The PEAK Coalition – composed of New York City Environmental Justice Alliance, UPROSE, The Point, New York Lawyers for the Public Interest, and Clean Energy Group – recently released a report that details the full economic and environmental costs of the city's peaker plants. The report, Dirty Energy, Big Money, found that some $4.5 billion in ratepayer money has gone to support New York City's dirty, inefficient fleet of peaker plants over the past decade. Those plants are a significant source of urban emissions, accounting for more than 10% of nitrogen oxide emissions on high-ozone days when air pollution is at its worst.