Reminding us that we are only a few breakthroughs away from a true revolution in energy production and distribution, Energy blog returns to the topic of ultracapacitors. The new product discussed appears to blur the boundaries between ultracapacitors and storage batteries. See this posting for more details. Also see this previous Energy Blog posting on supercapacitors.

The hydrogen economy becomes unnecessary if electricity itself can be stored efficiently in a medium that can charge and discharge through an indefinite number of cycles, and store electricity with almost no leakage. If a renewable energy source of electricity charges the automobiles electric storage directly, without intervening hydrogen and fuel cells, the process is more efficient and less unwieldy.