The unit used by Solar Mow is the Rival, manufactured by Ohio’s Mean Green Mowers. Buyers can choose from a 52” or 60” cutting deck, as well as a 14.5 kWh or 22 kWh battery. The Rival accelerates from 0 to its top speed of 11.5 mph in 1.3 seconds. Default options include a comfort suspension seat and a cup holder. A 200 watt solar panel doubles as a shade canopy that can add up to 20 minutes of operating time per day.
There is also S.A.M. (“Solar Assisted Mower”) An optional solar electric canopy can be added to a commercial electric Mean Green ride-on mower. Even though the higher capacity Green Lithium batteries weigh slightly more, the machine’s overall weight is actually 10% less than before using space-age construction materials. It’s a quiet, powerful, zero emission, all battery-electric commercial mower weighing less than most commercial gas mowers.
And there are others!
https://www.lawnandlandscape.com/article/ll-050516-meangreen-mower-solar/
www.pressherald.com/2022/07/05/sons-powered-solar-electric-lawn-care-business-is-cutting-edge/