The group’s CHP fleet, which has been operational for 15 years, is nearing the end of its life, Marriott said. Combined with advances in engine technology, this led to a decision to upgrade.
Each replacement unit from energy services firm Dalkia’s CHP division, Cogenco, will be individually sized, ranging from 121 kWe to 400 kWe. Cogeneration capacity across the sites will total 4.22 MWe.
Under Dalkia’s energy finance agreement Dalkia will retain ownership of the units, while Marriott will pay a service charge for engineering work, installation and commissioning, and operations management.
Marriott said the upgrades will bring it closer to its goal of reducing energy consumption by 20% by 2020.
John Conlon, head of engineering, facilities and CAPEX planning Europe at Marriott International, said, ‘It is vital to embrace those technologies that help to reduce our carbon footprint and the new CHPs will do just that. We are already planning the replacement of further CHP engines over the next two years.’