This document provides information about energy issues in New York City, including both challenges ("dark sides") and sustainable solutions ("bright sides"). It notes that while NYC is very energy efficient, the city still faces high costs, health issues, and climate change impacts from its current energy choices. The document then outlines numerous everyday actions New Yorkers can take to conserve energy, save money, improve health, and prepare for climate change impacts through sustainable transportation options, energy efficiency practices, and community initiatives. Maps highlight renewable energy sites, pollution hotspots, and restoration projects.