The Millennium Development Goals (MDGs) are eight goals with measurable targets and clear deadlines for improving the lives of the world’s deprived people. To meet these goals and eradicate poverty, leaders of 189 countries signed the historic millennium declaration at the United Nations Millennium Summit in the year 2000. However, renewable energy is reliable, abundant and will potentially be very cheap once technology and infrastructure are improved. It includes solar, wind, geothermal, hydropower and tidal energy, plus biofuels that are grown and harvested without fossil fuels. Non-renewable energy, such as coal and petroleum, require costly explorations and potentially dangerous mining and drilling, and they will become more expensive as supplies decrease and demand increases.