Is that because of the economic factors, or because of political factors?
Reality factors for the most part - it's too expensive/ too dirty compared to natural gas and renewables.
EVERY time someone posts something about some new leap forward in alternative energy, when you dig into the numbers, you find government subsidies.
Some lib was just bragging on Spain.
Renewable energy in Spain - Wikipedia
"Initially Spain also positioned itself as a European leader in Solar power, by 2007-2010 the country was second only to Germany in installed capacity, however other countries (Italy in particular) have since leapfrogged Spanish development. By 2015 solar power in Spain though significant produced less than a third of that of wind power in 2015."
Looks good, huh?
Further down.
"Under previous subsidies the country expanded its renewable base rapidly and helped establish a domestic industry in both wind turbine and solar energy. However, support was drastically cut back following the global financial crisis and new installations stagnated between 2012 and 2015. The debts incurred during the boom period have led to tougher and retrospective revisions of contracts to providers of renewable energy reducing returns considerably."