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Urban Omnibus » East River Power

E.P.A. Expected to Regulate Carbon Dioxide and Other Heat-Trapping Gases - NYTimes.com

19.20.21.

Overwhelming Facts and amazing data-Graphics.......
-V.
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Is America Ready to Quit Coal?

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Energy Information

Data Sources

Our estimate of the impact of real-time energy feedback on carbon emissions is based on the following sources:

• Home electricity use: The U. S. Energy Information Administration estimated in 2001 that there were 107 million households in the United States using a total of 1140 terawatt-hours (TWh) per year. That gives an average of 10.6 megawatt-hours (MWh) per year per household.
• Carbon emissions from residential electricity: According to the U. S. Environmental Protection Agency, the National Average Emissions Rate for 2005 was 712 g CO₂ per kilowatt-hour (kWh).
• Electricity saved with real-time feedback: There have been several studies of feedback's effects on energy use. Sarah Darby's review of the literature, The Effectiveness of Feedback on Energy Consumption (pdf) , estimates savings between 5 and 15% from direct feedback.
• Carbon emissions from cars: Again according to the EPA, a typical car is driven 12,000 miles per year, the average fuel economy of a passenger car is 23.9 miles per gallon, and a gallon of gasoline produces 8.8 kg of CO₂.

Based on these figures, we get an average of 7.5 tonnes of CO₂ emitted per year per household, and 4.5 tonnes of CO₂ emitted per year per conventional car. So, 10% energy savings for 6 households would reduce carbon emissions by about the same amount as taking one conventional car off the road.

Google PowerMeter

Slumdog Prince....

For once, I seem to agree with the prince. Cities are our hope - for better or worse - from the environmental sustainability point of view and to further our goals to nurture, maintain and sustain local economies and their interdependence with the formal sector. To minimize the impact of urbanization, we must focus on cities to maximize our use of urban land, efficient use of existing or new resources, reduce proliferation and land-banking - to protect what otherwise would be engulfed by the cities of dispersal and urban greed.
-Viren

Dwellers go about their daily routine in the Dharavi slum in Mumbai. Photograph: Daniel Berehulak/Getty Images