The Old Royal Naval College located in Greenwich, London is home to the National Maritime Museum, Trinity College London and the University of Greenwich. The principle buildings are grade 1 listed and scheduled ancient monuments.

Griffiths Evans have produced a master plan energy strategy of the ORNC that contributes to their net zero carbon emissions goal for the site whilst working within the constraints of the grade 1 listing. Part of this strategy proposes the use of the river Thames as a low grade heat source for new heat pump system that replaces the existing gas boiler plant.