http://seekingalpha.com/instablog/200555-qualitystocks/212919-dais-analytic-corp-dlyt-receives-patent-for-prototype-of-energy-storage-product-with-multiple-potential-infrastructure-applications
or maybe.....
http://www.kolibri-ag.com/en/kolibripack1.html
Can`t get prices - or availability yet though
There`s always flywheels:
http://www.scientificamerican.com/article.cfm?id=new-flywheel-design
But the idea of a very heavy lump of very dense material, with a surface speed approaching the sound barrier ( spinning >20,000 rpm) - in the same locale as my home? Don`t think so, ta very much.
or maybe.....
http://www.kolibri-ag.com/en/kolibripack1.html
Can`t get prices - or availability yet though
There`s always flywheels:
http://www.scientificamerican.com/article.cfm?id=new-flywheel-design
But the idea of a very heavy lump of very dense material, with a surface speed approaching the sound barrier ( spinning >20,000 rpm) - in the same locale as my home? Don`t think so, ta very much.