I believe the future looks a lot like the Cincinnati Zoo. Recently we had a safety day for the power company I work for at the Zoo. You can't help notice all the solar canopies to park under. I hope and think you will see in the very near future new businesses taking this approach to their parking areas . The cost of overhead ,and energy to run a restaurant or business is extremely high. You could provide shelter from the sun and weather along with charging for vehicles and a reduction in your operating cost for your tenants. Developers would receive tax credits. I really think in the next 10 years you will see some huge changes with solar power. The cost is finally becoming more practical.
As a power company we are already planning and for the use of solar fields and the installing equipment needed to distribute it along with our conventional system.