From this article, it is 15 joules per gm of energy. That means 0.5kwh is generated for 100kg of these cells - typical battery weight in EVs.

But this is continuous process. So in 24hrs, you would get 12kwh which can be stored in super capacitors.

Assuming 10kms per kwh of EV range, this would be 120kms per day.

And if we allocate more kgs for battery, the range would increase.