i wont to know more about earth batteries sufficient to run off grid?
And how to make that system i need-at least 10KV if possible?

 

Why don't you try building an earth battery and see how much electricity you get and how long the electrodes last?

 

Welcome to AAC!
I doubt that what you are asking is possible/practical.
How much current do you need from the 10kV supply?
What is the 10kV for?
Are you aware of how lethal 10kV is?

 

Read this previous discussion.

 

Read this previous discussion.

But it's on Youtube!

 

Remember Nikola Tesla was going to collect the electrons from the earth to distribute as electricity so it has to work!

 

To collect that many electrons you need a bigger shovel!