Figures showed that six of the government’s 18 larger buildings, 71 per cent of the government’s overall floor space, had received the bottom two energy performance certificate ratings. None of the buildings achieved the top ratings.
The certificate provides A to G ratings for a building, with A being the most energy efficient.
Government central offices at St Andrew’s House in Edinburgh and its Victoria Quay offices received C ratings.
Lib Dem energy spokesman Liam McArthur said: “They talk the talk on energy efficiency but aren’t doing enough to walk the walk.”
A Scottish Government spokesman said action was being taken to drive down emissions.