It doesn't get much easier than installing a solar power water pump. For the Do-It-Yourself-er (DIY) this is a great project for you. Fountain pumps require DC voltage to operate and typically run during the day which is when the sun is out. You save electricity and you don't need to bury any cables in the ground from your house to the water fountain. It is also safer since you do not have to worry about grounding issues as well.
The latest thing to happen on farms is the farmers are replacing their windmills with solar panels. The benefits are big for the farmer because windmills have many moving parts that breakdown or require maintenance over time, where as the solar panels that generate electricity for the water pumps do not require any maintenance. Basically the cows need water during the day time (sun to power the panels) and is more reliable than the wind. Using one panel that might cost $600 the farmer eliminates the expensive of replacing worn out windmill parts.
Another reason solar powered pumps for ponds, waterfalls, and wells makes so much sense is there is no need for an expensive invterter to change the current from DC to AC since most pumps run on DC.
The solar panel for the fountain does not have to be right next to the waterfall, birdbath or water feature (ruin the appearance), the low voltage wire can run to remote the solar panel.
Prices for the pumps can be very cost afforable from $40 to about $150. Pumps can be highly efficient, compact and submersible.
Solar powered fountain pumps can be used at night time too. Most pump systems use a battery for continuous operation during cloudy or night time conditions.
