
6 hotels in Washington hold Green Key certification. Each one is audited by an outside body, on a schedule it does not set itself.
APK | Own workSofitel Lafayette SquareElegant luxury hotel located on Lafayette Square, offering a blend of French style and historic charm. Features upscale guest rooms, refined dining, aIndependently certified
Wikimedia CommonsHyatt Regency Washington on Capitol HillUpscale high-rise hotel on Capitol Hill, featuring contemporary accommodations and extensive event facilities. Offers refined guest rooms, a fitness cIndependently certified
ajay_suresh | The Fairmont - Washington D.C.Fairmont Hotel Washington DCLuxury hotel in Washington DC's West End, featuring sophisticated guest rooms and professional service. Offers refined accommodations, an indoor pool,Independently certifiedGreen Key audits a hotel against roughly 100 criteria, some mandatory and some scored, covering water and energy use, waste separation, cleaning chemicals, food sourcing and staff training. A hotel applies, documents each criterion, and is then visited on site. Certification runs for one year, so a hotel keeps it only by re-submitting evidence and passing another visit. It is the largest scheme in this catalogue and the one you will meet most often across Europe.
Green Key measures management practice, not carbon. A large hotel with a pool and air conditioning can hold the certificate while using far more energy per guest than an uncertified guesthouse down the road — it is being judged on whether it manages its resources deliberately, not on the size of its footprint. The scoring is also weighted towards documentation, so a hotel with good records can outscore one that quietly does better.