What are solar panel inverters? What are they good for?
Solar inverters are used primarily to change direct current to alternating current via an electrical switching process. You can think of inverters used with solar panels as electronically alternators.

Types of Solar Panel Inverters
Stand-Alone Solar Panel Inverters
Synchronous Solar Panel Inverters
Multi-function Solar Panel Inverters

How to calculate the wattage you need from your stand-alone solar panel inverte
 AC_Load_Dryer
+AC_Load_Laptop
+AC_Load_Iron

=Total AC Load

Multifunction Solar Panel Inverters

Multifunction Solar Panel Inverters combine the best of both worlds, and they are usually the best choice for your solar panel system. While more expensive, multifunction inverters may be your best choice. Contact your solar panel dealer for more specific information on Multifunction Solar Panel Inverters.

Modified and pure Sine Wave Inverters

An inverter converts a direct current to an alternating current through a delicate electrical switching process. This process makes an inverter function as a synthesized alternator, which are typically used to produce AC current by creating a smooth alternation, similar to a pendulum gently swinging. This alternation takes the form of a sine wave, which is the ideal wave pattern for transmitting AC power.

a.Modified Sine Wave Inverters

Modified Sine Wave inverters are better in typical solar applications when electric motors are not involved. They are not quite as efficient as true sine wave inverters, but you'll find that they are much more affordable. Unlike true sine wave inverters, modified sine wave intverters produce a stepped waveform, which isn't really a sine wave at all.

Because the current is not alternating perfectly, the stepped waveform of the modified sine wave inverter causes the inverter to generate an irritating buzz. Take this into careful consideration when purchasing an inverter.

b.Pure Sine Wave Inverters

True sine wave inverters are very efficient and have a very accurate waveform to the true sine wave. True sine wave inverters are a little more pricey than modified sine wave inverters because of the reduced noise and their strong compatibility with certain devices, such as electric motors. This is the better option if you value silence, or want optimal performance from electric motors, such as those found in an electric water pump.

To avoid all issues around carbon dioxide, solar energy needs to be competitive compared with fossil fuel grid connected energy. Fast growing economies like China require putting in high efforts in CO2 reduction programmes, as their growth rate of CO2 emission is higher in comparison with developed countries. Forecast for China is around 800 million metric tons in 2010.

A big portion of electric energy is used in air conditioners and lighting. Each saved watt should be regarded as a milestone to come close to target of clean energy solutions. Driven by the encouraged sustainable development policy, it would be a good opportunity for China's photovoltaic industry to burgeon in next couple of years.