Nine projects have been offered loans, including multi storey housing in Cambuslang, an arts centre in Ullapool and a high school on Shetland.
The projects will heat around 280 homes as well businesses, schools, swimming pools and community centres, while saving around 68,000 tonnes of carbon dioxide over 25 years.
This year's loans are part of a pilot scheme open to local authorities, housing associations, small to medium sized enterprises and energy service companies.
The scheme was designed to help address the financial barriers to district heating schemes, as borrowing commercially to fund these schemes can be extremely difficult and expensive.
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All nine of the successful projects are for small community biomass heating systems.
The news comes on the day that Mr Ewing also established the Expert Commission on the delivery of district heating. The Commission, to be made up of academics, industry leaders, local authorities and environmental groups, will work to accelerate progress towards the Scottish Government's manifesto commitment to make a major move towards district heating in Scotland.
Mr Ewing said: "This Government is committed to supporting the development of low carbon district heating networks in Scotland, helping homes and businesses stay warm with minimum impact to the environment, creating jobs while bringing heating bills down.
"We have a target of 11 per cent of heat demand coming from renewables by 2020 and district heating schemes will help Scotland achieve that target.
"But the high start up costs involved can mean schemes fail to get off the ground because commercial finance isn't available. By offering these loans, we are helping communities to help themselves, developing affordable, green and locally produced heat."
(CD)
