How fast the energy is provided (power, in joules/second or watts) is irrelevant, as long as not too much energy gets radiated away. What you really need to know is how much energy (in joules) is needed.
A small one 100 watts, a large one 1000 watts or more.
for a large one it is 4,000 watts and for a smaller one it is 1,000 watts
There is 1 pound in a pound.
There are one million (1,000,000) watts in a megawatt.
One kilowatt is 1000 Watts.
One lumen is equivalent to approximately 0.001496 watts.
0.001 or .001 or 1/1,000th or one one thousandth or a thousandth. A megawatt is 1,000,000 watts or one million watts. A kilowatt is 1,000 watts or one thousand watts.
There are 1000 milli-watts in one watt.
One million watts
16 onces = 1 pound there can only be one pound in one pound.
2.4705 watts/hour