This is something I've thought about for a while. I'm interested in both historical preservation/restoration and environmental architecture/design. How can one restore and weatherize a historical building while maintaining the historical integrity and asthetic of the building? How do you make your neighbors happy with solar panels or wind mills on your 200-year Victorian home? Is it possible to maintain the original asthetic of an old building or even a whole neighborhood while going "off the grid" as much as possible? (Okay that's really 3 questions but they're all related.)

Here's the article that got me thinking:

http://www.cnn.com/2007/TECH/science/10/09/pip.wind.energy/index.html