International. The Empire State Building has exceeded the energy savings guaranteed through its third-year energy efficiency program.
This year, it beat its energy efficiency guarantee by 15.9%, a saving of US$2.8 million. This builds on its 2011 savings of US$2.4 million – a 5% improvement on its energy efficiency guarantee and its second year's savings of US$2.3 million – exceeding its energy efficiency guarantee by almost 4%. With this, the total energy savings in the last three years was US$7.5 million.
The biggest savings are due in part to the continuous improvement of new building systems, such as the application of some of the automation capabilities of the new equipment management system and construction. In addition, hundreds of thousands of square meters of tenant spaces were built out to meet the building's high-performance environmental guidelines.
