What's involved in connecting multiple power generation systems to the same grid? Even if they're running at the same frequency (50Hz for you fellows across the pond I think) couldn't they be out of sync and cause interference or something?,(reply>), UntouchedWagons Yes, you do have to be careful to match frequencies and phases when you connect the grids together. This is mostly an automated process today, but back then, required careful measurement and hand-tuning.