Sustainable Energy – without the hot air

Energy Forum Friday, February 17th, 2012 No Comments

Sustainable Energy – Without the Hot Air” by David JC MacKay brings a new focus to the issue of sustainable energy.  MacKay looks at the United Kingdom, and removes the enormity of the numbers involved by putting them on a personal level.  In his analysis, he presents various forms of energy consumption and production in units of personal use – kilowatthours (kWh) per person per day.

He goes on to show how much energy from various renewable sources is theoretically possible, and how much may be practically possible, in comparison to how much would be needed to replace all fossil fuels.

Over the next few weeks, we will highlight information from his book in the Statistic of the Day and Chart of the Day sections of the blog.

World greenhouse gas emissions by cause and by gas

Chart of the day Wednesday, February 22nd, 2012 No Comments

GHG sources SEwHA8

Source:  Emission Database for Global Atmospheric Research, as presented in Sustainable Energy without the hot air

Energy’s share of greenhouse gas emissions

Statistic of the Day Wednesday, February 22nd, 2012 No Comments

Worldwide, in 2000, the largest share of green house gas emissions, 74%, came from energy uses.

Source:  Emission Database for Global Atmospheric Research, as presented in Sustainable Energy without the hot air

Carbon dioxide concentrations over time from 1000 – 2000 AD

Chart of the day Tuesday, February 21st, 2012 No Comments

CO2 history SEwHA6

Source:  Sustainable Energy without the hot air