I have been hearing the solar power mantra since the late 1970s but it has never taken hold. Cost efficiency of solar power has improved some but I think its main utilization may be in developing countries. Why? Developing countries have less demanding needs with lesser developed energy delivery infrastructures.

If we were to look at the availability of sun to power photoelectric cells the climates of many developing nations would appear favorable solar power uses.

We just do not have consistent sunshine in a lot of temperate climates for solar power to be more than just a supplement.

You cannot transport electricity more that a few hundred miles today and currently there is no way to transport liquefied gas (LNG, LPG, Hydrogen) in pipelines long distances . However, the concentration and transmission of light with its conversion to electricity, laser (plasma power), might be possible.

We would be better to invest our money and talents in hydrogen power or the production of bio-fuels from non foodstuff renewable resources, technologies that exist today, than finding fossil fuel deposits that will only be depleted -- this is just the same oil industry bullshit that has kept us back for 50 years already ...

Efficient wind turbine farms for electric generation and hydrogen electrolysis should be better investigated for long term change -- had this been done 30 years ago we might not be in the situation we are in -- a world competing for more costly and scarcer energy resources.