Here's my take...we don't have an energy problem...we have a political problem. If folks had supported Tesla and others with that kind of knowledge, we would not be having this discussion now. We would all be enjoying the benefits of free energy.

When I listen to folks in the media talk about energy, I feel very sad and frustrated...as they debate the relative worth of trying to drill our way out of this problem, or the discussion of "exotic"  fuels like hydrogen. As long as our nation is discussing fuel-based energy, we will continue to miss the energy boat.

Since Tesla, there has been no shortage of devices or ideas that would have lead this nation (and the world) to true energy freedom, but the people in power won't have it. If you can't hang a meter on it, politicians and companies can't make a PROFIT.  And the profit motive is king...these days more than ever. Still, I remain hopeful that someday, someone will be able to break through and be able to ignite the world's imagination and quest for free energy.

If we just had one device proving the concept of free energy that folks could see and understand, they would quickly get the VISION of just what "free energy" would mean to themselves and to the world. Then the people would DEMAND this technology and they would not be able to be stopped.

But very few people understand the promise of a clean, inexhaustable energy source such as energy from the vaccum.  And, until folks understand and grasp the vision, they will continue to put faith in new "fuel" technologies that are just repeating the same worn out energy mantra.
 
For this reason, I think the best stop-gap techology to invest in is solar until the real deal arrives.  If we can improve the efficiency and reduce cost of solar tech we could begin removing ourselves from the electric (and political) grid. Decentralized power - in any form - is the future. If we could go to Home Depot and pay 2K for solar panels that would last 20 years and supply all the power for our home and charge our electric cars at  night, that would be a big step in the right direction!