The decision comes in contrast to the UK Department of Energy and Climate Change’s (DECC) proposal, which announced to eliminate the guarantee of support for large commercial solar rooftops and solar farms across England and Wales.
Scottish Energy Minister Fergus Ewing said: "The Scottish Government were not consulted on this matter prior to the consultation being published.
"I have written to the Secretary of State to express my concern about the impact of the proposal and disappointment at the UK Government’s failure to consult."
Effective for April next year, removal of the ‘grandfathering’ in the UK will be applicable for solar photovoltaic (PV) projects which have below 5MW capacity.
However, Scottish Energy Minister Fergus Ewing said that the government would retain the under grandfathering policy of Renewables Obligation, citing the need for clarity and certainty for solar projects to attract funding and reach financial close.
Solar Trade Association Scotland chairman John Forster said: "This shows that the Scottish Government is fully committed to solar providing as much as possible of its 100% renewables target for Scotland.
"Solar projects in Scotland now know what level of support they are going to get, and that they will get it for the full 20 years.
"It won’t be possible to cut support for Scottish projects down the line in, for example, year 15 of 20."
