Emanuel spoke Monday at the Great Lakes Symposium on the New Energy Economy. He committed Chicago to doubling its already record number of energy-efficient public buildings.
Emanuel said the city promotes technologies such as energy-efficient homes and water meters, and more efficient mass transit.
"I want everybody in your field to see Chicago as a center for new companies, new technology, collaboration between the public and private sector," said Emanuel. "So we continue to lead the effort in new companies that are looking at energy conservation-- not just alternative energy-- but energy conservation as the next fifth energy source."
The non-conservation energy sources are nuclear, coal, gas, and alternatives, such as wind and solar.