This assumes that the labor is all associated with keeping the 1.3% running at that level, as opposed to being associated with the rapid growth of solar. That's

This assumes that the labor is all associated with keeping the 1.3% running at that level, as opposed to being associated with the rapid growth of solar. That's almost certainly not the case: things like sales and installation would be mostly associated with new solar (although, of course, eventually this stuff will need to be maintained and/or reinstalled).