[[File:PTC expiration vs wind installation.png|thumb]]
In the USA, a “production tax credit” (PTC) for industrial wind turbines was established in 1992<ref>https://www.wind-watch.org/documents/enrons-ken-lay-asks-for-texas-gov-bushs-help-in-securing-tax-credits-for-wind/</ref> and first applied to facilities built in 1993. It provided a tax credit to a facility for 10 years of 1.5 cents per kWh of electricity generated. Every year it
was adjusted for inflation, rising to 2. 3 cents for facilities built (or “starting construction” if they show “continuous progress” and become operational within 4 years) in 2016.<ref>http://programs.dsireusa. org/system/program/detail/734</ref>
After the initial legislation expired after 1999, the PTC was allowed to lapse for a year, as it was again after 2001 and 2003. As the wind industry lobby has noted, wind development dropped precipitously in years when the PTC was not available to help
investors avoid taxes.<ref>American Wind Energy Association. 2015. “Wind Energy and the PTC”.</ref>
In 2015, legislation ended the PTC for non-wind renewables after 2016 and established a phase-out for wind. Facilities claiming the PTC in 2017
will get 80% of the 2016 value, in 2018 60%, and in 2019 40%. After 2019, new facilities will not be able to claim the PTC .
==Investment tax credit==
The ITC for industrial wind is being phased out in the same way as the PTC.
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