Here's a cool little tech toy ...

[unixronin]

... a free-piston 100kW multifuel generator that weighs 100kg, will fit under the hood of a subcompact car¹, has no rotating parts, is 50% efficient overall², and will run on anything from biodiesel to hydrogen.  At 25kW per 125cc module, this should eat conventional small generator manufacturers for lunch.

[1]  The four-module 100kW unit is 11 inches square by 26 inches long.  You could put a single 25kW module between the rafters in your garage, or under the kitchen sink, and in terms of space usage you'd scarcely notice it was there.

[2]  Pempek claims electrical efficiencies as high as 95%.

Comments

[unixronin.livejournal.com]

From looking through the site, they have working prototypes and are progressively solving the engineering problems.