On November 19, 2015, FERC issued a proposed a rule to eliminate the exemption for wind power plants from reactive power obligations. Other, more conventional generators are required to provide reactive power. The proposal is in part to maintain system reliability as more and larger-sized intermittent resources are added to the grid.
Reactive power establishes and sustains electric and magnetic fields, essential to electric system voltage control. Reactive power ensures the reliable operation of our alternating current transmission system. FERC is proposing to standardize rules for all generators in the form of reactive power requirements.
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"DeCotis, Paul A. (2016, February). Market-pricing idiosyncrasies present a twenty-first century challenge. Natural Gas & Electricity 32/7, ©2016 Wiley Periodicals, Inc., a Wiley company."