They explained to me that the most expensive part of this installation is 12900 mirrors that can withstand long-term exposure to the open air in any weather.
Throughout the XIX-XX centuries, mankind systematically developed drug addiction from all kinds of fuels for the sake of convenience and independence from the weather (for example, this is the main reason why sailing ships disappeared), especially since it's still possible to earn good money on fuel. To give up all this - it's need to change a lot of human life and human habits.