Of late, Google has certainly committed itself to some novel and ambitious energy projects. Their PowerMeter project probably scores fairly low on the scale of ambition, but it could nonetheless be very useful. The idea is to take in data from smart electrical meters on homes and process it into a form, accessible online, that is useful for the people who live in them. It looks like it will resemble the Google Analytics system for website statistics tracking, but it will be concerned with energy usage instead. Ideally, it will be able to isolate electricity usage associated with different activities and appliances, allowing consumers to better understand how they are using power and adjust their behaviour to do so more economically and sustainably.
Particularly when paired with differing electricity prices at different times (in order to smooth out variations between times of peak demand and times of minimal demand), such a system could encourage efficiency, help to balance the grid, and reduce greenhouse gas emissions.
I certainly hope it is eventually made compatible with the smart meters Ottawa Hydro has installing. I have contacted them to ask, but am still waiting for a response.