<p><img src="https://images.cointelegraph.com/images/840_aHR0cHM6Ly9zMy5jb2ludGVsZWdyYXBoLmNvbS91cGxvYWRzLzIwMjMtMDMvNzYxYmE2YjYtMmViZS00NTk2LWE0OGYtMDYxYTc3NjEwMTc4LmpwZw==.jpg"></p><p>Tom Campbell, an Irish dairy farmer who runs a farm in County Armagh, is using excess energy from his farm to mine Bitcoin.</p>