There are several ways to deal with frozen water. Most people break ice or have water heaters. Of course without electricity the later is not an option without getting into expensive solar options. You can grab a heating coil and a solar panel and set up a simple water heating system but plan to spent around $250-$300 minimum. However another way to help deal with freezing water is to take plastic jugs add some water not full just a couple inches to half way, then add some salt to prevent the water inside from freezing. This weighs it down but still allows it to float. Put one in your water troughs to slow the freezing process. This works to varying degrees if it’s windy enough it’ll move around and prevent the top from freezing. If it’s still and it freezes then at the very least you can slip the jug out and there’s a hole in the ice for your livestock to drink from. My horses play with the jugs so it keeps theirs less frozen than the cows. It still works though. I will warn you that if you have dogs, like LGDs they may pull them out to play with them! So be prepared to find them missing. Lol. Remember to leave the ice in your trough to become water again later!