[Yo-Yo]

Sigh. I sit here and realize that I have no concept of how much energy there is in a megajoule. I have more knowledge than most, with forty years in telecommunications electronics before retirement. And then another sigh.

One Joule is equivalent to one 3600th of a watt-hour.

So 3600 Joules is 1 watt-hour.

One Megajoule would be 278 watt-hours, or enough to light a 60 watt lightbulb for 4.6 hours.

[higgmeister]

See, not that's the thing.

How does the energy of "34 Gasoline Gallons" equate with the energy it takes "to light a 60 watt lightbulb for 4.6 hours?"

But either way, it's closer to some concept.

[higgmeister]

I think you all missed my point.   I was thinking not of numbers but of the concept of the amount of power that 4100 MJ equates with, so we could grasp what that would mean.   I think the cross reference with gallons of gas has come the closest.   34 gallons of gasoline in one great explosion would seem pretty awesome.   Even how long a light bulb would stay lit doesn't quite make an impression.