Pole material, pole length, operator height, footing, wind, panel height. The math tells you whether the pole will reach the panel under control — and when the right call is the lift, the ladder, or the rope-access subcontractor instead.
Methodology: cantilever-beam deflection on carbon, hybrid, and aluminum pole construction; IWCA pole-work envelope. Calibrated against Mid-Atlantic and Southwest residential and light-commercial route data. The math is in the methodology guide.
The math says your 25 ft hybrid pole gives 30.3 ft of effective vertical reach on a panel that sits at 22.0 ft — a ratio of 1.31× the required reach. That is the margin every published pro protocol calls for. The brush head will sit above the top of the panel by enough to drive the squeegee through the bottom of the pass with the brush still on the panel. Standard application, standard squeegee technique.
The most expensive mistake on a residential pole route is the one the operator makes at eight in the morning on a panel they have cleaned a hundred times. The pole is six inches too short for the new third-story window the homeowner added during the renovation; the operator extends past the working angle, the brush head goes off the panel, and the squeegee pass tears the new film instead of drawing it. Two redos and a stop at the shop for the longer pole, when the math at the start of the day would have caught it. The reach is not what the pole says it is. It is what the deflection lets it be.