Chinanews, Beijing, August 28 – According to several solar energy experts, China has become the biggest solar energy developer in the world. The solar energy used by China is equal to the heat of 200 million tons of standard coal. Besides, China is also the biggest solar energy market in the world as well as the biggest solar energy heater producer. China boasts has 90% of the world’s key technologies for solar energy development, and has forged several competitive brands in this field.