system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: What does it mean when some countries “sell” energy to each other? Do they just link up their power grids and send some extra power to the buyer?
gpt
Yes, this is exactly what it means. Countries in Europe like states in the US have specific connection points where they can share/sell electricity. The price you pay for electricity is usually an average but the generators and distributors and sometimes even large buyers are always negotiating the price. If electricity is too cheap in your area you are willing to sell your electricity for less than the sellers in another more expensive country, then you can sell your electricity to those other countries.