It is easy to sell extra electricity back to the national grid as we are already connected to it. But how do we give this extra electricity to the buyer after creating a contract?
Great idea, but struggling to see how the logistics will work - perhaps we need permission and setup payment to the national grid to setup a channel specifically from your home to the buyer (if they will even allow it)?
in most countries, the provider for the electrical grid has already everything in place for the single user to contribute to the grid! and they buy your excess energy and use it to supplement your nearby users as they will direct your sold energy to where it is needed! its a small contract with great benefits and changes from one region to another and from country to country but almost all are on the same level of things ...