The Nation’s Capital presents an interesting challenge. In a city whose population of nearly 650,000 soars to over 1.5 million during the work week, making the city a cleaner, greener place to live and work is tough. Washington D.C. is focused on a number of environmental, energy and public health initiatives that make efficiency an important factor. When large-scale business customers who use power 24 hours per day every day, like Marriott, are on board with efficiency, it alleviates demand and provides a host of benefits to the city, its residents, and visitors. Not to mention, Marriott reaps huge benefits as well.