shows that solar generated electricity is on track to become cheaper than energy generated from dirty sources like coal.
In this article @Michael_GR
says that solar cost has become more than 100x cheaper in 35 years. For those who still doubt that solar power is about to shift into high gear and play a much bigger role, look at the graph above. It shows the price per watt, starting in 1977 at over $76/watt all the way down to $0.74/watt in 2013.
A new (March 2015) report
for National Bank of Abu Dhabi has found:
"Also solar is on track to achieve grid parity* in 80 per cent of countries within the next two years, so cost is no longer a reason not to proceed with renewables.
*grid parity - when the un-subsidized cost of alternate energy is same or better than what you can purchase from the grid. In other words, it costs the same or less to use solar/wind generated electricity as it does from dirty sources like coal, natural gas and oil.
And finally remember, once you build an alternate energy plant... the cost of fuel is practically zero. No variable oil or coal costs - sun and wind are free.