Because there are a lots of lights in the stadium.
There are 720 stadium lights.
All MLB stadiums have lights, although the Cubs were the last to get lights at their stadium and the last to play a night game at home.
The Stadium of Light is a football stadium in England, home to Sunderland Football club.
Flood lights are used as they are low glaring lights !
the cubs
light bulb
in the mine, go to the door with the lights and you will see them
I think they were used as the LED lights for the opening ceremonies.
L e d s
That would be the Detroit Tigers. They were playing in Briggs/Tiger Stadium
Stadium bulbs are 750-1500W each. Use 1000W for estimate. Estimate 20 bulbs on each pole. Estimate 6 poles for a high school field. That's 120 lights times 1 kilowatt each. 120 kW. Lights on for one hour is 120 kWh (kilowatt-hours) For comparison, a house might use 1000 kWh in a month. YMMV.