The O.S. engines that use ethanol are listed here:

http://www.os-engines.co.jp/english/...t/airindex.htm

They have the "BE" suffix on their engine designation, such as ".55 AX-BE". If you check the specs, you'll see that they have about somewhere between 50% and 90% of the power output of the regular glow engine of the same displacement, depending upon the engine. The engines and fuel are more expensive than regular glow engines and fuel.

In the U.S., there's also a problem with the fuel. The ethanol fuel comes under regulation of the Bureau of Alcohol, Tobacco, and Firearms (BATF), and there are some taxes involved because ethanol is the alcohol that is consumable by humans.

The engines are currently available only in Japan.