"What’s the benefit of using Solar Power? " or words to that effect.
There are many! First and foremost, solar power is so simple - when setting up a fountain, all you have to do is connect the panel to the pump, and away you go! There is no need to call in an electrician - otherwise essential, as electricity and water is a dangerous combination. Solar Power is safe for children and pets - no trailing cables, or need for circuit breakers. It also means you can site features in nooks and crannies - no need to worry where your mains supply is. And finally - of course - Solar Power is the ‘green’ option - care for your planet whilst enhancing your garden.
The short answer is , it is just simpler , all you need is a panel and a pump!