A fork of Factorissimo 2 focused on improving performance by implementing several 1.1 features. Can improve performance by 10X or higher. Also fixes several bugs from the original version.
Noticed this when trying to 'disconnect' old power buildings in my save.
When attempting to 'disconnect' a building that is providing power to the rest of the grid, removing a downstream power pole or deconstructing the building did not disconnect the factory surface from the main surface power grid.