the architect and his client worked together to make the commerzbank tower innovatively environmentally- and climate-friendly. natural ventilation and environmentally-friendly air conditioning create a long-term contribution to climate protection. the tower has been supplied entirely with "green" electricity since the beginning of 2008 and - like all commerzbank buildings - is cleaned exclusively with biodegradable cleaning products. in 2009 the city of frankfurt awarded the commerzbank tower the "green building frankfurt" award.