When All Attempts at Sloping a Roof Deck Fails...a Solar Powered Roof Pump Does the Job???

I subscribe to a Home Inspectors Website Forum...
in today's posts was one about roof sloping and ponding water.

This picture of a solar powered battery charger roof pump caught my eye...

I guess if you can't slope the roof, when all else fails, this would at least get the water off the roof.

But maybe you'd be better off hiring a roofer who can properly slope and cricket a low slope roof deck?