For cities that want to take concrete actions on improving energy efficiency, it is essential to understand what, where, and how big the potential energy-saving opportunities are, what measures are needed to capture the savings and at what costs, what the implementation constraints are, and how...

The urban population in the developing world is expected to more than double by the middle of the twenty-first century, from 2.3 billion in 2005 to 5.3 billion in 2050. Large cities are growing very rapidly, and services are struggling to keep up. In particular, some cities have been overwhelmed...

Renewable energy, especially solar power, has been garnering a lot of interest from governments, international development organizations, civil society, and the private sector for the last few years. There has been a huge surge in the popularity of this important energy source from various...