The Washington Post’s recent article on the “The rise and fall of the U.S. wind industry, in one chart” showed the correlation between the federal wind production tax credit (PTC) and annual installations of wind. When the credit is allowed to expire, installations plummet. When it is renewed, a boom period ensues. This has resulted in an uneven, “saw-tooth” pattern of wind growth that among other things generates anxiety about the future of the market. How, might you ask, does this compare to China – where wind capacity doubled for four of the last six years? Here’s one chart:
