Q. Can you please help me finding specific research databases to find data on the energy use of cities instead of somewhere I randomly search?

The EPA.gov (link listed below) website features a number of tools for discovering CO2 emissions of locations and facilities. 

Evirofacts (link listed below) is a useful tools that enables you to discover data by location on a range of environmental impacts. 

If you need in-depth research assistance contact me -- I am the Sustainability Studies subject librarian.  My contact information is on the Sustainability and Environmental Studies page listed below.