The Brazilian government aims to provide complete electricity coverage for all citizens as a means to promote development. Between 2003 and 2009, 11 million people have benefited from the electrification program Light for All (LPT). The success of policies for electricity access cannot be measured only in terms of the number of connections. Instead, the impact of electrification on development must be determined as a way to justify resource allocation and confirm welfare improvement. Although two million people have been connected through grid extension, one million inhabitants still lack electricity access in the Amazon. The results of LPT can be considered a great achievement for a nation that has recently been considered as a developing country. However, one million people still lack electricity in the Amazon. Other challenges ahead include concerns on the economic and social sustainability of the electrification system being put in place.