dec.30,2015

With the implementation of a series of domestic photovoltaic policy, many families can built solar generator systems to give their own power. If consider the cost factor, not all families are suitable for installing the solar photovoltaic power generation equipment.  

Whether using solar photovoltaic power generation can save electricity costs for households, this is not absolutely . It needs to according to actual situation of the household electricity using. Investing in solar power is not an absolute number, but depends on the household electricity costs are measured by the cost.

Generally speaking, household consumption is more bigger, more suitable for installing solar home power systems equipment, investment time of cost recovery is shorter. Secondly, the more proportion of electricity at daytime , the more suitable for installation of solar power generation equipment.so there is a small processing plant of the family, shops will be more suitable for installing and using it. The little electricity, especially little use during daytime, these families are not suitable for installing solar power generator systems. because initial investment is a little big. Long-term benefit of power generation projects, regardless of power system capacity is large or small, there is a higher initial investment cost. In the long term, although it is a save a electricity costs project, not all families are willing to bear the initial installation cost .

For home or outdoor areas without electricity, I think they can  install off grid solar generator systems equipment. As the investment cost is several times higher than normal electricity’s,  unable to use normal standard to measure the electricity expenses. Therefore, home or outdoor areas without electricity are not suitable for large-scale power generation equipment investment, but portable solar generator equipment will be a better investment way to solve the basic problem of electricity.