Power line stops. 5mi from my lot. Can I request an extension?

There are power lines that stop about .5 miles from from property on both sides. I am buying 20 acres and plan to build cabins (there’s already a small cabin there). I have looked into solar power but it would be a huge benefit to have city power. Does anyone have experience with asking a utility provider to extend the power lines? I obviously plan to use/pay for their power, so there is some incentive for them. Any suggestions on how to start this process ?