There is no simple answer to this.
1. Possible? Well yes. Anything is possible. But that has to be tempered with the size of the system you need/want and the number of Kilowatt Hours you need over a 24 hr period, how much you are willing to spend, how much space you have for solar panels (roof or otherwise) and if you are expecting to operate in the winter when the amount of sun is less than in the summer.
2. Cost depends on several factors. System size of course. But, are you going to do it yourself or have someone else do it?
3. If you are looking for a "system in a box" type of set up, there are such things available. But they come at a cost. You would have to search the internet. You can find an example of such systems
HERE (I'm not recommending this site. It's only an example). Or you can hire someone to install a system for you.
If you are planning on doing it yourself, you have to educate yourself as to how to size a system in terms of Kilowatt Hours needed. Then you have to educate yourself on how to install it. If you have no electrical background, I would suggest you have someone else do it. If you are competent working on electrical systems, you can start your education on solar systems on Will Prowse's Youtube channel. It's very informative and you can learn a lot about solar panels, batteries, inverters, etc. as well as recommend sources . Check it out
HERE. Will Prowse also has a Forum you can join where you can ask questions. There also several forums on Facebook. Also you can check out the posts in this section of the Forum. Many have installed Solar systems.