Here's the state of affairs on a couple of
"revolutionary this-changes-everything" energy technologies I've been
LENR aka Cold Fusion:
We continue to have many interesting but not
commercially useful results from a growing body of experimenters.
There is still no widely accepted theory to explain LENR. The theory the
comes closest to acceptance is still Windom-Larson (high electric field melds
electron-proton pair into a neutron, which is then captured by a metal
nucleus, causing a series of Weak Force nuclear decays).
As for Rossi/Defkalion (the ones claiming commercially
viable reactors), they are still around, still making claims that never seem to
materialize. Rossi has actually gone with a "double down" strategy, making
ever more extravagant claims (higher temperatures, higher energy gains,
etc). The situation has become so ridiculous that the main
discussion site I have been using to track Rossi's progress (http://ecatnews.com/) has decided declare Rossi
a fraud, and shut down.
EEStor (the ultimate solid state electrical
energy storage device):
There was a LONG period of silence from EEStor. In
the last couple months, Zenn (the electric car company providing financing to
EEStor) forced EEStor to make some announcements, in exchange
for further financing. The result? At this point, it looks like
EEStor does NOT have something that will revolutionize the electric car and
alternative energy industries. But it looks like they do have something
that will be a notable advance in the state of the art for capacitors used
in electronic devices like computers, smartphones, etc.