The three projects will support electricity production from wind and solar this year and next. Danish aid will be granted for 20 years.
One is a 112-million-euro scheme which involves onshore and offshore wind turbines and solar installations. A second, worth 27 million euros, is for onshore wind test and demonstration projects.
The third project, with a 5-million-euro budget, is a transitional measure for onshore wind.
The European Commission said the Danish aid was in line with the bloc's state aid and environmental objectives.