"Energy security" is usually defined as the guarantee of a stable and reliable supply of energy at reasonable prices. However, this definition is often misleading because it equates oil supply as the primary focus of a country's energy security considerations. As a developing country with a limited natural resource endowment China does not rely on oil alone. Instead China is one of the few economies in the world that still uses coal as one of its main sources of energy. Therefore, energy security in China is more comprehensive because it must consider the supply of coal, gas, electricity and nuclear energy along with oil imports.