That is the intent for this engine to run a generator. Most people who have no grid tie use a fuel driven generator to top their batteries when the wind or sun can't keep up. Steam could be primary or backup for this purpose and the need for gas or diesel fuel would be gone. I've looked at Mike Brown's engines he wants twice the money and his engines are not as efficient. A 3hp 350 rpm engine will cost you 6,000 you can buy a Green Steam Engine 6hp 1,200 rpm for 2,700. Mr. Brown wants 400 for a mechanical water pump to feed the boiler, I can make one for the Green Steam Engine for 30 bucks.
I built this crude model of the Green Steam Engine to see if it is possible for the engine to preform as advertised and from what I'm seeing it will. So I will likely buy a 3 cylinder engine from Mr. Green at some point.
I went back and watched my video, if you were referring to the stem on the back of the cylinder Bob it is supposed to move like that, it's a ball joint.