I did a big house for the first time recently and the inside had a large arched floor to ceiling (high) window with quite a lot of smallish panes.
With the owners consent I used wfp on the very high part, with the flow on very low.
Once the windows were wetted I scrubbed with the water turned off then just a trickle type rinse.
I spread several bath towels to protect the carpet.
With the high part done I squeegeed the lower part once the dripping had finished.
Not sure if this was quicker than using a ladder (probably not) but the idea definately worked and is well worth considering on suitable inside windows.