"Fuel" is free, inefficiency is less of a concern. Keeping them clean is maintenance. All forms of generation have maintenance requirements. What is the cost

"Fuel" is free, inefficiency is less of a concern. Keeping them clean is maintenance. All forms of generation have maintenance requirements. What is the cost of extra panels to overcome transimission losses? How does that compare to buying fuel at a more local plant? How much does keeping solar panels clean cost? How does that compare to keeping a gas turbine running?