We reported this week about a Japanese Company introducing flexible Electronic Curtains. We got contacted by US based Innovative Glass Corp., which, since a couple years ago, has been offering glass that can be electronically dimmed.

Innovative Glass offers two kinds of so called EGlass. SPD Smartglass is a soft blue tinted glass that gives you the ability to "tune" the amount of light and sun glare streaming through a window or skylight.
The LC Glass is a privacy product that allows you to instantly switch the glass from clear to frosted white.

All EGlass products are powered with ordinary 110 VAC power and use a small amount of current to activate them.
Innovative Glass can custom manufacture all kinds of shapes to fit your needs.
More details on the Innovative Glass site.

I would need a solution that works on top of my existing window. It is just too much trouble and cost to replace the existing window glass as it is a brand new home. So for me the electronic curtains actually are a more promising solution.