Memory Leaks in Java are not objects that are not freed, but dangling references to data/objects that are no longer needed (often static HashMaps that people use to implement their own caches and forget to clean up, or listeners that are still registered, even if the listening object could be discarded).

Also there are leaks in the Android WebView: http://code.google.com/p/android/issues/detail?id=9375
So using the WebView (which many apps do) causes leaks :(
(not the fault of the developer though)

But we have http://www.supersmartgrid.net/2010/03/policy-roadmap-to-2050-a-100-renewable-electricity-supply-for-europe-and-north-africa-is-possible/

To actually build the stuff?