IEA Energy Access Database have hundreds of millions without access to electricity IEA Energy Access Database 1.3 billion people 40 percent International Energy Agency OECD IEA Energy Access Database 40 percent "Access to Electricity" IEA Energy Access Database IEA Energy Access Database "IEA - Energy access database" living without electricity Energy access database "Access to Electricity" outpacing electrification efforts 1.3 billion people IEA Energy Access Database IEA Energy Access Database IEA Energy Access Database IEA Energy Access Database "Access to Electricity" 40 percent 40 percent IEA Energy Access Database outpacing electrification efforts