The government's spent over £50,000 on carbon literacy training since the project started two years ago.
Environment Minister Clare Barber gave the figure in response to a question in Tynwald this week from Onchan MHK Julie Edge.
The minister says the money came from the Climate Change Transformation Project.
Mrs Barber explained why she could not predict future costs for the training:
Stop putting knives in recycling, says council
Bee Gees to release limited-edition box set
Northern Irish politician criticises Manx visa rules
Elective surgical unit opens at hospital
Piling rig on TT course tonight
10-day bus strike from next weekend
Yellow snow warning issued by forecasters
Ramsey harbour keeper completes 3,000-Mile Atlantic crossing