Windfall gets marks for being a fairly polished attack on wind energy.
However, it is deeply one-sided. The primary creator protested against the wind farm from long before it was erected, stirring up anti-wind animosity. The sole technical consultant, Lisa Linowes, is a long-time anti-wind advocate with funding links to the Koch Brothers and the Heartland Institute, large supporters of anti-renewable, pro-fossil fuel propaganda. (Google the Checks and Balances Project entry on Lisa Linowes for full background not this.) No counter-balance was provided to Ms. Linowes inaccurate and biased views.
Windfall promotes and supports the health hysteria named Wind Turbine Syndrome. This syndrome, named by Dr. Nina Pierpont after a set of 23 phone interviews in a methodologically flawed and biased study, is a psychogenic illness.
A true documentary film-maker could have produced an interesting documentary on the small town, the wind farm that went in and the resulting pros and cons. However, this is not that documentary. Instead, it is an anti-wind advocacy center-piece that local anti-wind groups across the USA are airing to spread disinformation and create more opposition to wind energy.