Okay so I don't mean to necro this but I was having a similar thought. Test generators could be a great solution to the mill lag problem. They just need to be powerful enough to justify spending real money. Either that or they could be made cheaper here or more accessible by making them purchasable in /shop. I can see how that's tough and would cut into the bottom line that keeps the server going though.. I'd be happy I'd they were buffed into space, and there's little downside in doing so frankly.
Somebody threw out 1000mw of output as a suggestion and somebody else said that was too much. Why is that too much? I could see the problem on a pvp server where souped up test gens would cause a turret//SAM nightmare. However, for the purposes of farming berries or running furnaces, if I'm gonna spend real money on a premium product, I don't wanna have to worry about power anymore. Especially if owning one means I don't need windmills , which is actually good for the server and the community.