On sale, or most other methods of transfer of ownership, capital gains tax is payable on the proceeds minus cost base (excluding items treated as plant above). (en.wikipedia.org)
That will give you at least one cent per point, while most other methods yield around 0.7 cents. (rewardexpert.com)
Reducing energy consumption should be a very high priority, but people demand cheap energy and wind farms are less problematic than most other methods of generating electricity. (ramblingsdc.net)