Power supply and demand index
HU Zhao-guang (State Power Economic Research Institute, Beijing 100761,China)
Electricity is an important kind of resource for human living and economic development. Power supply must meet the demand. Any power shortage will be a barrier of economic growth. However, the surplus of power generation capacity will lower the power system efficiency. How to evaluate the balance of power supply and demand is very important. There is still no such index to do that. The power supply and demand index was studied to measure the balance of power supply and demand, and to give the calculation method for nationwide evaluation of the index.