Steve,
We'll be at our usual spot on Houx and Peter will be with us again. He usually brings a generator with him but that's just for back-up as we have always managed to plug in for electricity.
I could ask him if you could lend it for a couple of days, only thing you would need is a lock and something to attach it to. Probably much easier and cheaper than hiring a generator near Le Mans. Just let me know.
Edit: Come to think of it we even have a little generator ourselves, never use it only start the thing up once a year to see if it's still working. You can definitely use that one, makes a bit of noise though.