Queen of the South and the cost of running floodlights

I took this picture at the Queen of the South ground in Dumfries. I was interested in how much it might cost to run the floodlights for a game. So:
1. Count the number of lights on the pylon in this corner of the ground.
2. Estimate the total number of floodlights in the ground.
3. If one light is 2kW, work out the total number of kW for the whole ground.
4. State how many hours you think the lights will be on for an evening game, giving your reasons.
5. Then calculate the total kilowatthours - the total kW x the hours.
6. If 1kWh costs 10p, how much will the floodlights cost for one game?