A case study of a retrofit of the 114th precinct in Astoria, Queens, New York City.  In 2009, the precinct’s roof became one of the City’s first cool roofs. The cool roof coating helps lower the ambient temperature of the roof, which reduces cooling loads and will help the new solar PV system perform even more efficiently in the hot summer months.  Taken together, the retrofit will save the city $44,000 per year.