 Because lack of modern energy infrastructure like power plants, transmission lines, underground pipelines to deliver energy resources such as natural gas, petroleum that need high or cutting edge technologies and extremely high upfront costs, which are beyond their financial and technological capacity.Although some developing countries like BRICs have reached close to the energy-related technological level of developed countries and have financial power, still most developing countries are dominated by traditional biomass.According to the International Energy Agency IEA, "use of traditional biomass will decrease in many countries, but is likely to increase in South Asia and sub-Saharan Africa alongside population growth."