The sun provides free energy for the taking. To what extent is this being used?
Solar power comes typically in the form of photovoltaic or concentrated solar. It's big business - that can help save our climate. Browse DW content on solar energy below.
Spain’s solar power was once a lucrative investment. The government lured in companies and individuals with promises of high payouts. But after the financial crisis, Spain cut these payments by 40 percent - retroactively. Now investors are fighting back.